exhaust popping

[brando]

I have a Bullitt with a 2.5" catback and Spintech Sportsmans welded in. Stock H-pipe without the back two cats. All else is stock. WHy do I get this annoying popping sound when I let off the gas and idle down? It scares little kids when I have my foot in it, then I let off and it's like I'm in a different car?

WTF?...over

 

[brando]

Don't everybody all chime in at once

 

[NightLife]

its normal w/ an aftermarket exhaust... but you dont have one.

you do have cats right? usually thats what causes it... i like it somewhat so it doesnt bother me.

 

[brando]

its normal w/ an aftermarket exhaust... but you dont have one.

you do have cats right? usually thats what causes it... i like it somewhat so it doesnt bother me.

Thanks nightlife...Yep I have a Magnaflow catback but put Spintechs in thinking the slight baffling in the Spintechs would diminish the popping. It didn't. I don't regret the Spintechs though.

MY stock mid-pipe has been modified slightly...the back two cats are hollowed out. So you think the offroad pipes will stop the popping? X or H-pipe? I kind of like the x-pipe angry sound.

 

[Indiana]

The cause of the sound is unburnt fuel lighting off in the exhaust pipe. As was said before, it is normal with after-market exhaust. Unless it is REALLY loud.

 

[brando]

The cause of the sound is unburnt fuel lighting off in the exhaust pipe. As was said before, it is normal with after-market exhaust. Unless it is REALLY loud.

Thanks Indy...I just wish I though. It is a low rumbly pop though.

 

[mity2]

kind a like littlw pop myself

 

[brando]

kind a like littlw pop myself

Well maybe my exhaust doesn't sound bad to other folks then either.

 

[01MachGT]

an off road pipe will only make the popping more prevalent. I've got an OR/X (mac) with magnaflow cat back and love the sound of it.

 

[Qrazy02GT]

Check for exhaust leaks, a leak upstream can give a little extra popping out of the back....

 

[DELOS02GT]

Mine does that too. It's normal don't worry about it. I just let the car idle to a stop and it's quiet.

 

[01MachGT]

yeah, engine braking makes it pop lots. (engine braking is fun lol)

 

[Krindor]

Heh, I have SLP Loudmouth catbacks on a stock mid-pipe. Popping like crazy! (I love it)

 

[stang976]

yea unburned fuel can cause that. i would imagine if your running rich then that would cause popping sounds.....but i did read a post on MD that lean conditions cause backfiring.. anywhoo look into that as well if it is a serious popping or backfiring noise