I just got my ECU back from my mail order tune, and was able to start my car for the first time. It sounds like it is running fine, but fuel is coming from my tail pipes. I'm running 36lb @ 58 psi injectors, stock MAF, MS3, 243, LT, lid, LS7 coils. I have no check engine lights, and all the EGR and emission stuff has been removed. Any ideas? I want to fix this issue so I can break it in....

 

Do you have raw fuel, or is it running very rich?

 

Smells like raw fuel. Been told it smells like fuel from about 50yds.

 

I'm gonna pull the plugs tomorrow to see if they shed a little light on the situation.

 

Hook up a fuel pressure gauge to the rail, see if it holds pressure after you shut down the engine. If it drops straight to zero it's possible you have an injector stuck open.

Were the injectors new or used?

 

Problem solved. A bad injector in the #3 cylinder.

 

Glad to hear that was it, Brian (well, sucks you have a bad injector, but glad it's not the tune)!

 

Nice catch bro. It could have been catastrophic, had the injector puddled the cylinder.