Quote:
Originally Posted by radz28
Does anyone have an option or insight as to SOI bring high? In a rough tune, on a stock cam LT4, my logs show SOI getting close to 380* My IPWs are holding at about 4.8ms, and rail pressures were holding at commanded. My SOI calculator shows I'm injecting before TDC, but after EVC. My EOI shows I'm at 193*, so I'm also not injecting into compression.
Is there a reason I couldn't inject some beyond 360*? Because this is on full pump E', should I try taking some SOI out of the alcohol adder? Maybe see if that brings SOI down and see what it does to IPW and rail pressure?
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380 sound high to me. I believe the big boys are usually capping that around 370 (and I’m at 365 if memory serves). 365 was worth almost 30 WHP over 330-335 in my back to back dyno testing. But you should look at your cam timing and overlap to make your final decision.
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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)
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