Pontiac GTO 2004-2006 - FAST intake over a stock LS2 intake

I think it's time to see what will really happen when I put a FAST 90mm intake on to replace the stock LS2 intake. :devil: I have dyno records of each change I have made to my 05 GTO and all five graphs are posted on the "Interesting information" thread by Nickn20. I have a cam that is set up for a blower and the ls2 has ls6 heads. I have JBA shorty headers and a K&N cai now with a tune. I also removed the stock rear mufflers and went with magnaflow resonators. The car sounds really good and I hope to make some gains on the top end with the FAST intake.

I'll keep everyone posted on the results. Be watchin'. :drive:

Awsome, I can't wait to see the results. :)

Well it ought to yield you a few more horses...get those heads P&P'd and it'll be alot more effective...or get the blower I'm assuming that cam is waiting for.

I'd like to get a hold of a fast intake and TB, but I'm kinda tapped in the $ department right now.

I just ordered the Dynatech long tubes for the 05 GTO to go along with the intake. I hope to make around 29 rwhp with the headers alone as I am removing the cats then I am going to get some high flowing heads later. I'm shooting for 420 plus rwhp and then the heads and then the ATI procharger goes on. If I had the $$$ now, I would have done the heads too and would see around 480 rwhp before the blower. I will know by next weekend what the LT's and the FAST 90 do for #'s for you all to see. :drive:

The Duke

P.S. I have a pair of the JBA titanium shorty's that I am taking off the car. Anyone interested in buying them for a good price? Make me an offer.

what about your intake? did you get rid of it?

Nope...I still have the intake. You want it?

I am wanting to see the dyno results.... I am debating over putting an LS2, LS6 or Fast intake on my 408 I'm getting.

Bump!! Whats happening with the intake swap?

unless you are planning on putting in H/C or 402 its kind of a waste of money to put Fast intake on a stock motor. Check out this thread
http://www.ls1gto.com/forums/showthread.php?t=33232&highlight=FAST+intake+LS2

any updates?

unless you are planning on putting in H/C or 402 its kind of a waste of money to put Fast intake on a stock motor. Check out this thread
http://www.ls1gto.com/forums/showthread.php?t=33232&highlight=FAST+intake+LS2


http://www.ls1gto.com/forums/showthread.php?t=49271 Heads/Cam LS2 = Nice gains with FAST intake. Granted not everyone is going to swap in heads or a big cam but at least we know the few who are will show noticeable power gains.

His mods are: Kooks 1 3/4, stock catback (w/x-pipe), HPE S-Cam, ET Performance LS6 stage 2 heads, very conservative HPE tune (not dyno tune) FAST intake (home ported).

I'd say with a better cat-back and a better tune the car would pick up considerably more. The stock 05 cat-back is a known restriction where it crimps down to about half the pipe diameter near the differential.

Yeah, we're just awaiting the new USB cable to tune up his 2005.

The results are in!!! I went from 379 rwhp and 366rwtq to 412rwhp and 407rwtq sae corrected on the dyno. Actual was 425rwhp and 419rwtq. That's a gain of 33hp and 41 rwtq. I put on Dynatech LT's also. The next step is a nice set of ET 225cc heads!

Peace y'all

The Duke

Fast is a good upgrade but, I dont think it would make that much of a diff. for the amount of money you pay for it.

Fast is a good upgrade but, I dont think it would make that much of a diff. for the amount of money you pay for it.

It's an item to do after you've already done the head/cam/header route.

The results are in!!! I went from 379 rwhp and 366rwtq to 412rwhp and 407rwtq sae corrected on the dyno. Actual was 425rwhp and 419rwtq. That's a gain of 33hp and 41 rwtq. I put on Dynatech LT's also. The next step is a nice set of ET 225cc heads!

Peace y'all

The Duke

So you gained 33hp from switching to a FAST intake AND LT's?? That's not really a good comparison considering you put on LT's as well.

All my gains weren't from the LT's. Split the difference and I say that's about a 15hp gain and 20 tq.

The Duke

I am wanting to see the dyno results.... I am debating over putting an LS2, LS6 or Fast intake on my 408 I'm getting.

You're going to need a good intake like the FAST 90mm over a LS2 or LS6 with a 408, even more so than a 5.7 or 6.0 liter.

You're going to need a good intake like the FAST 90mm over a LS2 or LS6 with a 408, even more so than a 5.7 or 6.0 liter.

That's what I'm thinking but for 800 bucks I wanted to make damn sure first. :D

That's what I'm thinking but for 800 bucks I wanted to make damn sure first. :D

I guess you didn't read this thread.

http://www.ls1gto.com/forums/showthread.php?t=49271

I gained 18 rwhp and 14 rwtq, not to mention the much wider power band, in fact, in some places I was 20 more rwhp with this intake setup.

