The seats are a nice detail. Curious they drain the turbo back into the pan. That is a no no according to the callaway install material. They have you drill a hole in the block higher. If it works though, cool. How close is the drain hose to the exhaust? The pic make it look very close, but its hard to tell.
I digress, the stage two kits are only set to 10 psi stock. Without the mods 2.0hhh mentions at 15 psi your results are to be expected. The fuel systems are capable of 220 hp with tweeks after that you need bigger pumps, etc..and so on. At 10 psi and a good condition motor they are rated at 175 hp. So that gives you an idea of what is left. I didn't see a wide band or anything listed currently installed. How do you know its lean? Also, a quick check of your base timing would be prudent. It may be set wrong not helping your cause. If it's at stock 6' it will ping for sure. Once you go micro squirt you are in for a lot of work tuning it in. Be prepared. It's cool car for sure. Nice score.
Woah here's a blast from the past. Where ya been, how's the truck?
@morriscode from the auction pics it looks like you do have the Deltagate, it's the round silver object with the red ring here (circled in yellow, to be confusing):
What you'll want to do is back out the larger Allen hex in the center (circled in white) try to drop the boost. The smaller brass fitting is for manual boost control, should you want to turn it back up. There should also be a vacuum line that runs from the intake tract pre-TB to the side of the Deltagate unit, I can't tell from the auction pictures whether it is present. If the line is there, then check that it is not compromised ie cracked/leaking, otherwise the Deltagate will not actuate correctly. One time I forgot to reconnect this line and I pegged the boost gauge (15+ psi). It was fun for a few seconds but I had built up enough boost that when I let off, the surge was enough to snap the lockwire holding my inlet elbow on. Oops.
The receipt from Grossman Tuning references "Micro install injector" and there is something plugged into the cast intake elbow, so it would seem that you are microfueller equipped. I'm not sure how to verify that it's running though, you would probably need to find the signal line to the controller and apply boost to it to see if the injector fires. Obviously use a bottle or something to catch the fuel.
Easiest solution might be octane booster or 100 octane.
