exhaust back fire

[sn00za]

hi
what couse the exhaust to back fire?

[ECU-MAN]

what ecu do you have, raw fuel (unburnt) pumped into the exhaust is one factor. does it do it more under deceleration ??

[bizee_1]

what does it mean if it pops/crackles/fires a little after backing off the throttle ?

[2ds]

what does it mean if it pops/crackles/fires a little after backing off the throttle ?

usually that you have aftermarket extractors ;)


-2ds

[dr180]

its normal if you have a aftermarket muffler you just cant hear it with the stock one.

[sn00za]

what ecu do you have, raw fuel (unburnt) pumped into the exhaust is one factor. does it do it more under deceleration ??

stock ecu
its a spoon n1 axial back every time i go to change gear it back fires

[A'PEXi]

depends what type of car, usually running abit rich/unburnt fuel like ecu suggested. i dont see how having aftermarket extractors causes ur car to pop? :P

[2ds]

depends what type of car, usually running abit rich/unburnt fuel like ecu suggested. i dont see how having aftermarket extractors causes ur car to pop? :P

they can make it all burbly...

-2ds

[jenova]

it's normal, any n1 style exhaust will have this feature.
reset your ecu might help a bit.

[Psyklops]

I am pretty sure it is caused by unburnt fuel igniting in the exhaust system...I reckon before the cat..I doubt it has anything to do with what headers are on the car......maybe check your plugs for deposits? sheeeet I'm just guessing don't listen to me! :D

[PhatSol]

i dont see how having aftermarket extractors causes ur car to pop? :P

Aftermarket extractors/exaust can upset the factory air/fuel ratios due to the change in flow & backpressure.

[imashy14u]

Your car is running rich. The location of the oxygen sensor on your after market extractors may not be the same as the factory one and so readings may be a bit different, and then causing the ECU to possibly run the engine rich.

[PhatSol]

But the ECU ignores the O2 sensor under trainsient conditions anyway. O2 sensor is ony for idle and steady state cruising. Besides, the honda O2 sensor is heated, so the placement shouldn't make that much diffrence.

[sn00za]

Your car is running rich. The location of the oxygen sensor on your after market extractors may not be the same as the factory one and so readings may be a bit different, and then causing the ECU to possibly run the engine rich.

i havent got an aftermarket extractors :rolleyes:

[A'PEXi]

Aftermarket extractors/exaust can upset the factory air/fuel ratios due to the change in flow & backpressure.

badluck. didnt happen in my civic :thumbsup:

[PhatSol]

badluck. didnt happen in my civic :thumbsup:

Badluck? No you will get popping or running lean, not bad luck. If it didn't happen in your civic then thats good, no popping for you :p

[A'PEXi]

lol yeh, meaning i had goodluck, u pop/run lean, ur badluck :P

[PhatSol]

lol yeh, meaning i had goodluck, u pop/run lean, ur badluck :P

Or goodluck if you like the fully sik popping hahaha :p