Quote:
Originally Posted by KingLT1
I believe what you found is optimal injection time for max power @ 350. Further advancing the SOI to 370 is richening up the AFR due to the longer injection window? In theory that should allow you to pull some fuel and reduce fuel system demand.
Great info!!
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Thanks! My tuner, Josh Pearl of Performance Dyno, was a good sport and gave me a hour of dyno time on the house so that we could both experiment with SOI. It was good stuff and eye opening.
So what’s clogging my brain is: is 370 actually richening it up? If the amount of fuel is the same that got sprayed in, and the IPW didn’t change, why is it richer? I feel like I’m missing something. If IPW was different then maybe that would be a clue. Maybe 350/370 just gave it more time to burn in the chamber?
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, ATI 8L90, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors & BB HPFP, TooHighPSI/Katech port injection, 15” conversion 1066 WHP STD/1027 SAE, 9.10@152.5 (new times coming)