Occasional pop and puff..?
During full throttle up changes I quite often get a muffled pop which is apparently accompanied by a small puff of sooty smoke.
Having searched it seems quite a common thing with scoobs. I understand the pop is down to unburnt fuel igniting in a hot exhaust, just not the soot..? Car is running extremely well and goes like fcuk..:D 05 WRX (340x333) full decat 2.5" ported headers VF35 pink inj walbro Green panel Sti TMIC/scoop & undertray PRF7b's ecutek v-power + millers OB etc, etc..;) I'm not worried in the slightest by this, just curious..:wonder: BTW running oem recirc. DV. and not using any oil..:):) |
the magnex decatted zost i have just had fitted pops a lot when car is warm... quite like it !:)
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Your car is running rich, it means the petrol never burns completely and will always leave soot. Just the way petrol burns unfortunately.
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