it's a mx6 tranny i had a reciet saying that was installed my old ZE i've raced my brother in his ZE PGT.. his gear box is alot stronger in lower gears mean while the 6 gear ratios are different. i've also raced him top end & the 6 tranny serpasses the PGT tranny.. but odd you already know this my tranny boggs in very low rpms mean while his grabs very nicely in low gears.. right now i'm in my 97 & it does the samething in low gears boggs abit..
The kph signal comes from the gearbox, and will not matter what size wheels you have fitted. Thats why you need to ensure you get the circumrence as close as possible when fitting larger rims and dessing them with the proper sized wall tyres .. 15=55 16=50 17=45 .. There are calculators on the net and some alloy wheel sites to help you obtain the nearest figure to stock.
I think you will find that 17's on a 45 are just a little above the stated speed on the dash, and 40's are below the stated speed.
Bud, the size of tyre will not affect the speedometer, only the actual physical speed. The Speedometer gets its readings from the gearbox sensor, of which is a gear reading how many times its spins multiplied by the selected driving gear, thats whats outputted to the end of the axles and to the wheels.. what the wheels do with it then is out of the control of the speedometer.
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