I know someone said this wasn't true but I don't remember the reasoning behind it. I know that when I switched back down to regular from 93, my car felt "better". And I know it wasn't just my head.
:Word:illwood said:On a stock car, the owner's manual will tell you which octane is recommended.
When you start modifying the car, like higher compression and or a more aggressive timing curve, you then need to run a higher octane to prevent detonation.
Punisher302 said:so if you bump the timing up, to say 14*, which octane should you run?
1st thing to do would be to check the timing and repost results...and go from there..95five-oh said:not trying to steal the thread, but my car is bone stock with 150k on the odometer and the timing has not been fooled with to my knowledge, but if i run anything but 93 octane, it pings and knocks like a diesel...anyone know what would cause this?
95five-oh said:not trying to steal the thread, but my car is bone stock with 150k on the odometer and the timing has not been fooled with to my knowledge, but if i run anything but 93 octane, it pings and knocks like a diesel...anyone know what would cause this?
mo_dingo said:87. if it pings, back the timing down. Running higher octane just to have a more agressive timing curve is like putting a humidifier and a de-humidifier in the same room and letting them battle it out. Very counter-productive.