Pontiac G8 2008-2009 - boosting the g8

a pair of precision 6062's :D goal for now is to get it done before drag week, turn it up to the limit of the stock fuck system. then later work on the fuel system and turn it up a little more. the intercooler is done, charge pipe to the engine is done. turbos are mounted where i want them under the car. now i just have to tie it all together.

http://neufamily.org/images/g8gallery/images/g8%20025.jpg

http://neufamily.org/images/g8gallery/images/g8%20037.jpg

http://neufamily.org/images/g8gallery/images/g8%20043.jpg

http://neufamily.org/images/g8gallery/images/g8%20044.jpg

http://neufamily.org/images/g8gallery/images/g8%20051.jpg

http://neufamily.org/images/g8gallery/images/g8%20053.jpg

Dude, youre a BMF'r! Ha ha!!! Lovin' it!!!

sweet jesus thats fuken badass, how much did that run ya?? what supporting mods do u have or are needed for the g8 to be tt'd?

Are you running a BAP on your current fuel system? There are people now that are running less power than what you're going to be at and already having some starvation issues.

sweet jesus thats fuken badass, how much did that run ya?? what supporting mods do u have or are needed for the g8 to be tt'd?

right now just hp tuners and an lc1. mt dr's are next.

the g8 is stout, engine, tranny and rear will hold a lot of power.

Are you running a BAP on your current fuel system? There are people now that are running less power than what you're going to be at and already having some starvation issues.

no bap. since everything else is stock and i will be running low boost i think i will be ok for now. i do have a bap laying here i could hook up but dont the injectors run out at the same time as the fuel pump?

Very nice! Love those Nova wagons.

sweet!

*tosses warrenty out the window* we don't need that :)

should be sweet!


best color

http://neufamily.org/images/g8gallery/images/g8%20067.jpg

More pics please :)

no bap. since everything else is stock and i will be running low boost i think i will be ok for now. i do have a bap laying here i could hook up but dont the injectors run out at the same time as the fuel pump?

The injectors run out before the fuel pump. At least for me on my setup they did.

Can you post pics of the turbos mounted?

Thanks.

Looking good man. I was kinda hoping you would build another turbo truck lol. But still looks great

I'm looking forward to your results!

I could be wrong but from what I have seen the stock injectors are good for about 420-440rwhp in a boosted application, the stock pump is good to 550 or so to the wheels.

I'm looking forward to your results!

I could be wrong but from what I have seen the stock injectors are good for about 420-440rwhp in a boosted application, the stock pump is good to 550 or so to the wheels.

550 on the stock pump? that would be great.

Can you post pics of the turbos mounted?

Thanks.

all the pics i have are here >> http://neufamily.org/images/g8gallery/index.htm

http://neufamily.org/images/g8gallery/images/g8%20057.jpg

Do you have to use an oil return pump?

Thanks.

Do you have to use an oil return pump?

Thanks.

no. i still need to figure that out.

no. i still need to figure that out.

I would suggest that you do run a return scavenger pump with as low as those turbos are mounted. The oil would literally have to drain uphill to even go back into the pan itself. That doesn't make for good drainage out of the CHRA.

where are you taking your oil supply from? oil Sender?

I would suggest that you do run a return scavenger pump with as low as those turbos are mounted. The oil would literally have to drain uphill to even go back into the pan itself. That doesn't make for good drainage out of the CHRA.

yes, that is the plan

where are you taking your oil supply from? oil Sender?

whatever that fitting is near the oil filter. it was made for this type of thing.

whatever that fitting is near the oil filter. it was made for this type of thing.

yea i may eventually move mine to that location, the APS kit takes the oil from the factory sender location, and then uses the scavenge pump to dump it in the oil fill spot. My oil pressure drops to 18-20 at idle when the car is warmed up and I only see about 40 at start up & wot.

yea i may eventually move mine to that location, the APS kit takes the oil from the factory sender location, and then uses the scavenge pump to dump it in the oil fill spot. My oil pressure drops to 18-20 at idle when the car is warmed up and I only see about 40 at start up & wot.

did you have any problems with the pasenger side air filter pipe fitting. the instructions show it running in the same spot as the drivers side. right between the motor mount and oil pan. it wont fit there due to the tranny lines.

i think i can get it to run up behind the motor mount but was curious what you did on your car.

Custom tranny lines, route em how you need em and be done with it.

