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Old 09-24-2020, 08:29 PM   #3
Brand: Thor Motor Coach
State: Texas
Posts: 59
THOR #20141
Thanks. It's a 2017 on standard F53 chassis. D321 is what I've got.

Originally Posted by Pete'sMH View Post
What year is your ACE? Or more specifically, does it have the 5 or 6 speed transmission? I bought the 5 Star for my 5 speed coach and it did help with the shift points, reducing the downshift for every little hill. Wasn’t a magic cure all though. I did not find any advantage for the engine performance. I subsequently bought a newer coach of similar size to yours with the 6 speed transmission and I do not plan to purchase the tuner for it.
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