Picture this: You're in 4th gear at 45 mph and you see that you must merge ahead. One of the worst problems that exists with modern trans shift schedules are the downshifting characteristics. So, to begin our definition of what we expect from our vehicle, we'll look at the deficiencies of the current TCM programming and decide what we want changed. By installing a new ERod engine and transmission and then adjusting the transmission shift strategy to suit your driving style and environment, you can achieve massive fuel economy savings compared to your old carbureted 350 V8 and 3-speed transmission while enjoying a far more satisfying drive. These are excellent goals to be certain, and goals we should only ever try to improve on by adjusting shift strategy based on our own particular driving environment. The factory programs the Transmission Control Module (TCM) for the "average" driver as well as to make certain the vehicle performs as well as possible during the EPA fuel economy and emissions test cycle and to ensure long-term powertrain reliability. The key to tuning your 4L60E transmission properly is defining how you want the vehicle to behave under various driving conditions. After all, if the transmission shifts the same way you would if you were driving a manual trans, we'll, that'd be awesome, and that's what we're going to show you how to do. Automatic transmission does exactly what you want it to do, you may end up loving it as well.
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