exhaust?

[hylanderr]

i've had my 1997 S14 for almost a year now and have just started to notice a bit of a pop when i change gears, this only occasionally happens, pop seems to occur from the tip of the exhaust. only happens with the aftermarket exhaust (3" inch straight thru) run the stock exhaust a few months back and no pop at all.

Does anyone have any info on this for me or has this happened to someone?

cheers

[R3N]

are you running an atmo BOV?

[hylanderr]

are you running an atmo BOV?

its plugged up atm, so no

[R3N]

well its not recirculating. that's what's causing it, ecu thinks the vented air is getting plumbed back into the intake, pours more fuel in and thats what happens

[MikeS14]

Also check you got no air leaks in pipes and vac lines etc.

[hylanderr]

well its not recirculating. that's what's causing it, ecu thinks the vented air is getting plumbed back into the intake, pours more fuel in and thats what happens

so if i put the bov bak on properly should this stop?

[R3N]

not unless its a recirculating bov, such as the stock one

[hylanderr]

not unless its a recirculating bov, such as the stock one

tru, does running it with no bov or an aftermarket 1 hav a bad efftect on the car?

[R3N]

damage from running with no bov is debatable, some say it damages the turbo, some say its fine. look up compressor surge or flutter. i used to run no bov because didn't want cops to give me a yellow for it and was looking for a kit to plumb in my SSQV anyway

aftermarket bov doesn't have any bad effects that i know of, just causes the car to run a tad rich and causes the popping sounds because of what i explained before

[hylanderr]

damage from running with no bov is debatable, some say it damages the turbo, some say its fine. look up compressor surge or flutter. i used to run no bov because didn't want cops to give me a yellow for it and was looking for a kit to plumb in my SSQV anyway

aftermarket bov doesn't have any bad effects that i know of, just causes the car to run a tad rich and causes the popping sounds because of what i explained before

yeah, but im thinking of putting the bov bak on as ther is a massive amount of flutter coming from the pod filter, nt sure if thats a good thing either

[MikeS14]

That is the air rebounding off the throttle body and going back into the turbo aka compressor surge.