So is it possible that computer will advance timing until it senses knock on newer cars? Seems this engine has 11.8 as it's the same drivetrain from the LS series, just minus direct injection.
Performance Parts & Fuel in Broken Arrow used to sell hi-octane gas, some at the pumps and some out of barrels in the back. IIRC, they had 100 to 125 octane, thereabouts. I'd treat my Vette to some 100 octane now and then, though at the time it was some $5 a gallon. Why did they shutter their business, does anyone know?
So is it possible that computer will advance timing until it senses knock on newer cars? Seems this engine has 11.8 as it's the same drivetrain from the LS series, just minus direct injection.
I'm not certain it goes that way, I suspect it is more that there is a target advance, it will maintain it if it isn't knocking.
So is it possible that computer will advance timing until it senses knock on newer cars? Seems this engine has 11.8 as it's the same drivetrain from the LS series, just minus direct injection.
How many miles are on your engine? Carbon build up and worn parts can cause a decrease in performance that higher octane (or more likely formulation additives) may remedy. If you have some carbon build up in your combustion chambers, the engine may be knocking and the ecm is pulling timing to compensate. The higher octane fuel reduced the point at which the knock occurs, allowing the ecm to run the timing where it is supposed to be. I would suggest a cleaning product, like Seafoam or CRC 1-Tank Renew. I put some CRC in my 2002 2500HD (6.0 liter LS-series) on a road trip hauling a 24-foot race trailer. The first tank was normal, the second tank I picked up 2 mpgs while towing an 8500 lbs load, went from 6 to 8.
Small market? What changed from the mid 90s when it was all over Oklahoma? Is this what you have been told by someone in the industry? In terms of elevation, is our elevation that significantly different to warrant the difference? If so then what's the critical point? Just curious.
OK, so if I can get better performance from good quality gas, then who makes the best quality gas? Anyone know?
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