We worked on Alex M’s 2004 Z33 ‘vert about 5 years ago and it is a familiar Z sporting Central20 bumpers, 5Zigen wheels and a host of bolt-ons. Alex travels around the world on business frequently so his car sat idle for a long time. With just 56k miles on the clock he brought it to ZCG for a thorough once-over.
A full 60k-mile service was performed, new battery installed, new thermostat and we sorted out all of the issues. First, the car was lowered without adjustable camber arms so we installed SPC f/r control arms and Whiteline diff bushings. A full alignment followed:
A few other issues were corrected like a failed oil pressure sending unit, passenger seat problem and blown stereo fuse. The Stoptech brakes were old/weathered since their install in 2004. We upgraded them to yellow ST40/ST45 calipers, turned rotors and our favorite 309 pads:
The 5Zigen SMB wheels were re-refinished and wrapped in new Bridgestone S-04 tires:
The Z had many bolt-ons but had never been tuned so we put it on the dyno. Baseline numbers of 234hp/230tq to the wheels indicated it was low on power. Rob UPREV tuned picking up power everywhere in the rev range for a total of 254hp/257tq to the wheels, gains+20hp/27tq. This is a great example of having a proper tune to maximize gains from your bolt-ons whether it is DE, Rev-up, HR or 370. Alex is happy with the final product:
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