Custom tranny lines, route em how you need em and be done with it.

yeah, i will do that if i have to. i think there is room without having to move them.

did you have any problems with the pasenger side air filter pipe fitting. the instructions show it running in the same spot as the drivers side. right between the motor mount and oil pan. it wont fit there due to the tranny lines.

i think i can get it to run up behind the motor mount but was curious what you did on your car.

sorry i cant remember but i know everything is very tight, heres a picture i doubt it will help but here it is
http://i323.photobucket.com/albums/nn453/kroche721/APS%20TT/P1000403.jpg

What are you're goals for the car

What are you're goals for the car

i want it to keep it as nice to drive as i can. maybe someday get into the 10's.

for now mid 12's or faster with no other mods than bolting the turbos on and tuning it, maybe some tires on the stock wheels.

I think it should be faster than just a 12 second car. Any updates

I think it should be faster than just a 12 second car. Any updates

i want it to keep it as nice to drive as i can. maybe someday get into the 10's.

for now mid 12's or faster with no other mods than bolting the turbos on and tuning it, maybe some tires on the stock wheels.

I think it should be faster than just a 12 second car. Any updates

i also have a TT G8, im at 7psi, and the restof my mods are in my sig. Here are my times from when i went to NED friday night for the street night, on my 18" all season.

fyi-this was my first time at the track, so you should have no problem being mid to low 12's

12.687 @ 118.3 first run ever
12.270 @ 118.3
12.503 @ 112.3
16.342 @ 87.8 last run with lots of wheel hop so i let off and i still almost beat a mustang lol
http://i323.photobucket.com/albums/nn453/kroche721/scan0001.jpg

I think it should be faster than just a 12 second car. Any updates

i am not getting this done quick enough. drag week will be here in no time.

all i got done since last week are the "down pipes". then i started looking at tieing in the wg's and they look real tight. if i could put them in backwards it would be easy on both sides but to put them int he right direction is tight.

car will be running stock 2.25" exhaust, stock cam, stock injectors and low boost. it should be quite a big quicker than mid 12's once i work thru some of that stuff. i figure injectors and cam should allow me to turn it up over 500rwhp but that is not going to happen right away.

i also have a TT G8, im at 7psi, and the restof my mods are in my sig. Here are my times from when i went to NED friday night for the street night, on my 18" all season.

fyi-this was my first time at the track, so you should have no problem being mid to low 12's

12.687 @ 118.3 first run ever
12.270 @ 118.3
12.503 @ 112.3
16.342 @ 87.8 last run with lots of wheel hop so i let off and i still almost beat a mustang lol
http://i323.photobucket.com/albums/nn453/kroche721/scan0001.jpg

nice numbers. i will be down a little from you on hp but better tires so yeah, mid to low 12's should be easy.

I thought it would be quicker than that. Good luck with it. All you're projects turn out great anyway

now this is a high performance converter swap. :D i need to hurry the hell up, drag week is coming up fast.

http://neufamily.org/images/g8gallery/images/g8%20072.jpg

http://neufamily.org/images/g8gallery/images/g8%20075.jpg

http://neufamily.org/images/g8gallery/images/g8%20078.jpg

now this is a high performance converter swap.
http://neufamily.org/images/g8gallery/images/g8%20072.jpg



new high flow cats, i have those too! :thumb:

The build looks great. I have a few questions, where did get the flange to bolt up to the stock exhaust, and have you decided on what oil return pump you will use?

Stampede.

got the flanges here. i wish they were a little thicker >> http://www.verociousmotorsports.com/Shop-by-Category/2-and-3-Bolt-Exhaust-Flanges-and-Gaskets_2/304L-Stainless-Steel-Laser-Cut-2-Bolt-Flange

yes i did order a pump. i went all out and got the expensive exa pump. http://www.turbowerx.com/Scavenge_Pumps/Exa-Pump/Exa-Pump.html?gclid=CJvs57LQoZwCFRBM5QodsiR7fQ

Thank you for your input. Where did you get the ball and socket flange? Also when you have the cold side done can or will you post pics?

Stampede.

i will keep taking pics.

i got the ball off of an old set of cats. not sure where to buy new ones. the ball is only 2.25" so it will be a place to upgrade along with the entire exhaust system someday.

Parish you are my hero. lol This is awesome. I can't wait to see what this thing can do. When is the dyno day?

Anyup dates?

Thanks.

Anyup dates?