I swapped from the LS6 to the LSX and there was no gain in HP across the entire RPM band from 1000 rpm to 6500 rpm

Any drop in boost from that swap?

so on a stock engine, going from LS2 to LSX 90mm won't net you any HP?

so on a stock engine, going from LS2 to LSX 90mm won't net you any HP?

I might be crazy, but it'd be awfull hard to make a cable throttle body work on a drive by wire car. :engarde:

I might be crazy, but it'd be awfull hard to make a cable throttle body work on a drive by wire car. :engarde:

I'm pretty sure you can get a 90mm DBW throttle body...doesn't the LS2 GTO come with one standard?

I'm pretty sure you can get a 90mm DBW throttle body...doesn't the LS2 GTO come with one standard?

Yes, which is why I was confused one would want to use an aftermarket unit on the Fast 90 intake on an LS2 anyhow?

well the truth of the matter is we still do not have a intake only swap from an LS2 to the fast! The other guy who showed the nice gains was low on HP for a H/C car before the intake swap.. just calling it like I see it!

well the truth of the matter is we still do not have a intake only swap from an LS2 to the fast! The other guy who showed the nice gains was low on HP for a H/C car before the intake swap.. just calling it like I see it!

I agree... Someone should go ahead and send me a free FAST 90 intake and the LS2 'bolt-on' kit and i'll do some stock to stock before and after dyno's and end this debate for good. :judge:

You'll find the IRS 2004-2006 GTO will show lower rwhp and rwtq numbers than F-bodies.

Why dont you send your ls2 intake to be ported by lt1dave. Their ported ls2 and a ported FAST 90mm were within 5hp peak and pretty much identical curves. Plus it only costs like 150 bucks to have it ported.

Nate

You'll find the IRS 2004-2006 GTO will show lower rwhp and rwtq numbers than F-bodies.

what does that mean?

what does that mean?
GTO's will dyno lower than an f body with similar mods because the IRS of the GTO takes more horse power to turn than the solid axle of the f body.

What planet are you guy operating on? Basic LS1 F-body stock cars typically post about 334 RWHP, Corvette numbers are rated at the flywheel. LS2 numbers are approximately (there are no absolutes in this universe) 400 HP and 400 Torque. Flywheel or Rear Wheels? SAE certified testing methodology? anybody? research it. Anybody that is telling you that their bolt on product is going to beat GM numbers with cats, factory exhaust manifolds and intake in place all meeting emmission standards should have to prove their claims before they get my money.

The fast throttle body is supposed to be a direct bolt on cable operated replacement for the OEM fly-by-wire 90 MM throttle body that has the IAC and TPS integrated. I have a FAST 90 MM on a 2006 Vette LS2 V8 it has problems the throttle plate is a poor fit in the CNC bore. In short it sucks.
UMI makes a much better product for significantly less cost, most important it works. I noticed Arizona Speed & Marine uses them too.

I have two FAST throttle bodies on the shelf, none are going on any more of my motors we are working with the fly-by-wire TB even in stand alone engine conversions.

Hope this helps!

What planet are you guy operating on? Basic LS1 F-body stock cars typically post about 334 RWHP, Corvette numbers are rated at the flywheel. LS2 numbers are approximately (there are no absolutes in this universe) 400 HP and 400 Torque. Flywheel or Rear Wheels? SAE certified testing methodology? anybody? research it.

Correction- your average LS1 f body will dyno ~300 rwhp (+/- 10 rwhp). LS2's are putting down roughly 350 rwhp.

Anybody that is telling you that their bolt on product is going to beat GM numbers with cats, factory exhaust manifolds and intake in place all meeting emmission standards should have to prove their claims before they get my money.

And what is that directed to? I'm not sure what you're trying to get at here.

GTO's will dyno lower than an f body with similar mods because the IRS of the GTO takes more horse power to turn than the solid axle of the f body.

Well...in theory.

Our LS1's (2004 GTO's) tend to run a bit stronger than the f-body's LS1...don't forget ours come with LS6 block, LS6 intake manifold, different cam, LS2 timing chain, LS6 oil pump, etc.

A stock 2004 GTO will dyno in the 290-310 range. Simple tune will yield 10-20 more ponies.

I had a 2000 vette and this motor (when it was stock) felt alot stronger than my vette did.

Why dont you send your ls2 intake to be ported by lt1dave. Their ported ls2 and a ported FAST 90mm were within 5hp peak and pretty much identical curves. Plus it only costs like 150 bucks to have it ported.

Nate

If this is true then the LS2 intake has earned a litlle bit of a bad rap for no reason...hmmmmmmmm

Well...in theory.

Our LS1's (2004 GTO's) tend to run a bit stronger than the f-body's LS1...don't forget ours come with LS6 block, LS6 intake manifold, different cam, LS2 timing chain, LS6 oil pump, etc.

A stock 2004 GTO will dyno in the 290-310 range. Simple tune will yield 10-20 more ponies.

