Hey guys
ive got a MY02 bugeye, and its in excellent condition but my brother who loved the feel of mine bought himself a 95 wrx and has had backfiring problems ever since.

Ive replaced the leaking blow off valve, ive changed the radiator which had a leak, ive replaced the spark plugs which seemed to be in a mediocre condition and the car is running rich but as soon as i hit boost over 5000rpm it starts to backfire! before the sparkplugs were changed it would start to backfire as soon as i hit 3800 rpm so it has slightly gone up but still the issue is there

i dont know what other problems it could be maybe a worn turbo that needs replacing?

thought ide ask the rexperts
any help would be greatly appreciated

what plugs did you put in?

plugs i got from Super Cheap Auto. I didnt think too much of it ?
Should i be looking at getting different plugs ? :S

NKG to be exact.

what did you gap the plugs to?

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RS Liberty - Because WRX's are only good for parts...

coilpacks!

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MY93 Impreza GX 1.8L, 0hp, 0nm

0.7 mm and i was thinking it might have been coil packs,
might have to give that a try.
money money money

Upgrade to bosch HEC Coils.

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RS Liberty - Because WRX's are only good for parts...

fuel cut... thank god... boost was through the roof. the guy before my brother boosted it to 19 psi

GRR

Get your self a fuel cut defender