[fredm21]

Hi Guys,

I have a 07 335i zf6hp21 and I am currently at 535whp single turbo. I am looking for the best custom settings when doing 1/4 miles and daily on xhp. Im running stage 3 but I know I can get much more gain if I can custom tune my tranny. I made couples of changes yet but still not enough. If you don't mind sharing please.

[Saif2018]

Originally Posted by fredm21

Hi Guys,

I have a 07 335i zf6hp21 and I am currently at 535whp single turbo. I am looking for the best custom settings when doing 1/4 miles and daily on xhp. Im running stage 3 but I know I can get much more gain if I can custom tune my tranny. I made couples of changes yet but still not enough. If you don't mind sharing please.

I'm on the stock twins, have shift speeds and throttle blips almost maxed out and Torque reduction at +18%

Since you are on Single turbo, you will want Torque reduction during Upshifts set at - (sliders pulled to the left to negative values) this will reduce turbo lag post shift, BUT increase load on clutches, which can wear out the ZF clutch pack quicker. You will probably also want Torque limits set appropriately per gear.

For daily driving you will want to play around with the Shift maps to make sure it doesn't bog down too low and shifts to the appropriate gear when rpms drop.