I know it matters to everyone, but I think it matters more to those of us with less efficient vehicles. I have comprised a few videos to help people with this, explaining how i get my 00 Chevy express 1500 conversion with it's 5.7 vortec to get 19 mpg. when originally the dealer quoted it at 16 mpg, 130k miles ago. perhaps this info could help the rest of you as well.
https://www.youtube.com/playlist?lis...7oSLNaie5hHFgG
https://www.youtube.com/playlist?lis...7oSLNaie5hHFgG
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