help me please, ever since ive gotten this madz28 pcm tune
its been misfiring and i hear an exploding noise of
gas from the exhaust when ever i do anything, like
press it a little or floor it, or sometimes from
normal driving!

 

So immediately before the new tune was uploaded your car was fine and immediately after it's messed up?

 

when i tested it out before i got the tune it didnt do this until yesterday when i teste it out when i recieved the pcm tune, but a month ago i also did lt headers... so i dont know what to do to fix this problem?

 

Get rid of your air pump.

 

i got it turned off on the pcm from madz28, but i didnt remove it, should i?

p.s. i think its a backfire not a misfire?