I just installed a catback on my 2003 g35 6MT and at first I thought it was just because the ECU needed to get used to it. But now I don't know. Problem is, when I turn the car on it feels like it's trying to get gas than dies but if I rev it at the start up its fine.. I'm confused. Any help would be appreciated. Thanks in advance

 

How many times have you driven it since the install? Also what altitude are you at?

 

I've driven it probably 6 times? And almost right at sea level lol

 

I'm installing a catback and ART pipes on my 2003 6MT in the next week so curious to see what this is all about. Sorry I'm not able to help...BTW what kind of exhaust did you put on?

 

It's a magnaflow cat back. I'm getting the XYZ w/ resonator next than the ART pipes. It doesn't sound too bad and I wanted to go with something a little different. I couldn't afford the shockwave all at once lol

 

It's a magnaflow cat back. I'm getting the XYZ w/ resonator next than the ART pipes. It doesn't sound too bad and I wanted to go with something a little different. I couldn't afford the shockwave all at once lol

 

Have you checked for exhaust leaks?

I would reset the ECU by disconnecting the battery or doing the pedal press technique. Then go for a drive (15+ miles) so the ECU can calibrate fully.

 

I'm taking it to the lift tomorrow to check and I will reset the ECU than and go for a little cruise

 

So still Having the same problem but it doesn't do it on a cold start... Reset the ECU and drove for a good 50 miles after... Could it be my throttle body???