Setting my hair on fire.

[Megadan]

Originally Posted by JerryHawk250

It's amazing how much power you can get just from tuning the ECU. I'm sure most bikes are tuned just like cars and trucks. They are tuned for the worst gas out there and detuned even more. I've retuned many stock cars and trucks and it's like night and day after I get finished. Good example was I took my brothers stock Chevy pick up at the track. He made a couple of runs on stock tune and we logged it. From that log I retuned it for 87 octane gas and he picked up a whole second I a quarter mile. A little fine tuning and picked up another half second. That's probably a 60+ HP gain.

Some manufacturers are better than others when it comes to ECU tuning. Honda is fairly notorious for tuning back their engines pretty severely for emissions reasons. Most tuners will tell you all about Honda tuning in the lower RPM range. Usually very lean and with very clunky roll on fuel mapping. Even bikes like the CBR1000RR don't escape some of this, although they are a little better.

They also love their gear restrictions. My bike in the U.S. Market had first and second gear restrictions with the E-throttle, essentially only opening the throttle to around 65% - giving around 100hp peak. Then an RPM restriction in 6th to limit top speed. I had these removed.

Other small things like the mapping for the E-throttle itself. The delay they programmed in is too long, and the subsequent rate it opens is not very intuitive. It makes trying to be smooth with the throttle incredibly interesting. This was also remapped by Guhl, and is now much more instant and linear giving the bike the same feel as a cable throttle.