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OTC Octane Boosters wont do much, if anything, to increase your octane OP...
If you want a REAL octane increase, and have no access to race fuel or higher than 91-93, go order a bottle of TORCO race fuels Accelerator. Race fuel concentrate, not octane booster. It's cheap, and it really will increase your octane up to 105 depending on how you mix it. Try that and report back...
Also, I know what you are talking about with how the car feels. Once I upgraded the downpipes it went away. You also need to upgrade the intercooler if you expect to achieve back to back power pulls consistently.
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