NoPistons -Mazda Rx7 & Rx8 Rotary Forum - Proper turbo tuning questions

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robmaiersg

02-13-2002 04:46 PM

I have a 1986 GXL with a 1987 turbo II engine dropped in it. I have a front mount intercooler about three times bigger than the stock intercooler. Straight piped through the cat and exhaust. I just rebuilt the turbo and the car onlyh has 60,000 miles.

Question: I want to raise the boost to about 10 psi. Since the engines only run at 4 psi stock will this overload the engine or can the engione handle more and still stay somewhat reliable? What will I have to do to keep the car reliable if get the car to put out over 300 hp?

ILUVMY88CABRIO

02-13-2002 05:27 PM

You're going to need more fuel going into you engine with all the extra boost. I'd recomend getting the Apexi Super AFC before you crank up your boost. Not a bad investment for $350 vs. $1000+ for an engine.

http://www.rx7.com/pics/apex-afc.jpg

13BAce

02-13-2002 06:00 PM

Quote:

Originally Posted by ILUVMY88CABRIO' date='Feb. 13 2002,18:27

Yeah, he should be ok with a SAFC, but he'll also need an FCD.

turborotor

03-01-2002 12:15 AM

The SAFC is no good if you don't have bigger injectors and high output Fuel Pump.

C

13BAce

03-01-2002 08:28 AM

Quote:

Originally Posted by turborotor' date='Mar. 01 2002,01:15

The SAFC is no good if you don't have bigger injectors and high output Fuel Pump.

C

I know it's not ideal, but for minor bolt on stuff it should be ok.

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