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In this video I'm running a custom 91 track tune and 19t turbos. The xHP stage 4 OTS transmission tune ran perfectly. I chose not to have the kickdown switch toggle the max shift rpm and I also chose the higher transmission line pressure in the xHP tune app. A very small (.75) meth nozzle with a 50/50 water methanol mix has eliminated the 3rd to 4th shift misfire I was previously experiencing with the OTS transmission tune. The smaller nozzle (Snow Performance N0075) still provides some much needed intercooling.
I left the track early due to the brake pad sensors giving a false error code.
Update: I cut the brake pad sensor wires and soldered them together to eliminate the false brake pad sensor codes in the future. Here a video on how to bypass the sensor and reset the error code. • E90 BMW Rear Brake Pad...