[TommyV9]

My e90 has a JB4 installed and I did an MHD BEF earlier this week. Per the instructions I updated the firmware for the JB4 prior to the flash. Unfortunately this later firmware eliminates the auto clearing of the codes for a catless downpipe.

I've done a bunch of reading and found a couple places where is was suggested to just code out the diagnostics in the .bin file using TunerPro. I went in and did this, but would like confirmation from someone that knows this stuff that this will work and won't screw anything up. I went into the .bin file and under Toggles>Diagnostic Codes>29F4 (Cat Conversion Bank 1) and 29F5 (Cat Conversion Bank 2) I changed the 56 to 00.

I'd put up a screen shot, but don't know how to do that, LOL!