Brazel's Ford V10 Ultrapower Tune - Update!
This is an update to an older post regarding my installation of Brazel's Ultrapower Tune. Originally I installed this tune on my 2001 Itasca Suncruiser with(Ford F53 V10) and could not determine any...
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My guess is it keeps the torque converter locked up and allows the engine to lug down a bit more on hills before shifting.
