They have programs for different compression, with or with out cams, different injectors and different MAF. I have the JWT Basic tune. Specifically for a slightly modded GA without turbo. But then they also do have lots of programs for a turbo too I think must people who use the JWT are either turboed or are running cams. I just happened to be one of those that wasn't. But I love my ecu and will miss it. But SR's are calling.
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