Help R32 Misfire I Carnt Fix It Help!

[TwinTurboSupra+R32 Gtst]

hey guys my r32 gts4 is pissin me off i can not find out why it is missfiring after its warm on idle any help on this would be great my mech cannot figur it out and im over it its got a hiflowed garret t3 off a rb30 on it . 3 inch exhaust turbo back .fmic, bosch 040 fuel pump, nad also on full boost it is cutting out as im going full throttle is it fuel cut? its like i hit a brick wall i did not think skylines had fuel cut im running 15psi cause i have such a big turbo boost does not come on till 4g also i blocked off my pvc vavle cause it was stuffed and i have got to breathers coming off the top but any help on this would be great sorry for the long msg but im stuck cheers...

[Ceffy]

Run less boost, mate had a similar problem, we turned the boost down and it runs alot better.

[Benzino33]

hey guys my r32 gts4 is pissin me off i can not find out why it is missfiring after its warm on idle any help on this would be great my mech cannot figur it out and im over it its got a hiflowed garret t3 off a rb30 on it . 3 inch exhaust turbo back .fmic, bosch 040 fuel pump, nad also on full boost it is cutting out as im going full throttle is it fuel cut? its like i hit a brick wall i did not think skylines had fuel cut im running 15psi cause i have such a big turbo boost does not come on till 4g also i blocked off my pvc vavle cause it was stuffed and i have got to breathers coming off the top but any help on this would be great sorry for the long msg but im stuck cheers...

have u tried using the search function? i think this topic has been covered a few times.

But to answer your question, i probz think ur ecu is hitting R&R. are u running a stock ecu?

Turn the boost down to about 10psi and see how it goes, also check your coil packs and spark plugs

[TwinTurboSupra+R32 Gtst]

yeah i have the coil packs are fine there all fix up and i have gapped my plugs 0.8 ill try turning down the boost i am running stock ecu is there anything else i should try? thanks guys for all your help.

[Benzino33]

yeah i have the coil packs are fine there all fix up and i have gapped my plugs 0.8 ill try turning down the boost i am running stock ecu is there anything else i should try? thanks guys for all your help.

your stock ecu shouldnt be run over 12psi..it will go into boost cut mode

[TwinTurboSupra+R32 Gtst]

ok whats the best option is there a copgy back ecu chip i can get to override it or im going to dr drift in mel soon to get it tuned and sorted thanks for your help

Edited October 11, 2009 by TwinTurboSupra+R32 Gtst

[Benzino33]

ok whats the best option is there a copgy back ecu chip i can get to override it or im going to dr drift in mel soon to get it tuned and sorted thanks for your help

Yeah you would need a remap to run higher boost, or get a pfc or somethin.

a dr drift tune should be good tho. or u can buy an already tuned ecu for a lot cheaper,,but i dont trust them too much