R34 Popping Sound

[drgnball34]

My R34 has basic mods. turbo back exhaust, intercooler, bov and CAI. I've noticed that when i give it some, especially in 1st, i can hear popping sounds towards redline. My friend thinks that its leainig out but how can it be? I havnt touched the boost and if any it might be a few psi more due to the exhaust. And to make things complicated, ever since i got SSQV, it back fires alot. Only thing i can fink of is it's running rich due to the excessive being released.

[ecl]

missfiring i assume

check plugs (condition/gap), coils for cracks/damage

[Abo Bob]

Check your plugs. Gap them to 0.8 and if that doesn't fix it your coils are probably on the way out just like so many R34 coil packs before them.

[Links]

Is it popping as you accelerate or once your backing off?..

[dezz]

my car does it when backing off...usually in 3rd.....thought it was a fairly normal thing when its coming down from high revs?