so by running extra rich and im guessing timing way back you had no detonation issues?

 

Correct, the car ran flawlessly.

 

beautiful. what kind of timing did you run?

 

x2 I'd like to know also.
I have a t04e, afpr, 3" no cat exhaust, lr wastegate, and I'm soon buying 55# injectors, and a vitesse maf. I was hoping for 350 whp with this set up on 93 pump gas sounds like I might have to aim a little lower though.

 

Lart,
Very impressive Dyno chart. Even If you are running 93 oct. Your car seems to be running spot on. R U running the stock exhaust other than the SFR pieces?

Also on our top 10 HP post. Wouldn't it be cool if off to the side it had the link to the post of what each users car is running to achieve that number? And I think that we should add another list to include a top ten hp that is running only on 91 or 93 oct gas with only a 2.5L?
Just my thoughts!

 

Seems some have taken my post wrong possibly. What I mean by mix and match parts from vendors is...buy your turbo, engine management and chips from one vendor. Then say buy your exhaust from another. Not every vendor offers every part of the 944. So you must mix and match. I will have a full Vitesse Stage 3 car when done, but will have an SFR exhaust from the turbo back. I'm sure if John made all the exhaust pieces, I would buy from him...but he doesn't lol

 

I am running about 340 whp in 93 octane at 15 pai boost. What no one has mentioned is what do you want out of your motor. Max hp or max accdeleration, as they can be mutually exclusive. It all depends on how th turbo builds power. I personally like my turbo coming on about 3000 rpm which does not mean that I can match alot of max hp numbers out there but the power band is where I like it, ie when the NA portion of the engine begins running out of legs the turbo kicks in.

So really think about what the end product before you start fiddling. Also once you go down the Vitesse or Lindsey route (just buy the entire system from one of them as they match their parts very well together and they have a ton of experience putting those parts together) and you decide that you want to race you will be in the GT classes ude to the various mods.

I do not know what your budget is, but it can get pricey depending on what you want the out come to look like.

 

i think the sfr headers alone are a good contributor to the high hp number

 

Hmm...Not too sure about that one...

 

well not in themselves but i would believe they would enable other things to make more power better.

 

My best recommendation after having owned a few of the set-ups discussed, is to TRY and drive someones first, and make an educated decision how the car feels to you. If you are near Va. feel free to take mine for spirited drive (Vitesse MAF/CB, PB, V-Flex, VEBC, 83#inj, 3" FAB/SS catless, TiAL 38, PowerHaus 27/6DR, SFR IC's,etc...etc..).

Some of the stuff people say is garbage is not and some of the stuff people say is great is not.

Lean a bit more on people whose cars have had a different kit or two, they have something to compare to. But that is just my opinion.

 

Since most exhaust upgrades are only cat back, has anyone done before and after with the differences in turbo back? How much does the piping from turbo to cat area affect performace?

 

Lart is not the only one over the years on here that has run well over the "magic 15psi" on pump with no issues. Seems from reading over the years those few that have dared on pump were in the 20-23psi range and just made sure to keep safe a/f and EGT and all was well.

HEAT (pre ign) blows HG not pressure. If the heat/EGT's are safe, then the boost, with in reason, will not be an issue on pump.

I ran 18psi for years in FL in summer, etc on pump and only HG issue was on a cold day and I got boost creep higher than I realized (20psi) so my almost maxed injectors were maxed = went lean.

I have b

 

Have seen around a 5hp/5tq gain when using a 3" downpipe and test pipe...not exactly worth the big cost. The collapsing downpipe was what was making the step to an aftermarket 3" seem reasonable. Before Fabspeed started making their factory 2.5" replacement, you were stuck to going 3" or finding a good replacement.

 

so with cool enough air coming into the engine after the IC, even at higher pressure, it will be running fine?