Well when i used to rev my car it would like cackle at the end a few pops would come out the exhaust also after id get on it sometimes i would hear a pop come out the exhaust again. Well i changed my plugs,wires,coil and none of that solved it well got my opti changed last week and my popping noise went away just something id figure i would share with everyone

 

could the poping sound be caused by running really rich?

 

I think the problem is caused by aftermarket exhaust. I have the same problem but it didnt start till I put on the Borla Catback.

 

I have my stock slp 2OTL exhaust and I get that poping sound.. doesn't bother me.. actualy I kinda like it lol... been doing it ever since I bought it (didn't buy it brand new) so I don't know what it used to sound like..

edit: I think it's caused from unburnt fuel.. but not too sure

Trevor

 

Mine does it too, it's just because of the catback.

 

I read somewhere (on this board) that is caused by a free flowing exhaust and unburnt fuel igniting! Mine crackles a fair amount and pops only if I bring the rpms up really high!

 

as far as i know that is exactly why


I kinda like it too

 

my car does it and i have stock exdhaust and a new opti i might have bad 02's though is there any way i cancheck them

 

Im pretty sure that i read somewhere on this board that the popping sound is caused by leaks in the exhaust piping that allow fresh air in and that fresh air often allows additional combustion in the exhaust system. if im wrong please correct me, im a newb

 

It's because you have a gutted cat.

 

Mine is caused by short pipes and glasspack mufflers.
I also get a cool fireworks show from beneath my car if I get on it hard and let off, flames shoot out of the pipes.

Cool

 

You can scan for codes. There are a few that can indicate a bad O2 sensor.

 

Mine did it brand new. It's normal, especially when the engine is cold.

Dan

 

i have headers, ORP, open borla and i have no popping...

 

my cut out will pop when the car is cold like a quick burst through 1st, and nothing/little in second...thats about it...