Thanks.

i got the other turbo/wg set up done and bolted on. both turbos are permanently installed on the car. i had to clock them a little and clock one of the wg's. i fired it up for a sec to check for exhaust leaks and found none.

thats it:(. not enough time in the day. i should have 100% of what i need to finish it once i have time.

:drool:

finally an easy project. did one of the charge pipes and it only took an hour or two :mrgreen: one more charge pipe, 2 air intake pipes and then oil stuff. wont be too long now.

http://neufamily.org/images/g8gallery/images/g8%20086.jpg

http://neufamily.org/images/g8gallery/images/g8%20087.jpg

http://neufamily.org/images/g8gallery/images/g8%20089.jpg

http://neufamily.org/images/g8gallery/images/g8%20085.jpg

bad ass for sure. You are going to have to have a pump to get the oil to the pan. the wife wants to trade her car in, I think I have her hooked on the g8 gt, i'm just not looking for the up in the payment :cry:

yep, going to have to use a pump.

What size is your charge pipes?

Thanks.

What size is your charge pipes?

Thanks.

2" for the 2 charge pipes. 3" up.

You were talking about a converter parish? What size and what tires you going to use, what day you racing?

parish8: Where are getting your tubing from, and what is the price roughly?

Thanks.

http://www.verociousmotorsports.com/

they have the nicest bends i have seen. some bends loose their shape when you cut them but not theirs. you can cut and clock a bend and it is perfectly round mid bend.

expensive. a 3" is $25

i wont be geting a converter anytime soon but when i do it will probably be a Circle D. i like the one in our wagon. if i am ready i might be going to mam next friday.

Let me know!!! I heard you were out with the Nova last night.

Let me know!!! I heard you were out with the Nova last night.

wagon has some issues but it is getting faster. ran 6.40 last night and i am sure it has another .2 in the 60'

this parish guy is slow....

this parish guy is slow....

the g8 MIGHT run today:D

dyno tom told me when we get it runing call him up and we will get it on the dyno. "i dont care if it is 2am sunday night":D

the g8 MIGHT run today:D

dyno tom told me when we get it runing call him up and we will get it on the dyno. "i dont care if it is 2am sunday night":D

Sweeeeeeet. I still cant believe how fast you put that damn thing together. Shall we have some fun one night later this week? The g8 might want a rematch.

I'm flying back monday and installing the new trans and restalled converter(3800) tuesday. I have to run around monday and find a shop to swap the bellhousing and then its ready to go.

How much are you thinking its going to do? What are they capped out at fuel wise? I need to get my broke ass back on the dyno, doubt it happens before we leave.

car should be ready to make some runs next weekend. i need to get some tires on it.

on a dynojet the car is around 300rwhp stock. from what i understand i will be around 400-425rwhp(dynojet). not a giant gain.

then add injectors and a little more boost. then add a cam, then fuel pump. then upgrade my 2.25" exhaust.... should be 600rwhp before long.

Damn, idk if i'll be able to come watch, unless you do it Friday night...

car should be ready to make some runs next weekend. i need to get some tires on it.

on a dynojet the car is around 300rwhp stock. from what i understand i will be around 400-425rwhp(dynojet). not a giant gain.

then add injectors and a little more boost. then add a cam, then fuel pump. then upgrade my 2.25" exhaust.... should be 600rwhp before long.
Imagine that, same parts I need minus the exhaust lol

http://neufamily.org/images/g8filespics/g8burnout.wmv

we had a little fun today. my hp tuners box took a crap so no tuning but we did make a couple of runs on the dyno just to see if it was safe to beat on the car.

stock should be in the 270-280rwhp range on a mustang dyno.

with a peek of 5psi it got 347hp/375tq

bumped it to 7psi and got to 375hp/400tq

both of those numbers were with very low timing. anywhere from 8deg down to 2deg so there should be a lot more power properly tuned. also the a/f ratio was low 11's and even into the high 10's so more power there too.

after we saw that it wasn't likely to blow up we went out on the street and ran it thru the gears. it seemed to like normal drive the best but was still shifting too high. power is falling off pretty hard up top. a combo of dropping boost up top and maybe the tiny exhaust? we were only at the 347hp setting when we went out for a spin.

seems like 400+rwhp should be easy with 7psi and tuning. i hope to get some mt's on there and get it tuned before next friday and then hit up the 1/8th.

car is VERY quiet. dyno tom said it was the quietest 375hp he has every heard :lol:

