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Joined: Jan 2004
Posts: 130
adrian
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adrian Oct 7, 9:07pm - #293975 

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2002 Toyota Celica GT

Joined: Jan 2004
Posts: 130
san antonio tx
Exhaust Question

Ive have a universal muffler with 2.5 pipe from the cat to the muffler. I have had it for about 6 months. It sounds great. Really loud!!! But recently when i let off on the gas, or barley tap on the gas, and every now and then in between 1-2 shift, the exhuast backfires or makes a poping noise. All this only happens at low speeds. It still sounds really loud and deep, but its embarrising when this happens. Do you think it is the muffer, welding, or the piping??? Any info would be great.
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ragingpaseo
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ragingpaseo Oct 7, 9:39pm - #293976 
2003 blue Toyota Celica
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2003 Toyota Celica

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Posts: 2,672
towson, md
i have this happen to my TRD muffler, checked your gasket yet???
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Blue_Bomber
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Blue_Bomber Oct 7, 10:00pm - #293977 
2000 Spectra Blue Mica Toyota Celica
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2000 Toyota Celica

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Posts: 744
Freehold, NJ
It has nothing to do with the integrity of the exhaust system. It's being caused by unburnt fuel passing through the engine and being ignited in the exhaust system. Most of the time mufflers cancel out this sound. Do you have any CELs or any problems with your car? Try resetting the ECU and see if the sound goes away.
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Posts: 286
Psquared
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Psquared Oct 7, 10:11pm - #293978 
2001 Black Toyota Celica GT
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2001 Toyota Celica GT

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Posts: 286
Houston, TX.
Hmmm just a guess but if it's un-burnt gas, maybe your catalitic convertor is shitting out. It's supposed to burn off extra gases and stuff. Just a guess though...
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Posts: 130
adrian
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adrian Oct 7, 11:10pm - #293979 

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2002 Toyota Celica GT

Joined: Jan 2004
Posts: 130
san antonio tx
thanks, i have no cel but will try to reset the ecu
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Posts: 130
adrian
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adrian Oct 8, 3:06pm - #293980 

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2002 Toyota Celica GT

Joined: Jan 2004
Posts: 130
san antonio tx
i reset the ECU and the problem remains the same. any other suggestions??
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ragingpaseo
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ragingpaseo Oct 8, 3:13pm - #293981 
2003 blue Toyota Celica
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2003 Toyota Celica

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towson, md
Originally Posted by Psquared
Hmmm just a guess but if it's un-burnt gas, maybe your catalitic convertor is shitting out. It's supposed to burn off extra gases and stuff. Just a guess though...

nah, he has a 02' and i've a 03', i doubt it...
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AzNRaCeR
Senior Member
AzNRaCeR Oct 8, 3:48pm - #293982 
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2000 Toyota Celica GTS

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Posts: 412
Ft. Laud. FL/FSU Tallahassee
i thought the cat only takes out the CO?

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