Exhaust pops between shifts.

[BoBa524]

So ever since i installed my S14 SR, i've had exhaust pops between shifts.

On here i was told to do the following:Change spark plugs - didn't help.Set timing - didn't helpRecirculate the BOV - didn't help

So then i readjusted the throttle cable for least slack. - Cut pops by 30%Installed a 3" Catco Cat from frsport - No more pops unless i really shift like a retard.

I originally had a gutted stock cat with 3" downpipe and 2.5 exhaust.

[nametakennow]

Wrong forum, this is FWD SR.

You could be running rich, or it could just be the comparatively small catback. Get a 3in catback on there.

[S14toRPS13]

I've had that problem with my last SR and my current one. Mine really isn't all that loud and it doesn't bother me much.

Off topic, but from a very reputable shop around here. I was told that gutted cats and test pipes don't do much for our cars. They even had the dyno charts to prove it. It was only a 2 to 3 hp gain. I was just wondering if you noticed any difference going from a gutted cat to the Catco cat?

[Hijacker]

It was explained to me recently that the popping happens a lot on cars that run without an inline resonator or other some kind of expansion chamber.

Also, running rich will cause the issue as well.

[BoBa524]

It was explained to me recently that the popping happens a lot on cars that run without an inline resonator or other some kind of expansion chamber.

Also, running rich will cause the issue as well.

Well i have a 2.5" BRM with 22" resonator exhaust. I freaking love this cat, i have no more exhaust smells or anything. frsport saves the day again.

[Hijacker]

How do you like the BRM? I'm getting ready t o drop my current "custom" exhaust for a BRM, but I'm undecided between the 2.5" or the 3". I currently rock a 2.5" setup

[CoupedUp]

Check for boost leaks or vacuum leaks. You may have a small one giving you a small AF inbalance.

[inkslingers13]

thats odd, i automatically thought it was a BOV problem seeing as between shifts your car richens up with a open bov... thats good you fixed the problem, and hijacker go with the 3'' youll love it. and if you one day decide to go with a crazy turbo set up youll already be set.

[T-rev]

I currently have a BRM exhaust in 3" and Im very happy with it. Fits great even tho 3" is pretty big

[inkslingers13]

im running 3 1/2inch RS*R I LOVE IT!!!!!!!!!!!!!!!!!!!

[BoBa524]

How do you like the BRM? I'm getting ready t o drop my current "custom" exhaust for a BRM, but I'm undecided between the 2.5" or the 3". I currently rock a 2.5" setup

it's a well made and great sounding exhaust. only problem is that it rests on the rear sway bar. and i know i'm not the only person with that problem.

Check for boost leaks or vacuum leaks. You may have a small one giving you a small AF inbalance.

Once i get my front mount i will redo all of my vacuum lines;