This is v18. It feels very rough down low. 13 feels better down low.

I just installed the xHP stage 3 flash and I know I'm supposed to check a box somewhere in my build sheet but I can't find the option anywhere on my mhd app. The car feels good but the throttle blips seem to be a bit out of time with shifts. Will checking that box help and if so where do I find it? Thanks for all your help. The car has been running great with the exception of a few throttle closures here and there. Still get a boost deactivation every once in a while also but no codes. Turn the off then on again and all is good. What do you think that could be?

Can you help me out? I'm lost here.