Meh! - - - miles per gallon is meaningless - - when you ride a Slingshot its all about Smiles per Mile. If you use a few more gallons but get a bunch more smiles then all is good
Understood and agreed Edward Neal ! My interest is not in fuel economy but rather in self-justification of the expense to improve the performance of something I already love to drive. If I know, or believe that my mileage will improve by X mpg, then the accountant in me will determine that I'll break even in Y miles. At the end of the day it doesn't actually matter since I've already decided to get it done. Like you, I'm just trying to understand and learn as much as possible.