backfire??

[jimsstang91]

when the car is cold i get a popping backfire though the intake or throttle body. when its warmed up its fine. what could this be???

 

[jimsstang91]

anyone

 

[gcwh02]

could be from running to rich, whats your setup and fp at?

 

[Roland69]

what year is your car

 

[HISSIN50]

This backfire occurs when idling, while RPM's are gently increasing, rapidly increasing.............?

What codes are you seeing (Pull them even if the CEL has not been illuminated)?

What is your timing set at?

Offer as much info as you can - there are myriad possibilities for such an issue.

Good luck.

 

[vristang]

when the car is cold i get a popping backfire though the intake or throttle body. when its warmed up its fine. what could this be???

What are you calling warmed up?
Full coolant temp, or just coming out of open loop/startup?
How long does this usually take?

jason