• Welcome to the Yamaha FZ1 Forums. Member registration disables ads and allows you to post and share. Register Here.

ECUnleashed ECU Flash

I am being very factual with this, not subjective. So far this is significantly better than the 2006 flash. Not sure what year you have but the fuel accuracy is much better than the stock 200



While your opinion is an IM & QS you'd still need to add a PCIII and an FCE. If you want a bunch of stuff hanging off your bike by all means go do it.


The below is not directed at you Kneedown.

I'm also very close to telling the whole lot of you to pi$$ off. I'm just blown away by people who have no experience with something jumping to conclusions and coming off as the expert. I've tried to be very transparent, frank and objective but apparently if the whole thing is not summed up in a single word; "its great" or, "it sucks" no one seems to get that.

Let me finish testing the damn thing before a conclusion is drawn.

Why i say this, an IM will let the bike rev higher, adjust timing, smooth out fuelling and give nice low end gains as documented.

Mate i have a ZX6r with a race ECU that has been developed by Kawasaki so i know a little about this process. It seems people are way to sensitive here, be honest the above was directed at me for having an opinion and questioning the logic pros & cons instead of posting warm fluffy nothingless comments. I have never been aggressive or posted anything offensive, if anything i have encouraged you. These forums are about debating these topics? aren't they?. Dont worry i will not post anymore. Good luck
 
Last edited:
Here’s the verdict, bottomline up front, outstanding mod.

Today I rode about 200 miles testing. I started with the reflashed 2006 ECU, riding, stop and go, freeway cruise, and my “secret” high speed test track where I can ride at 100+ for 15 minutes. Fuel cut is gone, and minute throttle input is evenly metered in; very carburetor like. As posted earlier 1 thru 3rd is totally woken up.

Then I stopped and changed the 2006 ECU out for my 2010 Finish ECU. Damn that 2010 map is a nice one. Very similar to the reflashed ’06 but it lacks the snap that the reflash has, especially in 1st to 3rd gears. With this ECU I rode similar roads, stop and go, freeway cruise, and banzai runs. It’s very nice but not as urgent as the reflash. Fuel cut is a little more pronounced in this ECU but not bad at all. This particular ECU has not had a lot of fuel cut, but was not as smooth as the reflash when gently dialing the power back in.

For the third test I loaded my custom tune that AF1 wrote for the 2010 ECU. Mid range picked and the top end was much sharper. This map trims about 15 to 25 points of fuel out of the higher rpms and open throttle positions, hence the sharpness vs a fuel soaked mush.

Then for the fourth test I loaded a zero map and reinstalled the 2006 ECU. Nice. It was like putting on your favorite pair of shoes, it just felt right.

If you have a 2006 this is an outstanding mod and will solve your throttle snatch problems.

I’m going to be on the road for a couple of weeks and I’ll try to get the bike dropped off for dyno testing and a tune while I’m gone. I’m curious to see how the trim values differ from the 2010 ECU set up.
 
Last edited:
Pete thanks for that testing. I wonder how much additional HP you are getting now in the first three gears? My bike will power wheelie in first gear, but not second or third.
 
Pete thanks for the report and really, thanks for switching back and forth between the ECU's. That is a PIA. I have been curious about the restrictions in 1-3 gears since most corners are taken in thous gears. I'am happy that you are happy. I hope they cut you a bit of a deal for being the first for the 06 (most needed) and I thank you for being a analytical person with athirst for the truth, it benefits us all and every one here should be great full for your professional opinion.:cheers::cheers:
 
Pete thanks for the report and really, thanks for switching back and forth between the ECU's. That is a PIA. I have been curious about the restrictions in 1-3 gears since most corners are taken in thous gears. I'am happy that you are happy. I hope they cut you a bit of a deal for being the first for the 06 (most needed) and I thank you for being a analytical person with athirst for the truth, it benefits us all and every one here should be great full for your professional opinion.:cheers::cheers:

I rerouted the ECU so it now sits on top of my battery. You're right, pulling the tank and airbox is a PITA. Now I can swap out in a couple of minutes. Heck it took longer to start the computer to remap the Power Commander and swap ECUs. :tup:
 
Sounds like a good mod Pete. Thanks for taking the time out to compare ecu's.
Im pretty happy with my 2010 and like you have no issues with fuel cut.
If i hadnt already bought a pvc and had a custom tune then i would have jumped at this.

