Thx Dean,
This is a direct quote from the owner of the company that makes the ecm for Buell & EBR, they've been at it since 1999.
"Tim Blomenberg to EBR 1190 Owners Group
3 hrs · Decatur, IN ·
EBR owners, listen up. This is not a sales pitch, but an attempt to get the truth out there to keep you and your bike on the road! I've seen quite a few posts lately about guys that have changed their exhaust, and continued to run the stock ECM or even a performance ECM not properly matched to their replacement exhaust (be it secondary muffler delete, Adams, HMF, APH, or others). The owner thinks it's "safe" because the ECM will adapt to the new exhaust as they ride. News flash: The stock ECM for the 1190RX/SX does not "learn" in terms of Air / Fuel Ratio (AFR) as Buells do (to some extent anyway). What you see when you first ride it (on road or dyno) is what you will get consistently (except for changes in engine and air temps, ram air, etc.). Our performance ECMs don't learn AFR's either; they are set up to perform consistently and not change as you ride. What this means is that if your bike is lean (or rich) in spots when you first run it on the dyno, the ECM is not going to fix itself over time! Furthermore, on a dyno, you might be looking at AFRs at Wide Open Throttle (WOT), but you also need to consider part throttle AFRs. The fuel maps have 384 independently-adjustable values for each cylinder. WOT only accounts for 24 of those. A good tune consists of a complete fuel remap, not just WOT! But even more importantly, don't forget about spark advance! The advance curves on the stock ECM are much different than those on our performance ECMs. When you change the pipe, you radically affect the engine's optimal spark advance, and if you don't correct that quickly, you WILL do engine damage from too much advance, even at part throttle. A performance ECM developed specifically for your exhaust configuration is critical to engine life, and it's a small price to pay compared to an engine rebuild!
— at Intelligent Design Solutions (IDS)."
