Having problems after installing 7th injector kit. Need help fast!

Which 7th injector kit? URD or TRD?

 

Yeah my suspicion was definitly wiring. There's no real place to screw up the URD kit except miswiring.

The piggyback should have a factory tune on it (or I should say mine had one on it) and it ran like a bat out of hell right out of the box. What exaclty is running like crap?
Are you running a smaller pulley?
Premium gas?
Did you hook up the boost port to the piggyback?
Did you gap the plugs that come with the kit? They come with a factory gap but the gap is way to small. IIRC you have to set the gap to .043. Don't use a gaping tool either. Use pliers and a feeler gauge to measure. If you used a gapping tool, I'm sure you bent the thin irridium electrode (ask me how i know ).

 

Ask and ye shall recieve!

I'm assuming since you have an 04 like me you have a Drive by Wire Throttle body. If so, this is you're vacuum diagram (nevermind it says 4runner):



If you still have a vacuum thottle body, its one of these diagrams:






The boost/vacuum line that runs to the AIC is supposed to T off the line that runs to the fuel pressure regulator.

Absolutly, 89 octane will make you ping.

One other note. The vacuum/boost line that runs to the AIC will make a ticking sound. At first listen it might sound like a ping. Depending on where you mounted the AIC, you might here a pulsating sound coming from it at low RPM ranges. What you are hearing is the supercharger impeller pulsating and that sound travels through the vacuum line. Even with the restrictor T that URD sends, I still hear the sound at low RPM under moderate boost. Listen close, it's not a ping. It's a perfectly synchonous sound and not sporadic like the old pinging sound.

 

One more diagram for good measure