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I've done most of the mods you've done, and a visit to the dyno gave me important AFR information (I was lean) that I then sent to the software tuner. with the new software, the car is running better now, and there's no CEL. I want to get to the dyno again to see how power has changed and to measure differences in the AFR.
I think both are necessary to get the most out of the car.
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