Fuse Pull Only For L99
 

I looked at the sticky and it did not really talk about LS3. I have an LS3 is there a point in doing fuse pull in it, or is it only for L99?

It's for both.

Ok then I will do it tonight

Any other input.

Not sure there is more input to be had. Your car has 2 octane tables. High & low. If you put in low octane fuel or if it detects knock it will drop to the low table to help prevent damage. You will feel a loss of power and it will be more sluggish. Make sure you have high octane fuel in it and do the fuse pull. It will reset back to the high table and that's pretty much it.