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103 Posts
Discussion Starter · #1 ·
We have been getting very poor fuel economy out of our 2001 Mach Z. The plugs are always black and sometimes foul.

I also just installed Vforce reeds and was thinking of lowering the clip one notch to try and lean it out.

Can anyone tell me how much of a diffrence one notch will make. And after I do it how will I know my sled is running safe. Can you just do a midrange run and check the plugs.

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