Quote:
Originally Posted by 2sporty
I was not mixing the numbers because I was using the 550hp figure from my own Stage 1 ACN91 S55 dyno.
Obviously, you're correct about the part where you compare the two on the same non-ACN 91 fuel.
My question about the low grade fuel still remains unanswered though -- why is the gap so high between ACN91 and 91 for the S58, but not the S55?
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Where are published figures on S55? ACN91 vs 91?