jake63 Posted February 27, 2008 Report Share Posted February 27, 2008 Has anyone used one of these Mac performance chips from seller Velocityinc on ebay? I have a 1994 3.4 Olds Cutlass and was wondering if these things do anything. They are cheap enough at $25 plus $6 to ship. Please respond if you have any experience with these good or bad......Thanks Quote Link to comment Share on other sites More sharing options...
ns87 Posted February 27, 2008 Report Share Posted February 27, 2008 Don't waste your money!!! Quote Link to comment Share on other sites More sharing options...
88red4cyl Posted February 27, 2008 Report Share Posted February 27, 2008 Don't waste your money!!! x2 Quote Link to comment Share on other sites More sharing options...
GutlessSupreme Posted February 28, 2008 Report Share Posted February 28, 2008 x10 it's a 10 cent resistor in a nice box that tricks your ECM into dumping too much fuel into the motor, which will likely make it run worse and will kill your gas mileage Quote Link to comment Share on other sites More sharing options...
jake63 Posted February 28, 2008 Author Report Share Posted February 28, 2008 Thanks for the quick replies. Saved me from burning thirty bucks. Quote Link to comment Share on other sites More sharing options...
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