This made the wiring job very easy, as I only had to hook up Power, Ignition, Ground, and wire the fuel pump to make the car run. John also
left me wires for the tach and a few other gauges (which may be added later). For the fans, I got a Painless relay kit and wired it to the
two wires that were in the harness.
PCM scanning, logging, and tuning is done via on-board laptop computer with HP Tuners software. I may get
a wideband O2 sensor so that I can more accurately tune the computer for optimal performance. The stock F-body tune ran the car ok, but
it didn't idle very well and was definitely running a little rich. The HP Tuners website has an excellent forum for users and people just
learning to tune. The developers are constantly innovating and incorporating feedback into subsequent software releases, so the product is top notch.
The wiring was the one thing that I was most apprehensive about on this swap. The engine that I bought didn't come with a harness or
PCM, so I found one from a member of LS1Tech and sent the harness to Speartech to have it set up for stand-alone
operation. This comversion consisted of: removing emissions wiring, adding a couple of wires for electric fan operation, adding a fuel pump
relay, wiring in the ALDL port with an LED for the "check engine" light, and putting in a fuse panel for the PCM, injector, and fuel pump circuits.
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Stock 2000 Trans Am PCM |
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Stock 2000 Trans Am wiring harness (modified by Speartech) |
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Painless Performance fan relay kit (FLX-220) |
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