MB...on my comptech setup my esm was wired into the ecu via the drivers side ...not sure where yours is!!!! lol but as the comptech esm install instructions I had it correct soooo....as for superchargeds2k...go under your hood look to the right in the engine bay locate the red fuel pressure regulator loosen the nut on top and get the correct size allen wrench and give the bolt a half of a full 180* turn...this should richen you up a bit and stop the check engine light from occuring again...tho this is only my advice and you SHOULD SHOULD SHOULD SHOULD!!!! HAVE A WIDEBAND!!!! while being boosted so you know if your lean or rich while your hauling ass around

 

o and retighten the nut after the turn

 

I did a quater of a turn on the fuel pump, runs great, no check engine light on yet.
Also, I did get a Pro-Comp A/F ratio gauge. working on installing it. Should I get a Wideband O2 sensor? It seems if I just hook up the A/F gauge to the OEM O2 sensor, it will just be a light show. Are those wideband O2's expensive?

Thanks again for the help!