Thanks for the welcome. That is impressive mileage for your GSR. Nice driving.
I upgraded from a ceramic 4-2-1 header to a stainless steel 4-1 header with larger diameter piping. However I did so many things at once to fix and tune-up my car along with changing my driving habits that I cannot attribute any one factor to the increase in mileage. I am currently running some fuel system cleaner through the car and making any effort to drive slower than on my last tank, so we will see what happens. I really don't know what to expect yet because I only fixed everything completely early on during my last tank of gas in which I achieved 41.49mpg.
I completely agree with you on the motor swap, however it is nice to have the ability to go fast at certain times. If I can achieve 45+mpg and run less than 15 seconds in a quarter mile, I will be very excited. Will it happen, I'll find out.
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