| have a 90 TT at about stage VIII or so, put down 407 RWHP @ 14PSI and 457RWHP @ 17 PSI last year. Also last year I had my mech remove the old upper plenum and install a polished one I got from Kyle at IPP. The problem: my car wants to idle at between 1300-2000 RPM, all the time, AND now my HICAS warning light is on all the time too. I have seen discussion that maybe the mech got the wiring crossed up? He has since moved out of state and claims he got it "right". By the way, the PS fluid is topped off... Any thoughts/had similar experiences? Lastly, does anyone in the NW Florida area have a solid Z mech to recommend? Many thanks, Mike H 90 TT pearl glo yellow (Blondie)
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