1995 c4 hypertech
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Joined: Aug 2012
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From: Colorado
1995 c4 hypertech
I recently purchased my second vette. It's a 1995 base coupe. Not knowing what has been done to this one I have changed the plugs to ngk iridium, new wires, slp blackwing, cold air tuned MAF, and got a hypertech power programmer III. After installing the performance tune without really tweaking anything I didn't notice any change at all. In fact it seemed like it lowered power a little. So I went back to the stock setting and now the speedo doesn't seem to be as accurate. Does it take a while for the computer to get back to normal? Or is it possible that it messed something up. I don't have a scanner and was wondering if I take it to chevy can they or do they tune the ecm and if so should this be done before using the hypertech. I'm really new at this.
