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Hi Rick, Charles Warren bugging you again :) My only local gas station that supplies 91 octane is now only offering 90, so I'm stuck i guess. What issues if any will this cause? anyway around it? I've read a litytle about Torco fuel additive, is this a viable option? Thanks you for your time! Charles
 

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I would use torco or a octane booster with the 2.80. 90 octane and a 2.80 pulley isn't good. I feel you would get better perofrmance with less boost. With a 2.80 and 90 octane I'd have to give you around 17-18 degs of timing and that would kill the performance. Rather see you with a 3.10 and 19-20 degs timing and making safe power. Give me a call and we can discuss it futher.

Rick
 
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