Go with the TwEECer if you have the time to invest in it. I think you'll get the best tune that way since you can tune for driveability as well as WOT, but it takes a lot of time datalogging, making adjustments, and data logging some more.
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1998 Mustang GT Coupe - World's Slowest Racecar
2005 Toyota 4Runner SR5 V8
2013 Volkswagen Jetta Sportwagen TDI
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