Do you need to run 7mm Venturi? Try a 6mm
I ran the 2045 pipe,definitely got more fuel mileage with a jp4 pipe (great all round pipe)
Personally I think you would need to be running quite lean & in perfect conditions to get 10 minutes from that engine
My opinion is until a driver is able to drive like the 'fast boys' no point in leaning a motor out for optimum mileage,as I say just my opinion.
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