Mustang Dyno #'s on pump 91 & meth

[DevonsZ]

Originally Posted by WHPLASH

Number 1) nice #'s.

Number 2) Your single meth kit is fine.

Number 3) You need bigger injectors or a 2nd fuel pump.

Number 4) Your compression ratio is a time bomb for dissaster.

All in all, take care of your fuel system. You can pull to 6500+rpm and have more power. But, your compression is too high for forced induction. I see a motor rebuild in your near future. And maybe a rear end + a build tranny.

Sorry for the doom and gloom. Best of luck.

Originally Posted by WHPLASH

Meth is not your problem. Tell us more about your fuel system.

I have dual 255's in the tank, stock fuel lines/rails, and the 50lbs injectors. I dont expect my 10bolt to last much longer than the stickies going on the car, and I already have a built 4l80e in the car.

Thanks for the insight and luck.

[WHPLASH]

I'd try getting 60lb injectors or even bigger. I have 60's and am at 80% duty cycle with one pump and a MSD booster.

Sell them on the board and maybe pick up some used ones for little or no money out of pocket.

[DevonsZ]

Originally Posted by WHPLASH

I'd try getting 60lb injectors or even bigger. I have 60's and am at 80% duty cycle with one pump and a MSD booster.

Sell them on the board and maybe pick up some used ones for little or no money out of pocket.

Yeah, I was waiting to see what my dual jets do as far as flowing the meth as fuel and see how much my duty cycle goes down and try to figure out what injectors I need from there.

I'm just waiting for my catch can to come in now to install it to hopfully keep from pushing past my rear-main seal again.(which happened this last time on dyno doing the 1/4 pass)

[ls1wannabe]

Why did you only get a 5gph? You need a 14 gph not duals for 10 psi.

At this point i would seriously look into a fuel system upgrade.

[DevonsZ]

Well I know this is old but I have track times to put with the dyno #'s

I was at KCIR this past saturday the da was around 2600ft
my best pass with a little wheel spin and shifting into od was a

1.71 60ft
7.02@103.31 1/8th
10.76@132.39 1/4th

[2003cobraH/C]

nice time! did you get your fuel problem fixed. If your pushing that kind of duty cycle you will need bigger injectors. My guess is you would make lots more power up top with that ms4 with boost. It will climb real fast wayyy past 6500 with that setup. Your boost is real low for forged internals and that cr so you should be fine. my .02 is... try running a little race fuel when your hot doggin around so you put a little less stress on the bottom end make it last a lil longer. Try to change out that cam it will help the boost out a little with less overlap and make your power curve head down to the lower rpm, so you don't have to spin it like a top. but all in all good times and that trap speed screams low 10's!!! Mabe weight reduction?

[DevonsZ]

Originally Posted by 2003cobraH/C

nice time! did you get your fuel problem fixed. but all in all good times and that trap speed screams low 10's!!! Mabe weight reduction?

Thanks. My duty cycle is under 100 now with the twin 14gph jets. Yeah I may lose some weight down the road but for now she's around 3950lbs race weight.