Originally posted by hetfield:
If you're in fact experiencing pinging and knocking, yes you should upgrade to a higher octance, and yes, it will make the car perform better. As far as what exact octane to use, use the lowest octane that eliminates the pinging. Anything higher and you're just wasting money.


No it will not make the car perform better in the "true" sense of performance increase.

It will get back some of the lost power the "knocking" is taking away from the engine but it Will Not add power above what the engine had to begin with.


Adding octane Does Not add power.

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.