so i just got my ls/vtec hooked up in my 95 teg and it ran for 2 weeks. and since then i put on a test pipe and a 2.5 inch exhaust back to the stock muffler. The car started acting wierd it only would run good with the check engine light and now it wont even start. it will start for 2 seconds idle then die. need help what do you think it could be???

 

bump
same situation as you

 

hows your fuel pressure

 

what codes are commong up?

 

running too lean no backpressure?

 

try a stock cat and reset the ecu b4 trying to start it again