For flash programming on the xcal2, I have the PRP, and the allowance to program MY cars; to do multiples, I had to send proof of vins and SN's of the xcals, iirc.
You have to have the EEC working enough to remove the tune from it, or you have to send the xcal back to SCT for a reflash to reset/remove the stock tune. And that's expensive.
I had a 97 bird with issues; I yanked the tune to see if it was the issue, and two days later it totally died; volcanoed the cpu.
(That's a highly technical term; the chip looks like it has a tiny volcano in the middle. This is a "non-recoverable error in the industry", lol.)
If I hadn't removed the tune, I would have probably have bought a new Xcal2; it would have been cheaper.
I lost a "Count" on the 5 VIN changes you're allowed to do, so that xcal reads 4 now.
It's a pain to change it out, and you don't want to go back and forth; there's only 5 tries.
Red '96 Cougar XR-7 240k mi. '02 4R70W, PST DS : '03 PI engine, 04 maf, 24lb injectors, 2.5" exhaust, '02 4r70w + Jmod, DirtyD0g TC + cooler + 3/8" lines, 255 walbro fp. Alpine system.
Black '96 Cougar XR-7 (Lazarus) 210k mi PI Intake, '02 4R70W, Jmod, PST DS, GrogTune, Konis, Mark LCA+Poly, racecougar Custom Engine Chain, and JL and racecougar Bracing.
Black '97 Tbird Limited Edition, '02 4R70W, 255 walbro, PST DS, PBR Brakes&SS lines, Toicko Blues & Springs, GrogTune.
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