Here's what I suggest to those in this position.
If you get a mail order tune we are able to pinpoint where your car probably is with the mods that you have done to your car. Once we do this, if you are finding that you want a more accurate tune, take your X-Cal2 to an authorized SCT Dyno Dealer, and run your car on the dyno. You only pay for Dyno fees and the tune. No extra charge for the programmer. They dyno operators can use the files of the tuner on our end to fine tune your vehicle.
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Chris "Shambles" Chamblee
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