Why is my exhaust popping/backfiring?

[maxperformance]

Ever sinse i got the downpipe on the ride, at like 15psi when i accelerate hard and at the track last night the exhaust like pops or backfires. Accually its more like a poping and the car kind of bogs out for a second. I dont knwo what it could be. It cant be good.

 

[phatTSi]

My friend has a 95 fwd tsi and he has a problem sort of like this
at about 15 psi it stutters and then goes away. All we did to his car was change the plugs and wires. Not sure if this is whats wrong with your car but it cant hurt to changes the plugs they are only 1.50 apiece.

 

[nine5raptor]

If you are using platinum plugs, they are most likely the cause.

 

[maxperformance]

ACCUALY i its my injectors they are stock, an its fuel cut....problem solved thanks tho

 

[nine5raptor]

Good ole fuel cut

 

[out there]

fuel cut or something ignition related are my guesses.
i had a problem similar to this before i hacked the mas and again right before changing spark plugs