Quote:
Originally Posted by txferrari
Whatever you do, don't cheap out one time and put anything lower than 91. I did it 2 times in my Z06 and had to spend $1500 for new cats. I had hella engine knock. I put in 2 tanks of 89 cus I'm an idiot. I had no idea the car was that phinicky.
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What kinda car owner are you??? Why would you ever put anything under 91 in such a high performance car