Lost count of the number of maps I've run on HDi's lol... All returned roughly the same MPG for me as well. Favourite has to be JP's S1+, but that may not the best for longevity! I wasn't a huge fan of the Whippy 120, BUT it's been on that car for many years and miles with no fuel system issues even now somewhere around 300k miles...
Thoughts on standard Stage 1 HDI RR Printout
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