Lets get some finished install pictures, damn :jest:

Lets get some finished install pictures, damn :jest:

we were in a mad dash to get it running so we could go for a spin. that and i have no lift so taking pics under the car always look like shit. cant get a good angle.

i have to get the car back up in the air to address some clearance issues. i will get some more pics then. pics of the scavenge pump. stuff like that. we put that right in the front wheel well. there is a pretty large empty spot near the drivers feet.

car is VERY quiet. dyno tom said it was the quietest 375hp he has every heard :lol:

we have a pretty good sleeper, nobody expects a white sedan to beat there ass

went out for a gtech run. stock showed 13.49. at the 5psi/347hp setting i now see 12.80.

thats a decent start. now add a proper tune, boost and tires.

i have to say it feels slow as fuck. needs at least another 200hp. with the tune and 7psi it should be over 400rwhp(mustang). maybe that will start feeling quick.

i am communicating with hp tuners to find out what is up with my box. they do respond pretty quick but i wish they had a phone number and live tech help. i might end up paying for another slot on someone elses cable just so i can get tuning on it. 2-8deg of timing has to be killing me.

woohoo. car is running strong. it actually puts you back in the seat now. front end comes up a shit ton and i am still at 5psi on the street.

after about 15 runs at c&s dynoshop tom got it dialed in pretty good. the thing seems to hate timing at peek tq. tom thinks it could be my restrictive exhaust or tiny cam. timing ended up around 11deg at peek tq and 15deg at the top. anymore and it would show knock. car was tuned with hptuners and a lc1.

5psi was 375rwhp.

7.2psi was 419rwhp :shock:

mustang dyno, 3rd gear pulls(forgot 4th gives better numbers on these 6speed autos), no lock up.

on that 7.2psi run the injectors were maxed and the a/f ratio was headed up. this was in an 80deg shop. no way i car run that boost level on the street without larger injectors. maybe 6psi but only if i am watching the scan tool and it isn't too cool out.

i think the ~7psi will be fine with some injectors.... damn, more money i might have to spend before drag week :bandhead: :lol: . those numbers seem decent to me considering stock cam and stock 2.25" exhaust with 5 mufflers.

i have some dyno video but dont plan on messing with it till after we go to the track tomorrow.

I wanna see a 12.0 or better. :) I will settle for nothing less! We need more video!

I wanna see a 12.0 or better. :) I will settle for nothing less! We need more video!

i could see lower 12's but 400hp isn't all that much in a 4000lb car. might need another mod or two before it gets into the 11's.

Yeah I figured. But I've seen some people's mod lists and they are running 12.5's. Shouldn't be much more than 400hp cuz they are uncammed. I'm hoping the car surprises you the first time out. Get a cam in that thing and you should be putting down some serious power. I've seen cars with cam, header, and a tune run around 420hp. You should come out to KRP Saturday. I'd love to see that thing.

Can you post some more pics of the finished project?

Thanks.

Can you post some more pics of the finished project?

Thanks.

i need to get it on a lift so i can get some pics. i tried taking pics with the car on stands and they dont show much.

good luck at the track, i think mid to low 12's

car didn't run so well tonight. best run was 8.26 at 87 with a 2.03 60' (12.8's?)

5psi, 91octane fuel from bp, 11.5deg of timing at peek tq, 15deg at 6000rpm. a/f ratio in the mid to lower 11's.

no matter what we tried we still got knock retard. ran the fuel from high 10's up to low 12's. definately got more knock retard while in the low 12's. thought it might be heat soak from sitting in the staging lanes so we let it cool off a little and that didn't help.

last thing we did was put the timing to a flat 10deg up top and make a run. no knock. at least we are learning something. it appears to be real knock that the sensors are seeing.

question is... should we be able to run 5psi with 11.5-15deg of timing on 91 octane?

thinking a meth kit should be next, then a converter.

car didn't run so well tonight. best run was 8.26 at 107 with a 2.03 60' (12.8's?)

5psi, 91octane fuel from bp, 11.5deg of timing at peek tq, 15deg at 6000rpm. a/f ratio in the mid to lower 11's.

no matter what we tried we still got knock retard. ran the fuel from high 10's up to low 12's. definately got more knock retard while in the low 12's. thought it might be heat soak from sitting in the staging lanes so we let it cool off a little and that didn't help.

last thing we did was put the timing to a flat 10deg up top and make a run. no knock. at least we are learning something. it appears to be real knock that the sensors are seeing.

question is... should we be able to run 5psi with 11.5-15deg of timing on 91 octane?

thinking a meth kit should be next, then a converter.

