dynoed the tx-7 tonight. Mods are apex'i intake, downpipe, catback, and power fc. Turned out 262.0 rwhp. does that sound good for the above mods?

 

sounds about right... get a mid pipe, and dyno tune your PFC according to your mods and you should be breaking into 300 in no time

Which cat-back do you have right now, and are u running the stock maps on the PFC?

 

yeah, i'm running the stock power fc maps. I've got the apex'i N1 exhaust right now. i'm actually putting on a set of pettit pulleys and a midpipe next week.

 

Can you post a print out of the dyno run? I would love to see the torque and HP curves. I have just about the same mods as you.

Much appreciated.

 

How much boost were you running. Do the stock PFC maps keep boost at 10 psi even with those mods. I remember one of the R2's I looked at was overboosting because of the downpipe, catback, and intake, but he was on the stock computer. SO i guess my question is will the PFC keep boost at 10 psi. I get my car on thursday, and those will be my first mods. Intake, DP, Cat back, and PFC.

 

base map is set for 12 PSI.

 

Did you use a wideband while you were making the dyno runs? That number actually seems a bit low at 12psi. It seems like you should be about 20hp higher. Most likely, this is due to conservative tuning on the PFC. I made 293hp with essentially the same modifications, through the stock intercooler. FYI, IC's are rarely worth any more than 5hp on the dyno. It's on the road where they make the hp.

 

nah...ice water, alcohol, and a big fan can add around 30 hp if done properly. but if there is nothing to simulate real driving conditions, then an IC on a dyno is not worth more than a few hp like you said.

 

262 sounds a little low. It should be more around 290 like rx7tt95 said. Are you sure your second turbo was working?

 

I dyno tested the M2 medium and the CWC IC (which I own) back to back with the stock IC. I saw no real gains. The M2 made 3hp more than stock, the CWC made 4 hp more than the M2, tested in that order. Each IC was bone-cold before installing it and running the car on the dyno. The stock IC was 30K old, the CWC 3K old and the M2 was brand new out of the box, loaned by a friend for testing purposes. NO ice/alcohol was used, just a fan to keep the engine relatively cool. And that's using "relatively" in a very loose manner :-)

 

pulled 280 with

M2 air intake
Pettit Large SMIC
N-tech high flo cat
N-tech dp
Apexi N1 dual
M2 ecu
12.5 psi

 

usually, on dynos, ICs dont make a big difference since there is no 40mph+ wind blowing at it. on the street, im sure you noticed a significant difference, right??

the best way to simulate real world IC cooling is to ice it down, spray it with a water/alcohol mixture, and place a medium sized fan in front of it. that should give you a good power gain on the dyno.

 

Pulled 227 stock.

Pulled 291 with:
M2 ECU
M2 Intake
M2 Med I/C
M2 Downpipe
Racing Beat dual-tip exhaust
11.5 PSI