I the ati system installed. I have about 4000 miles with no problem other than it being very rich. Until now. I was in 3rd gear at about 35 mph I went to wot at about 3 to 4 psi there was a big pop. Back fire or hose poping off not sure at this time.
But the car Would idle fine but would not run under a load. It just bucked and jumped. After shutting the car off and restarting it seem to run fine. But I have not yet made boost. Any Idea on why?

 

Probably one of your pipes came loose, did you check that? Check the hoses also for a vaccum leak.

 

I understand what the poping my have been. But why did the car run so bad affter that. With no boost. But after restating it was fine.