Quote:
Originally Posted by KingLT1
High compression, boost, and pump gas isn't a great combination. These engines won't tolerate more than 12 degrees timing with 7-8psi of boost.That is a good indicator that the compression is too high for the fuel. Switch the fuel to E85 and now you can safely run 20 degrees and the engine is happy. If all you have is pump gas then it needs lower compression forged pistons.
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I always add a bottle of this to every tank of fuel, common petrol in Italy is 95 octane, I always add one of these to improve performance