Many resales of the Holley (Sniper) & other aftermarket Fuel Injection Systems

You touched on a good point there, proper grounding. I added a ground from the throttle body right to the firewall instead of grounding through bolts to the intake and engine block.

You also need to make sure you have no exhaust leaks. My collector flanges are banged up pretty good, and took me a while to get everything sealed up perfect so my O2 sensor could do its job properly.