hey im trying to hunt down a miss fire in my rb25det
the car is a stock rb25det making 470rwhp at 26psi
last 3-4 weeks its been getting bad, now its time 2 do something about it.
basically the car from cold will start up and run on 5 cyclinders for first 10secs then clear up and run fine.
i can drive around off boost and it will run fine. As soon as i give the car a hard time and thrash it, i can pull up and on idle its back to 5 cyclinders.mind you it runs perfectly fine under load/boost
ive narrowed it down to cyclinder 6 which is the cyclinder not firing.
ive tried new injectors,coilpack wiring harness etc
injectors have been cleaned etc and new seals.
ive done a compression test and its good came back with 150-155 from 1-6
anyone else got any ideas? some ppl ive talked to think its lifter problem in cyclinder 6?