Coding Thread
Also, I used DIS on both the e53 and the e46 for testing and and calibration. I imagine some of the other tools in the standard GT1 software suite selling on eBay would work on the e53 as well. They are both from the same generation and that suite pretty much covers all of them from that era IIRC.
Like I said earlier, the E53 shares a lot of its electronics with the e39. Even some of the suspension parts are very similar
Maybe you can check a couple of e39 forums...
Dinan CAI &Throttle body, ESS Tuning TS2, Bimmerbrakes gen3 headers, UUC SSK & DSSR. Achilles oil pump, VAC oil pan baffle
M3 Motor mounts, UUC Trans mounts, Modified clutch style LSD 3.15, TMS front subframe reinforcement, Koni Yellow sports,
H&R sport springs, UUC sway bars, BMW Perf. Rotors, UUC SS brake lines, Hawk HPS pads, CSL replica wheels,
Rotora strut bar, FXR HID conversion, M3 Mirror conversion, BSW stage 1 speakers