05-01-2022, 01:10 PM
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#2
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2020 Shadow Gray 2SS
Drives: 2020 2SS - A10, NPP, MRC, CAI
Join Date: Dec 2019
Location: SoCal
Posts: 3,833
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Quote:
Originally Posted by overdriv
I can't seem to find any 93 octane fuel in the south western states, but most every fuel stop has had 91 octane fuel. Was wondering if any one has done testing of both to see what the LT1 gives up, if anything, when using 91 octane fuel?
Does the computer actually know when a fuel less than 93 is being used or does it only know there is more pre-ignition, knock?
The car seems to run the same and seems to get decent MPG, just wondering how much timing is being pulled out using 91 octane fuel.
It seems to be compensating for the thin air very well. Still runs like a beast when needed, or wanted.
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All we can get is 91 octane out here in Kalifornia... I'm sure it pulls a little timing to avoid knock and detonation, guessing it gives up 20-30 HP...
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2020 SGM 2SS - A10, NPP, MRC, Red Calipers, Black Fender Badge, Footwell Lighting
After delivery: - GMP CAI, GMP Black Strut Tower Brace, MRR017 1LE Wheels, SS Armrest, Black Fuel Door, Stainless Pedals, SS Wheel Caps, GM Splash Guards, DD Smoked LED Markers, Smoked Rear Reflectors, Mishimoto Catch Can, Xpel PPF-Full Front & Rockers, 35% Tint, CeramicPro coated, RST Stainless Brake Lines, Castrol SRF, MSD Plug Wires, Mamo V3 Ported TB
Left: My "fun" ride (475 HP). Right: My "work" ride (52,000 HP): a Gulfstream G600. One's top speed is 180 Mph, the other, 620 Mph. BOTH AWESOME to operate...
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