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Jul 12, 2005 | 12:41 PM

FD3S2005

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SideWayZ The Only Way

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From: Davie, Florida

Backfire

What makes the car backfire?

Jul 12, 2005 | 12:55 PM

x2boxers

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An overload of fuel. It gets forced out during the exhaust cycle and is ignited in the exhaust system. My car has been runnig pig rich and backfiring big time for a while due to a bad intake air thermosensor "code 11". I am in the process of fixing that now. That seems to be my cause but I am sure there are other causes.

Jul 12, 2005 | 12:59 PM

FD3S2005

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SideWayZ The Only Way

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From: Davie, Florida

but i have seen ppl doing it on purpose and such... i donno if its good or bad but i mean like in races and stuff it backfires

Jul 12, 2005 | 02:04 PM

Mahjik

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From: Kansas City, MO

Quote:

Originally Posted by FD3S2005

but i have seen ppl doing it on purpose and such... i donno if its good or bad but i mean like in races and stuff it backfires

Because the cars most likely don't have a catalytic converter to burn off the excess (hence why you don't hear normal production cars backfiring).

Jul 12, 2005 | 03:49 PM

tsmysak1

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From: Indiana

Quote:

Originally Posted by FD3S2005

but i have seen ppl doing it on purpose and such... i donno if its good or bad but i mean like in races and stuff it backfires

It can damage the muffler or pipes, after all it is an explosion. I have seen it blow the exhaust clean off a vehical; then you are back jacking with it in the shop.

Jul 12, 2005 | 08:05 PM

FadedFD

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Everyone loves a flame thrower

Jul 12, 2005 | 08:58 PM

FD3S2005

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SideWayZ The Only Way

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From: Davie, Florida

ooo good thing mine dont do that then

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Jul 12, 2005 | 09:07 PM

ROTORhead93

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From: Pleasanton, CA

Quote:

Originally Posted by FadedFD

Everyone loves a flame thrower

Jul 13, 2005 | 01:42 AM

RotorMotor

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Quote:

Originally Posted by x2boxers

where is the air intake thermosensor? and how can i check it? i have backfiring for a few minutes after startup (usually a few pops on decel). stock car except for DP, metalic substrate HF cat, and exhaust. (i dont want the backfires to ruin the delecate cat... it was expensive). thanks, heath

Jul 13, 2005 | 07:57 AM

#10

Mahjik

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From: Kansas City, MO

Quote:

Originally Posted by tsmysak1

It can damage the muffler or pipes, after all it is an explosion. I have seen it blow the exhaust clean off a vehical; then you are back jacking with it in the shop.

mmkay.

Quote:

Originally Posted by RotorMotor

The IAT is located under the UIM. Backfires are not harmful on this car. It's normal once you begin to modify the exhaust. If you have a programmable ECU, you can tune it pretty much out as there are deceleration fuel settings on most of those ECU's which is where most of the backfires will occur.