2007 ls7 z06 Corvette. Installing ecs supercharger 6lbs. Im currently 2 base speed density. Where should afr target for idle and off boost, under 3k 30% throttle be targeted. Still 14.7, should it be 14.0 or 14.3 for the 10% ethanol in gas nowadays? Or since the supercharger is always running should i target something like mid 12s afr when driving around town? And mid 11s for PE? Thank you in advance for any help
Nothing changes outside of boost. Superchargers like the one you have, have boost bypass valves for a reason. You target the same on a NA engine everywhere outside of boost for idle and normal driving.
If you are running E10, set stoich for that. It you already dialed the whole thing in on E0, leave stoich at 14.68.
The 2 bar OS allows you to setup power enrichment and boost enrichment. "Most" will have PE active above 80-90kpa and boost enrichment starts at 110kpa. Power enrichment would stay like it would NA and then slowly increase as boost rises to your target value. So say you want 11.5 commanded at 6psi. You can either slowly ramp in the fuel or just go straight to 11.5.
Supercharger like that will hit boost almost instantly, so going straight to your target makes more sense. Turbo or centrifugal blowers can/will build boost more slowly so you can ramp in the fueling as boost rises.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
Sooooo freaking helpful, you just saved me hours of trial and error, and possibly unwanted detonation. Thank you very much
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