Does no CATs = backfiring
Thread Starter
Racer
Joined: Nov 2002
Posts: 320
Likes: 0
From: Bradenton Florida
Does no CATs = backfiring
I was thing about removing the CATs and putting mufflers on(which would
mean I would have straits with only mufflers), anyway my question is would
this cause back firing, My friend had a 95' Camaro and had no cats with only
one flowmater muffler and his car backfires when he lets off the gas.
mean I would have straits with only mufflers), anyway my question is would
this cause back firing, My friend had a 95' Camaro and had no cats with only
one flowmater muffler and his car backfires when he lets off the gas.
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Re: Does no CATs = backfiring (C4kid94)
Well it's not a true backfire really. Any exhaust leaks will make the condition even worse. It will make more noise for sure if you remove the cat but it's harmless. If you don't like the noise than you really should leave the cat in place.
Melting Slicks
Joined: Jan 2000
Posts: 3,418
Likes: 1
From: NW Chicago Suburbs
Re: Does no CATs = backfiring (C4kid94)
...no cats...his car backfires when he lets off the gas.
Eric
Safety Car
Joined: Oct 2001
Posts: 4,763
Likes: 1
From: Connectivette
Re: Does no CATs = backfiring (silver & red CE)
My findings are the less restrictive the exhaust, the less it backfires.
1st exhaust mod.....muffler eliminators
2nd exhaust mod.....catless front y-pipe & hi-flo cat
3rd exhaust mod.....long tube headers
I noticed less backfiring (if you will) after ea. of these mods.
1st exhaust mod.....muffler eliminators
2nd exhaust mod.....catless front y-pipe & hi-flo cat
3rd exhaust mod.....long tube headers
I noticed less backfiring (if you will) after ea. of these mods.
Le Mans Master
Joined: Jun 2001
Posts: 6,694
Likes: 3
From: Less Talk, More WOT | Houston TX
Re: Does no CATs = backfiring (C4kid94)
i dont think its really backfiring per se, just a lack of backpressure making a poppin sound when you let off the accelerator. I had my mufflers off for the last 2 weeks and it was doing this like crazy. Now that they are back on it has stopped.
Melting Slicks
Joined: Apr 2002
Posts: 3,019
Likes: 0
From: down that one road next to that big tree
Re: Does no CATs = backfiring (silver & red CE)
...no cats...his car backfires when he lets off the gas.
When I had my Vette's PCM reprogrammed this was fixed, I guess the stock PCM programming runs rich when you let off the gas to prevent detenation, the effect is the "backfire" sound.
Eric
When I had my Vette's PCM reprogrammed this was fixed, I guess the stock PCM programming runs rich when you let off the gas to prevent detenation, the effect is the "backfire" sound.
Eric
Thread Starter
Racer
Joined: Nov 2002
Posts: 320
Likes: 0
From: Bradenton Florida
Re: Does no CATs = backfiring (Wheelman)
i dont think its really backfiring per se, just a lack of backpressure making a poppin sound when you let off the accelerator. I had my mufflers off for the last 2 weeks and it was doing this like crazy. Now that they are back on it has stopped.
has a nice burble when I let off the gas but no poping, I just cant stand the
poping my friends camaro makes.
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Race Director
Joined: Oct 2001
Posts: 19,653
Likes: 428
From: Melbourne Florida
Cruise-In IV Veteran
Re: Does no CATs = backfiring (C4kid94)
Mine gurgles a bit when I back off but I kinda like it... :) ...I have long tubes then pipes only back to stock mufflers...good luck
