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Joined: Jan 2004
Posts: 130
adrian
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adrian

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2002 Toyota Celica GT

Joined: Jan 2004
Posts: 130
san antonio tx
Oct 7, 2:07pm - #293975 
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.

Joined: Dec 2003
Posts: 2,672
ragingpaseo
Specialist
ragingpaseo
2003 blue Toyota Celica
Specialist
2003 Toyota Celica

Joined: Dec 2003
Posts: 2,672
towson, md
Oct 7, 2:39pm - #293976 
i have this happen to my TRD muffler, checked your gasket yet???

Joined: Jan 2004
Posts: 744
Blue_Bomber
Senior Member
Blue_Bomber
2000 Spectra Blue Mica Toyota Celica
Senior Member
2000 Toyota Celica

Joined: Jan 2004
Posts: 744
Freehold, NJ
Oct 7, 3:00pm - #293977 
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.

Joined: Sep 2003
Posts: 286
Psquared
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Psquared
2001 Black Toyota Celica GT
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2001 Toyota Celica GT

Joined: Sep 2003
Posts: 286
Houston, TX.
Oct 7, 3:11pm - #293978 
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...

Joined: Jan 2004
Posts: 130
adrian
Member
adrian

Member
2002 Toyota Celica GT

Joined: Jan 2004
Posts: 130
san antonio tx
Oct 7, 4:10pm - #293979 
thanks, i have no cel but will try to reset the ecu

Joined: Jan 2004
Posts: 130
adrian
Member
adrian

Member
2002 Toyota Celica GT

Joined: Jan 2004
Posts: 130
san antonio tx
Oct 8, 8:06am - #293980 
i reset the ECU and the problem remains the same. any other suggestions??

Joined: Dec 2003
Posts: 2,672
ragingpaseo
Specialist
ragingpaseo
2003 blue Toyota Celica
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2003 Toyota Celica

Joined: Dec 2003
Posts: 2,672
towson, md
Oct 8, 8:13am - #293981 
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...

Joined: Sep 2004
Posts: 412
AzNRaCeR
Senior Member
AzNRaCeR
Senior Member
2000 Toyota Celica GTS

Joined: Sep 2004
Posts: 412
Ft. Laud. FL/FSU Tallahassee
Oct 8, 8:48am - #293982 
i thought the cat only takes out the CO?


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