Need Help

[r3225t]

Hey guys i need some opinions on this

I have an r32 gtst, its pretty stock engine wise just has a filter a cat back 3in and an early model safc,

its boosted to 14psi but it has a miss at full throttle (still has a miss even at stock boost), im pretty sure its not detonation, just a miss, i have changed the tps, afm, all the coils, and the cas, pretty much everything except the o2 sensor (because its fairly new) but it still does it, if i wind the fuel back slightly from stock it is better but still sometimes does it, its really annoying. Any good ideas anyone?

[Munna1]

checked plugs? what gap you running?

[RANDY]

Need Help, engine missing!

Pssst... under the bonnet ;o)

What coils did you change them to? It really sounds like the old coilpack problem.

[r3225t]

Pssst... under the bonnet ;o)

What coils did you change them to? It really sounds like the old coilpack problem.

Ive changed the plugs twice, tried 0.8 and 0.9mm gap, i put my rb25det coils in it

[lows_13]

R33 S1 or S2 coilpacks?

[RANDY]

yer.. I don't think you can swap coilpacks between R32 and R33 series 1 even? Dunno.

[Guest 40th-edition]

Sounds like a coil problem to me as well

the O2 sensor cuts out at full throttle so if it does it at full throttle as well u can eliminate that...

does it change as the heat changes of the engine?

[MKDR33]

just tape up the rb25 coilpacks and it wont miss..

[r3225t]

theyre s1 coilpacks, ive used them before on an rb20 they worked fine, i dont know if it changed dependng on engine temp cos dont thrash it when its cold and it never gets over normal operating temp, im sure its not the coils as this is the second set, i brought the timing back just slightly seems to be better, but i shouldnt have to retard it at all