I just installed my JB4 tune (G5 board) and catless downpipes a couple days ago. Car felt amazing, but eventually the SES light appeared and then I had/have problems with limp mode (even after just one WOT). My car is running very poor at the moment. I just found out about the BMS DP Fix V3, but noticed that many of the posts related to that DP Fix version were from a couple years ago. I don't believe that I saw a recent thread for the BMS Fix. Would I need to purchase the DP Fix V3 or am I able to fix my SES and limp mode problems by just adjusting the JB4 settings?
