pocket flames?

[jakeachy]

Will our cars throw flames at downshifting, or any time?
n1 3" catback
megan up/dp

 

[hubz91talontsi]

They will throw some flames..Need lots of fuel =) Lots of hp would be easier also.

 

[Locke]

They're not supposed to.

 

[snowborder714]

The only time I've seen it is with anti-lag.

 

[7"exhaust_tip]

So, since there not supposed to, is that a sign of a problem? Just running rich because of boost leaks, etc.?

People tell me that mine shoots flames every now and then. My car is mostly stock, with turboback, injen intake, greddy bov, mbc.

 

[Locke]

The factory ECU stops delivering fuel when the throttle is closed and the RPMs are more than a bit above idle.

A faulty or misadjusted TPS can cause backfiring during decel or while shifting, as can a leaky injector. If you're not running rich and it only sometimes happens, I wouldn't worry too much about it unless you are striving for perfection.

 

[big_d]

Could venting cause this? Shot in the dark, doesn't it make you run rich between shifts?