my mods are in my sig and I just had a 3in all the way back no cat with a dynomax glass pack, is it worth putting anything better than premium in or is it a waste???

 

waste.

 

Waste. The computer in the f-body is programmed(unless programed differently) at (I think) 90 octane. The extra $.05/gal is just a waste of money. Higher octane reduces knock in the engine. Also, the higher the octane, the slower it burns. If it isn't programmed for it, 1) It's a waste; 2) Hurt performance slightly.

 

thanx

 

Yep, waste. Unless you get something to bump up the timing

Wish it was a Ford, I could just turn the distributor.