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Re: Needle shim modification
Quote:
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Originally Posted by bonehead
I did my needle shim and installed a 140 main jet and my milage droppped 10mpg. Don't know what the deal is. Thinking about reversing the procedure to gain back my mpg.
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A few others have had a similar experience but don't give up until you've run at least 3 tanks through.
What ELSE have you done?
16T
K&N
muffler
????
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