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Old 01-09-2005, 11:25 PM   #1
gambler150
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Join Date: Mar 2004
Location: south carolina
Posts: 4
High Voltage hei coil and modules

Will changing from a factory coil and module on a 355hp crate motor to a proformance coil and module make a big difference. Also wondering if it would require a hotter plug. I'm trying to squeeze out all the power I can without switching to MSD and external coil. Any help or suggestion welcome.
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