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ECU reflash

L

Larry Vance

Cruisin' Guzzisti
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Considering the ECU reflash for my '13 V7 Special with factory exhaust. Can someone explain what improvement this would provide and what are the experiences of those with same bike/exhaust have experienced. Thanks
 
Well, let's see where to start. Low RPM surging is gone. Put it in first gear and putt around a parking lot with no problems at all. The bike runs way cooler. No hesitation anywhere when you apply the throttle. It just goes. Cold starts are so much better its like a completely different bike. Start it, put on your gloves and ride off. That's it.
 
New here so maybe a noob question.
Would the benefits be similar with a 2009 V7C?
I have installed a Fatduc and it helps but I know an ECU adjustment is a much better way to go, if the results are worth it.
I installed and flashed a PC V on my FJR 1300 and it made a HUGE difference to low speed throttle control.
However, $350 USD is $460 CDN and that's a chunk of change if the difference is minor on the Guzzi.
 
Keith Broughton said:
New here so maybe a noob question.
Would the benefits be similar with a 2009 V7C?
I have installed a Fatduc and it helps but I know an ECU adjustment is a much better way to go, if the results are worth it.
I installed and flashed a PC V on my FJR 1300 and it made a HUGE difference to low speed throttle control.
However, $350 USD is $460 CDN and that's a chunk of change if the difference is minor on the Guzzi.
Click to expand...
I installed the PC V and auto tune with the wide band O2 sensor after Todd did the re flash on my 2010 V7C. The fueling was perfect. Well worth every penny.
 
I have a PC-V and autotune installed on my 2011 V7R; have not had the Guzzitech reflash performed however. Like mwrenn, the transformation of the bike by the Power Commander is quite noticeable. The cold bloodedness of the engine is gone and the power is smooth throughout the useable powerband. Bluing of the chrome on the exhaust caused by the factory lean mixture has been stopped in its tracks.

My fuelling modifications pre-date the availability of a good ECU reflash from Todd. My advice would be choose one or the other; both are not necessary. The reflash is the better of the two choices IMO.
 
rbm said:
I have a PC-V and autotune installed on my 2011 V7R; have not had the Guzzitech reflash performed however.
Click to expand...
How did you eliminate the stock 02-sensor input? Did you then add a second 02-sensor bung for the AutoTune? Or are you referring to the 02-optimizer handling low speed fueling?
My ECU flash is a component allowing full fueling access to the ECU via PC-V (and AutoTune when applied). The ECU flash is a crude/broad brush stroke and works pretty well. The ECU/PC-V/AutoTune is a fully dynamic system, from idle to redline at all throttle positions. While either is good, the full kit is miraculous as to real-time AFR for *each* engine. It's complex fueling science made easy.
 
To answer your questions, I removed the OEM O2 sensor from the existing bung in the crossover tube and replaced it directly with the Autotune's wideband sensor. I did not add a new bung to accommodate the second sensor. I wasn't referring to the O2 optimizer because I do not have any experience with it.

What has prevented me from pursuing the ECU reflash to date is my geographic location, my wallet and my priority list. I am probably not getting the full-on benefits of the fueling kit that currently installed on my bike by avoiding the reflash, but I several issues with the motorcycle's suspension that take precedence. Right now, for me and my riding experience, the fueling is working. Once those suspension issues are resolved, the next step for me is probably a reflash of the ECU to realize the full potential of the bike.

I don't know if I speak for others here but I continue to struggle to understand the various fueling options available to me through GuzziTech and how they work. What I believe would go a long way to helping people like me is to author a whitepaper on the subject and make that paper available here. It could start by explaining the limitations with the OEM setup and then go on to describe how the Guzzitech options enhance the engine performance, and how to combine different solutions to achieve balance between performance/longevity/cost/complexity. My lack of understanding is rooted in my lack of knowledge about the details of EFI. I hope that you might consider this whitepaper suggestion.
 
rbm said:
To answer your questions, I removed the OEM O2 sensor from the existing bung in the crossover tube and replaced it directly with the Autotune's wideband sensor. I did not add a new bung to accommodate the second sensor.
Click to expand...
Then you must have a Check Engine Light on, and poor fueling at and off of idle. The 02-sensor cannot simply be unplugged. There's 16+ pages on Q&A in this thread on the subject; https://www.guzzitech.com/forums/threads/guzzitech-power-commander-v-information.2686/ -- feel free to write me direct email with any other questions; Todd at GuzziTech.com.
I understand your dilemma, as fueling/flow (intake/exhaust), suspension and front brake is the weakest link of the V7 line.
 
Thanks for the pointer, Todd.

I have not got a Check Engine light on because I used GuzziDiag to configure the OEM firmware from reading the OEM O2 input. You may be correct in your assessment of my off-idle fueling but I have no means to measure and assess the situation. An ECU reflash is in the bike's future -- "when" is the unknown quantity.
 
rbm said:
Thanks for the pointer, Todd. I have not got a Check Engine light on because I used...
Click to expand...
Sure, and if you've disabled the 02, then it is getting full access, good. I do other things to enhance other parameters like cold start and power on the ECU. If you're happy, no need to do anything else. Enjoy.
 
So, Todd, what would be the benefits (if any)of an ECU re-flash on a 2009 V7C?
I'm really not interested in changing intake and exhaust to squeeze out every drop of power.
Got other bikes I have done that with.
Just want a smooth running bike that is not so lean.
 
Keith Broughton said:
So, Todd, what would be the benefits (if any)of an ECU re-flash on a 2009 V7C?
I'm really not interested in changing intake and exhaust to squeeze out every drop of power. Got other bikes I have done that with. Just want a smooth running bike that is not so lean.
Click to expand...
Getting people to do reviews is one of the toughest things, though everyone seems quite happy with it. It does exactly what you are looking to do. Power gains aren't had just by fueling necessarily, so that's not why you do it. It's all very well covered as noted above, here; https://www.guzzitech.com/forums/threads/00-current-15m-15rc-reflash-now-available.4638/ -- and as the one review on the Store page; https://www.guzzitech.com/store/product/gt-rx-15mrc-re-flash/
 
Want a review? I'll keep it real short.
My bike runs way better than stock from start to red line after a GuzziTech re-flash.
 
Todd has reflashed my 2007 Norge and my 2014 Stelvio. I liked both of them a lot before the reflash. I liked the Norge a lot better after the reflash and I REALLY like the Stelvio better after the reflash. Both seemed to have more power after the reflash but, more importantly, they are much better behaved. It's pretty amazing all of the little annoyances that are present in an overly lean engine. I don't think you even notice some of the issues until they are gone. Todd's reflash will smooth out everything. It will start and idle better. It's power curve will be smooth and predictable. Throttle response will be consistent and predictable. It will run like motors used to run. I can't imagine you will have any different experience with a GuzziTech reflash on your model.
 
King of Fleece said:
Want a review? I'll keep it real short.
My bike runs way better than stock from start to red line after a GuzziTech re-flash.
Click to expand...

I just heard from my dealer that my reflashed ecu has been reinstalled.
Additional information passed to me is that the consenus of opinion of the shop staff is that
the bike run fantastic.

I'm glad they all had a great time finding that out. I hope to get up there tomorrow to find out for myself.

I really should have had that done from the start.
 
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