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      04-16-2019, 08:06 PM   #2
XutvJet
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Drives: 2011 Cayman Base, 2016 M235
Join Date: Mar 2016
Location: Kansas City

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Keep in mind that turbos are load dependent and 1st and 2nd gears have a lot of torque multiplication from the gearing, thus, those gears do not generate much load on the turbo so they do not generate near as much boost as 3rd and beyond.

1st gear will likely not generate much boost because:

1) The torque multiplication of 1st gear
2) Shortness of 1st gear vs time in gear vs time needed to load the turbo and build boost

For example, my stock M235 6MT with just a catted DP and no tune, generates around 6-7psi in 1st, 7-8 psi in 2nd, 9-11 psi in 3rd and beyond, depending on density altitude conditions.
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