I'm really happy with my horsepower, though i'd like to see the torque a bit higher. My car currently is running stock ports, R-tek 1.5 chipped ecu, and it hasnt been tuned yet.

The psi i was pushing was 17 pounds.

300hp is pretty much maxed out with my fuel mods. If i want to go any higher ill have to get some bigger injectors and a standalone.

Here is a list of my modifications http://www.teamfc3s.org/forum/member...ods&car_id=781



My engine bay

 

How much does your car weigh?

 

No clue really, I should take it to a truck weigh station.

 

I know your aware of it already, but I would change those 550's and 720's for a 720, 890 setup. You know, for reliability reasons.

Edit: Also, I would presume that the intercooler wasn't at it's best at the dyno. What were the temps the day of the dyno? And is this a original S4, (not rebuilt)?

 

Yea I need to go bigger injectors. Plus I need to richen my high map on the safc from 5k to 7500k. The temps that day were about mid 30's. The engine is an Atkins rebuilt s4.

 

Does that seem right?... 17psi on a stage3 bnr and only 300hp? ive seen guys run 12psi on a stock turbo and get 250... I am seriously shocked u were even able to run 17psi with only 720cc secondaries

 

My car still hasnt been tuned. I'm sure i can squeeze more hp out.

 

that IC is effn clean man

 

If you're really pushing 17psi...
And the AFR is accurate in the dyno graph...

...I'm surprised the motor is still in one piece.


-Ted

 

Wow, no kiddin'. AFR's at 14:1 @ 7000 RPM under 17 psi? Ouch in a hurry

 

I've turned down my boost and riched with the safc a bit. I'm suprised too my engine hasnt blown. I'm not to sure that those are accurate readings on the AFR's, i hope not.

 

Does the stage 3 turbo even produce any power at 17 psi? I heard that 15 is the maximum efficiency rating.

 

They offer a thrust bearing for those running more psi, but i didnt get that option :0 Well once my car is tuned i can probably hit 300 at 13 or 14 psi, maybe less, i dont know. I might even gain more hp. . .

 

well interesting setup to say the least will be interesting to see what you get as i've got about the same setup except my engine is ported and i've got a microtech.

 

Wierd...my stage 3 hits 14.5psi at 4.5k then drops to 11....maybe mines fucked.

 

Hello Smog.

If you need help getting more boost let me know. I will help you get more!

Bryan@BNR
205 640 1193

 

Damn.
I really like your car, it looked great when I saw it at the toy run.
Keep up the good work!

 

Hey wallyhojo, i want that 1.5 chipped ecu when you upgrade. I'm all stock set-up with and street port and stock turbo, stock IC and put down 230whp 224ftlb's at 9psi with a/f right at 12.0(96 supra TT fuel pump)

 

Try to get the SAE corrected HP if possible for that run. Not that it's a big deal, but it's more than likely 5 to 10 rwhp lower.

Tim

 

crank up the fuel pressure or something my friend!

 

My BNR stage 3 will hold 15psi throughout the rpm range and spools like a ****. I believe Brian told me when I got mine, the turbo will produce the most HP at 15psi and it starts to drop off after 15psi. Anyway if any of you guys have problems with the turbo get ahold of Brian he has some good tips.