107 in the 1/8? is moving pretty well

woops. not sure where i got that from. 87mph

got some dyno video nothing crazy(yet) >> http://neufamily.org/images/g8filespics/g8dyno.wmv

sounds like it needs some small things to get it going to where it should..
u are at a 12.8 now now im sure i did 8.4 last time out in the 1/8..

mine would get knocke around peak tq until i did the 160* and made it 12.5 AFr...

Do you think the knock might be from the DOD lifters?

Do you think the knock might be from the DOD lifters?

like i said above when we pulled timing back to 10deg and all knock retard went away it makes me think the knock is real.

not really sure about anything and am open to ideas.

i am 99% sure the car is going to get a meth injection set up. should help with lots of things. i didn't want to spend any more money right now but as it sits it just isn't quick enough.

got some newer pics up. http://neufamily.org/images/g8gallery/

also a new dyno numbers and track times after the AIS meth kit.

http://neufamily.org/images/g8filespics/477hp779et.wmv << thats a big file. for those of you that would rather read about the results i will type them up.

best numbers before the meth were 419rwhp/411tq on a mustang dyno. we were fighting knock. injectors were 100% a/f ratio was climbing fast. a safer 5psi gave us 375rwhp but even with it tuned with plenty of fuel and low timing we were still fighting knock at the track.

after the meth we got it turned up to almost 10psi, 16deg of timing, no knock at all, a/f ratio in the lower 11's, injectors at 80%. the meth kit was an AIS system with the trunk mounted tank and progressive controler. 2 14gph nozzles and pump running full blast by 8psi.

new numbers... 477rwhp/504rwtq. this is on a mustang dyno.

at the track i had to work the shift points a ton. shifting at 5600, any sooner and it falls off hard. i suspect valve springs. 1-2 shift is now commander at 5100 to get it to shift at 5600.

best et was 7.79@95 with a lowly 1.99 60'. running at 9psi. there is more in it as it sits.

these numbers are with the stock 5 muffler exhaust, stock dod cam, stock converter, stock injectors.

complete list of mods are. hp tuners with 2 bar os, lc1, twin 60mm turbos, 265/40/18 dr's on stock rims, AIS meth kit.

nice improvment

Get some good springs and cam in there and you will be flying.

Are those recent snow pics?

nope, thats back when i got the car.

Parish, it looks like the nozzles are located directly across from eachother on the nipple? (90 & 270 degrees) Is it ideal to have them like that and not seperated from eachother?


http://i323.photobucket.com/albums/nn453/kroche721/nozzle.jpg

Parish.. Are those the new Billet Precison units? If so, you aren't anywhere near the peak efficiency range for those things. It needs more boost! ;)

Travis

Parish, it looks like the nozzles are located directly across from eachother on the nipple? (90 & 270 degrees) Is it ideal to have them like that and not seperated from eachother?

hell if i know. seems to be working well.:burn:

Parish.. Are those the new Billet Precison units? If so, you aren't anywhere near the peak efficiency range for those things. It needs more boost! ;)

Travis

yes they are. it has a little room to grow;)

http://neufamily.org/images/g8gallery/images/g8%20043.jpg

we are on drag week with the 67 wagon we built and the g8. g8 is doing well.

11.95@122 on sunday 9psi
11.90@122 on monday 9psi
11.87@122 on tuesday 10psi
11.44@124.5 on wedsday 10.5psi
11.87@122 on thursday 9psi

wedsday was at summit track. that place kicks ass. it was also perfect weather and i did the syty shuffle to help with the 60'. still only a 1.92 on that day so there is another easy .2 right there.

still stock cam, converter, 5 muffler exhaust. thinking exhaust, valve springs, a 3rd meth nozzle and then a little more boost will be the next mods.

nice!, do you have a link to the meth kit you used?

AIS trunk mounted progressive kit with 2 14gph nozzles running full blast.

What is the SYTY Shuffle?

Thanks.

What is the SYTY Shuffle?

Thanks.

pull up to the line and stage(both lights). put it in neutral. push the brakes hard. give the engine a good rev. brake pedal will sink farthur and you end up with more brake force than normal.

put it back in gear, then floor it while holding the brakes, wait till there is some boost and then let it go.