Has anyone got any specific details on the secondary openings or the low power map in general outside of it being apparently limited to 75% power?

Recently i started experimenting with the low power mode to see if i can still mess with my friends busa on a low power setting , though through my messing with said mode i've come to the conclusion that it still boogeys properly quick and is actually setup in a very clever fashion.

following this curiousity i did a single run on said mode and i severely doubt the 75% power number. but the friendlyness in first has spurred an interest in blending the maps together to keep the smoother power curve through most of first and ramp it in where i can use it.

ive heard of people doing this but never saw the value until i needed to actually be consistent lol.

* Last updated by: killernugget97 on 4/23/2026 @ 5:00 AM *

Has anyone got any specific details on the secondary openings or the low power map in general outside of it being apparently limited to 75% power?

I got nothin' but it would be interesting to
see the results.

I had A, B and C mode on my Gen2 busa since 2009. I left it in A mode, full power. Yeah, you can tell the difference but if you learn A mode, you know what to expect. I rode in a downpour in A mode. I don't see anything wrong with being extra careful by using the lower power modes but it's not hard to do with your wrist.

i've been pretty much using this bike as a daily commuter / giggles bike for the last 3 years and never saw a reason to consider using low power outside of this sudden bout of testing. the bike is smooth enough in normal operation to not need it , but in a race setting the quality of my launches swing like a pendulum mainly due to me getting too happy and riding out wheelies.

side note though is i figured out the bike won't let you try to change modes while under a certain amount of throttle but cruising at speed you can change it to your hearts content. the bike suddenly lulling and rising in power from me spamming the power mode buttons is an amusing observation (AFR also fluctuates from this).

i've been pretty much using this bike as a daily commuter / giggles bike for the last 3 years..

Who are the ecu flashing guys that frequent this forum? Romans does flashes right? Who else?

Romans was the only tuner you should trust who regularly participated in the forum. It's been 16 years. He will pop up every once in a blue moon. I think he's totally out of the tuning game at this time.

When I had my bike built by RCC turbo's late 2016 Rick Romans did the flash for me. I've since had a second ECU flashed by Richard Peppler at RCC turbo's who developed his own flash with a safer soft touch rev limiter. I keep the Romans flashed ECU as a backup but have never tried both on the same day under the same conditions. I'm quite sure RCC will still do a flash though I'd have no problem trusting either one.

Daily riding in Colorado has me using "low" power from to time - mainly after a rain or in the winter (yes, I all winter except on snow days). Traction control set to 3 for those conditions in hopes/prayers the cold & wet tires keep their traction.
So far so good, but looking at this I wonder if it really truly matters that much. Maybe its just a placebo effect?

I'd say if you're operating the bike according to conditions, you're already doing what the nannies do. What I'm saying is, if you don't feel the nannies come into play, you're probably already taking care of the situation by yourself. However, there's always that time when you're caught off guard where the nannies stepping might save you. Just some thoughts, I pretty much only ride in ideal conditions.

@ Rook -
While i'm inclined to be in complete agreement with you, I can say I appreciate Kawas "nannies" when things are less than ideal - at least the ones that our rides are equipped with - and they have likely kept me from putting mine down a time or two. Some of the more advanced systems on other rides, not so much. I do like the fact we can basically turn off these tools, and for the lions share of my riding they're not active, save the ABS, which has definitely been a life saver due to stupid cagers inattentiveness.

I've since had a second ECU flashed by Richard Peppler at RCC turbo's who developed his own flash with a safer soft touch rev limiter.

I found this on 'Soft touch' Reve limiter, is it correct,
and do you have anything to add to it, anything to elaborate on,
does the 'soft touch' somehow change the characteristics of
our stock rev limiter?

The Soft Touch Rev Control is a device used in ignition systems to limit engine RPM by dropping the spark to certain cylinders when a set RPM is reached, ensuring smooth operation without backfires.

* Last updated by: Stratovarious on 7/31/2026 @ 10:21 AM *

I have no way of knowing exactly what RCC's flash is doing but I believe he's also adding fuel to cool the cylinders at the same time. His flash is designed for Turbo applications.