When factory electronic fuel injection (EFI) first hit the Mustang in the 1980s, many enthusiasts felt it would be the death knell for performance. Little did any of us know at that time that there ...
Your car's engine needs a very specific diet of air and fuel to do its job, and it's the fuel pressure regulator's (FPR) job to feed it the right amount. The gadget is relatively tiny and can fit in ...
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