Exhaust Goes Pop! When I Drive...please Help!

[R33Hesh]

just your fuel bills mate

true.. i already spend 400+ a month just work-home, home-work driving..

ill run for 1 month n see how bad it gets. n go back to the stock bov, thts if i dun get defected before that. lol

[NWR31]

mine does something similar as well, but im not sure why..

its a low/dull sort of pop after a gear change. i dont think i have a exhaust leak anyhwere, not running a bov at all or a cat & safc tune is perfect.

sounds good imo, but ive got no idea if it makin flames tho

[NWR31]

oh yeah my o2 gauge seems to verify the good afr's i got on the dyno

[nisskid]

lol its just the fuel being burnt off early in ur exhaust system, its just back fire.

a stock recirc valve vents off air which has already been through the AFM and recorded as air, so ur AFM is recording more air then is actually in there, so ur engine pumps in fuel to match, but finds there is not enough air to match the amount of fuel, hence running rich and extra unburnt fuel being passed into the exhaust, which ignites on the hot exhaust.

[MBS206]

Why does yours sound from there ? MBS206?

Missed this ages ago...

Mine sounds from up at the turbo as I run launch control... And it's not the light pops you are all talking about, I get bangs + flame...

But the light pops, are normal, and nearly every car does this, especially on down hills. Most cars though you can't hear it on as they run quiet exhausts.