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Re: modifying 4.8 vortec wire harness need help.......
Quote:
Originally Posted by brad_man_72
gauges, you have to have the comp reprogrammed to sent out a v-8 tach signal,"
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also most aftermarket tachs have a switch/s to make the tach read 4/6/8 cyl. you can simply put the tach into 4cyl. mode and it'll read accurate, w/out changeing the tach output of the PCM.
Last edited by 68 short step; 05-14-2009 at 11:18 PM.
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