I had a 2000 vette and this motor (when it was stock) felt alot stronger than my vette did.


The '04 GTO LS1 is the same as evey other LS1 made from 2001 on.

Well...in theory.

Our LS1's (2004 GTO's) tend to run a bit stronger than the f-body's LS1...don't forget ours come with LS6 block, LS6 intake manifold, different cam, LS2 timing chain, LS6 oil pump, etc.

A stock 2004 GTO will dyno in the 290-310 range. Simple tune will yield 10-20 more ponies.

I had a 2000 vette and this motor (when it was stock) felt alot stronger than my vette did.

The LS6 block is just stronger, it gives no more HP, the LS6 intake is the same intake that came on ANY 2001 LS1 and later, the different cam might give it a little more tourque on the bottom end because the GTO weighs more but gives it no more HP, the LS2 timing chain is just for durability it gives no more HP, and the LS6 oil pump is for reliability as well, again yeilding no more HP.

Just about any stock 2000 and later LS1 will dyno in that exact same range. :)

The LS6 block is just stronger, it gives no more HP, the LS6 intake is the same intake that came on ANY 2001 LS1 and later, the different cam might give it a little more tourque on the bottom end because the GTO weighs more but gives it no more HP, the LS2 timing chain is just for durability it gives no more HP, and the LS6 oil pump is for reliability as well, again yeilding no more HP.

Just about any stock 2000 and later LS1 will dyno in that exact same range. :)

MY 2002 Firehawk dynoed about the same as any stock WS6 Trans-AM or SS Camaro did. Even though GM claimed it was 345HP. At the real wheels it wasn't alot stronger than a WS6 car.

Nick at Newteck Performance showed that the LS2 intske was showing vaccuum wide open....the FAST 90 intake solved that problem. The Fast intake shows improved low end torque and better upper end horse power gains as well. The throttle response is much improved also. Right now I can be rolling allong at 25mph in first....mash it and instantly spin my tires like you would when you pull the trigger on a drill and let off and they stop as quick. AND that's with traction control "on" and it wasn't turned off in the tune.

Bottom line....get the Fast intake over the stock LS2 and you won't be dissappointed!!

The Duke :cool:

I can roast first from a roll with my car bone stock. Heck, I can even get 2nd to spin from a roll at the right speed. I would say looking at the LS2 intakes, it wasnt the best design and clearly for people with heads/cam/headers/etc, it'd be a very worth while step in the right direction. Stock vs Stock + FAST might be worth it, but at the cost of the intake i'd get headers or something else that will provide more umph first.

Nick at Newteck Performance showed that the LS2 intske was showing vaccuum wide open....the FAST 90 intake solved that problem. The Fast intake shows improved low end torque and better upper end horse power gains as well.

The Duke :cool:

So your saying your gains are equal to a CAI with with FAST.
@ $800 dollars. Iam not seeing the FAST as a deal over a ported LS2 for
$150. Now is anyone stating that A ported LS2 is not equal to a FAST.
That's what I want to know?

So your saying your gains are equal to a CAI with with FAST.
@ $800 dollars. Iam not seeing the FAST as a deal over a ported LS2 for
$150. Now is anyone stating that A ported LS2 is not equal to a FAST.
That's what I want to know?

You don't have access to the interior of the LS2 intake and the ports don't have any material to allow porting. It would be a waste IMO.

I don't know of any CAI (with back to back dyno runs) that equals the gains from the FAST. My 20 rwhp was FAST only. Stock TB. An LS2 intake will not get you there.

When you mod, you have to determine your goal and then put together the right parts that will work together to achieve the goal. Just putting parts on the car will not give you the best results.

The FAST is a necessary upgrade for those who want to maximize their NA Horsepower.

If you think it's too much money, don't get one. Others of us see it as part of the package.

You don't have access to the interior of the LS2 intake and the ports don't have any material to allow porting. It would be a waste IMO.

I don't know of any CAI (with back to back dyno runs) that equals the gains from the FAST. My 20 rwhp was FAST only. Stock TB. An LS2 intake will not get you there.

Why dont you send your ls2 intake to be ported by lt1dave. Their ported ls2 and a ported FAST 90mm were within 5hp peak and pretty much identical curves. Plus it only costs like 150 bucks to have it ported.

Nate

So who is right???????????????

A stock ported LS2 intake is not built the same....at all! No comparison. The runners are not as big,tall wide...totally different. $800 or $900 is a small price over all to get the performance I have now with the FAST and LT's. My goal is maximum performance before the blower so the last things I need is the under pulley and to have some ET 225cc heads...then an ATI procharger. The FAST and Dynatechs speak for themselves in performance gains...379rwhp and 360rwtq to a whopping 425rwhp and 419rwtq! Go to my web site....putfile.com/dukedoom and check the pics and vids and then tell me what you think.