Quote:
Originally Posted by rice_classic
All OBDII ecu's retard timing when knock is detected. Check
All OBDII ecu's on cars designed for 87 octane automatically detect and advance timing when higher octane is introduced than what the car was designed to run on? I don't think that's true.
But..  |
I have this suspicion that it's like this, if the car is meant for 87 then it might not have a high octane map onboard, but if it's tuned for 93/91 then it can detect the higher octane after it's been drinking 87 for a while?