Just got my car back recently from an engine rebuild, my current mods include:

3inch Cat-back -Hks

3inch straight pipe -Perrin

3inch downpipe - Apexi

3inch 02 turbo outlet -Authority

10.5 cm hotside -Buschur

Suction Intake -HKS

2.5inch Buschur lower and upper intercooler pipes with mini battery kit

AMS front mount IC

AMS Intake Manifold

Cosworth CNC ported race head

272 I/E Camshafts - HKS

Cam gears -HKS

Ross Pistons

Crower Rods

Supertech Valve Springs

HKS Ignition

Spark plugs and wires

GReddy e-01 BC

255 Walbro Fuel pump

780CC injectors

AEM EMS

STOCK Turbo and Exhaust Manifold

ACT clutch

336WHP/330torque

EDIT**** Sorry for not being more detailed I wanted to see what people would say about my dyno numbers. The car is an 04. It was tuned at CFT in Orlando, Florida which is a mustang dyno but theres been a long debate on the CFT dyno on these forums before about how the numbers read. and yes trust me, I was very dissapointed in those dyno numbers. I plan on finding an Evo AEM EMS specialist either in florida or have someone fly down possibly. I do plan on upgrading the turbo by the way, probaly a gt37r but thats another topic.

 

cosworth head huh? That was a pricey piece. Out of curiosity, why on earth did you put HKS cams in? All those great parts, should've gotten Jun, Tomei, even the Revolver cams.

You dont use the AEM to control your boost? It can and does a good job at it. Not too bad overall though. What is your injector duty cycle at? My build up is going to be very similar to yours.

 

What type of Dyno, what boost, what car (assuming 03-04 VIII)? Kinda pointless without more data.

Or Cosworth cams even maybe...

 

The intake mainfold is whats holding you back from getting more power out the car. Ill show you my dyno number once i get my car in the shop for the final tune in the first week of may. With a safe brake in tune i got 320whp and 312tq and thats only so i can drive the car around till i get the full brake in. Oh yea that on the 9.8 hotside with shell 93oct.

 

Am I missing something or are those numbers lower that what should be expected for the mods list? (just a question, not an insult)

Sure have a great list of parts there! Whats next?

 

Intake manifold? How would that hold you back at only 336whp? Maybe I am missing something but unless he wants a stock turbo record, I am pretty sure a stock IM isnt a restriction at these levels.

 

could just be the dyno. It would be great if he had a stock dyno run for comparison. Thats what is really needed, a baseline.

 

I'm sorry but those numers are way to low, even for a mustang or Dynapac dyno.

Unless your only running like 19psi

 

From that list: AMS Intake Manifold

 

The AMS intake mani is on the list...

My question, in addition to the HKS cam question... is why did you remove the Cosworth springs and put in supertech spings?

 

there is way to much air going in the motor. the stock turbo cant process all that air into enough load to lay the power down to the wheels

 

higher rpm

 

The Cosworth springs are rated to 10k RPMs and are matched to the head!!! Oh, lets spin to 11k RPMS on a turbo that runs out of breath at 7k, WOOHOOO!!!!

 

unless....the cosworth head was purchased used.....I didnt even catch that one. What are they priced at....around 3500 right?

 

Used? They just went onto the market within a few months ago. Yeah, it's possible but I doubt it. And I still don't know why someone would sell the head used without valve springs....

3800 actually...