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  1. What would cause a lower speed per rpm on a taller tire?

    2020 Supra on Ecutek Stock Transmission 285/35/19 MP4S @ 36psi (26.9") So based on the OEM gear and diff ratios and tire diameter (26.6"), at 7000rpm, 4th should hit 102mph and 5th should hit 133mph... however, all my data logs show me at a much lower speed, 98mph @ 7krpm in 4th. Each log has a...

  2. Useful EcuTek RaceROM Custom Inputs? Suggestions?

    I'm going to be changing to a new tuner and having a new tune made from scratch here soon. I'm the type of person that likes to play with different small adjustments if possible and datalog to see the effects. I used to tinker w/ my AEM standalone on my MKIV Supras in the past to dial in an...

  3. Visconti Flex Fuel Issue - Ecutek Gauge Shows 0% & Limp Mode?

    Hello world, I have a 2020 Supra with the Visconti flex fuel kit and a custom Ecutek tune. While doing a WOT pull in auto mode, my car hit fuel cut and backfired loudly on a 3 to 4 upshift. The car went into limp mode and my Ecutek software ethanol gauge and hijacked torque gauge on the...





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