Drakk0r

Does the N/A ECU have a fuel cut like the TII if you go over 8.9psi manifold pressure? Just wondering, cause I dont wanna find out the hard way when I finish my little turbo project. Fuel cut on a turbo N/A running over 8.9 psi = bad.

Agent_D

iTrader: (2)

8.9 psi on an n/a engine = bad anyways unless you got an S-AFC or some other kind of fuel controller

if you dont have a fuel controller dont run over 6 psi of boost on an n/a engine, dont know about the fuel cut off though, i just know it has a fuel cut off 600rpm over the redline reading

mazdaspeed7

Yes they have fuel cut, but as far as I know, its JUST rpm-based. I doubt there is a boost related fuel cut on n/a ECU's.

tmak26b

My 90 gxl coughs at 8800, then keeps going

Agent_D

iTrader: (2)

gotta love broken rev limiters tmak all of the 7's ive had had ones that work, so no going over 7600rpm for me

mazdaspeed7

You suck. My car is still pulling at 8800, and the rev limiter stops all the fun.

HAILERS

I hit that once and thought I broke the engine.

Drakk0r

I plan on running 8-12 psi. Of course I'll have the fuel system to support it, the S-AFC to tune it, the timing retarded, and running 93 octane + octane boost in every tank. And I plan on running 4-5 psi when I first get it running, and gradually tuning it for more and more as I get the tuning right..

tmak26b

I have the car dynoed and tried up to 9000 RPM, on a stock car, anything about 7K RPM is useless