So I've read most of the various posts on here about the BMS JB1 stage 1 tune for the N63. I had a few questions, just to make sure I understand what I'm getting into:
- This almost seems too good to be true when compared to Dinan's $3k option. Any major downsides?
- The harness looks incredibly easy to install. Basically, install the harness in between the two existing TMAP sensors and tuck the brain box up by the brake booster. Correct?
- If I remove the harness (which, again, looks fairly trivial) is there any trace of the fact I had it installed? Specifically for warranty purposes.