Setting the gear and tire size to the correct numbers will allow the computer to make accurate shift points.
Neither will ALTER the shift table.
Hypertech is a great tool, if you understand what it does. It reprograms the engine tables for better performance, and allows you to set your gear tire options.
AEV, another excellent tool, allows you to set your gear tire options, along with few others handy features, like tpms, and DRL's.
The AEV does support 5.38 gears, but I have sold my Hypertech (due to supercharging) and can not confirm if it supports this ratio.
An often overlooked portion of the tire setting is that people DON"T read and try to set the tire size according to the sidewall. This is NOT correct, and you must measure the size of the tire by doing a rolling measurement and divide by pi. eg. my BFG KM2's are 37's but at my psi, doing the rolling measurement, the correct size is 35.5" This fact is all over the forum, but often overlooked. Then you get people unhappy because the programmers are not working.... when really they have used bad info for the input.
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Native Floridian = MUD
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