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I like both the EWP and UD pulley. The EWP did not make any noticeable difference, but it is nice to have the option to run it with the car off. I wouldnt pay more than 400 bucks if your looking at getting an EWP. The UD pulley made the car rev up faster, idk if power was gained from it. Its an ASP 15%, aluminum.
Both these together do come with a price, with just bolt ons and the stock idle, I was having charging issues where the battery would dip low at idle. I now have the idle rpm raised for the cam and all the charging issues are gone.
I see the EWP as a convenience and the UD pulley as a performance mod.
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1999 C5 FRC: 12.7@114
2008 TBSS: 12.48@108
2017 Silverado 2500 do you even lift breh?
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