Sent from my GT-I9100
 
Sounds like a good mod Pete. Thanks for taking the time out to compare ecu's.
Im pretty happy with my 2010 and like you have no issues with fuel cut.
If i hadnt already bought a pvc and had a custom tune then i would have jumped at this

Yea, I'm in the same boat. I already invested in a PC V and FCE so at this point I'm keeping what I have for now. However, I would love to lose the speed restrictions in the first three gears :)
 
How would the reflashed ECU work w/a stock exhaust? or just a slip on? I'd like my '08 to run better below 5000, but don't want to spend all that much, due to looking at buying a track bike.

Thanks!
 
THANK YOU !!! for the review of the flashed ECU ! :unworthy: Now that the restrictions in the lower gears are gone and the fuel cut is fixed do you think the Flashed ECU could offer even more with a pcIII custom tuned on the dyno ? Sounds like the bike is running great now but I wonder if it has even more to offer.
How do the lower gears in the flashed ECU compare to the 2010 ECU with the PCIII ? Feel like a huge difference ?

I'm thinking hard about a flashed ECU in the spring. Feel that if I can avoid hacking up my wiring harness with a FCE and get full power in the lower gears it will be worth it.
 
Speed restrictions, :shaking head: I think you are referring to the retarded ignition timing ? It will still do what it will do in the first three gears just a little slower. My question is that with a PCIII and Ignition module would this flash do any more than what I have ? When I put the Ignition module on the difference in the lower gears was very prominent.
 
Speed restrictions, :shaking head: I think you are referring to the retarded ignition timing ? .

Guess you cant read ?? :shaking head::shaking head::shaking head:: I never said " speed restrictions "
I said "RESTRICTIONS" and was referring to the timing.

The ignition module can't give you full timing in the lower gears because it would then be too much timing in the upper gears.

Unfortunately the ignition module on the FZ1 can not program different timing for each gear separately. The FZ1 does not have a traditional gear position sensor to make that possible.
 
THANK YOU !!! for the review of the flashed ECU ! :unworthy: Now that the restrictions in the lower gears are gone and the fuel cut is fixed do you think the Flashed ECU could offer even more with a pcIII custom tuned on the dyno ? Sounds like the bike is running great now but I wonder if it has even more to offer.
How do the lower gears in the flashed ECU compare to the 2010 ECU with the PCIII ? Feel like a huge difference ?

I'm thinking hard about a flashed ECU in the spring. Feel that if I can avoid hacking up my wiring harness with a FCE and get full power in the lower gears it will be worth it.

Thanks. Yes adding a PC and a custom tune will help a little more. There is a great article that Sport Rider magazine did about the R1. It really explains how a piggy back can work with the flash. Yamaha YZF-R1 Graves Exhaust, Power Commander V and ECUnleashed - Sport Rider Magazine

When I had my Buell 1125R it went through 4 flash updates. Each one was a little better than the last. I had two PC maps made as the flashes came out. Peak power was about the same, it got a little better than the subsequent flash and a tune, the big difference was in how smooth the bike ran. Once we had everything sorted it was perfect. Granted that was 18 months of work, but we got there eventually. Too bad it kept eating clutch slaves....

The FZ is very similar, each ECU release is better than the last, and a tune helps refine the ECU. With the reflash you leap-frog all those years of ECU updates, gain additional benefits, resulting in a very nice baseline ECU. The better the baseline, the better the tuning session will be. Remember that PCs and FCEs can only do so much and they are interecepting the signal from the ECU, not originating the signal.

I'll get the bike dropped off this week for dyno testing (I hope). I'm curious to see how it turns out and what we learn.

The reflash vs. the 2010 ECU are very similar to one another. The difference is the reflash has better response, 1 to 3 being faster, and smoother throttle input during maintance throttle. If you've ridden the '06 FZ1 or any year FZ6 you'll know what I'm talking about. Input with those bikes is very abrupt.
 
Speed restrictions, :shaking head: I think you are referring to the retarded ignition timing ? It will still do what it will do in the first three gears just a little slower. My question is that with a PCIII and Ignition module would this flash do any more than what I have ? When I put the Ignition module on the difference in the lower gears was very prominent.

Restrictions are from the secondary butterflies too, the reflash removes those. I've not used an IM so I can't fairly comment on it. I assume the difference would be the same because the is only one "optimal" timing, and OEM isn't it.
 
How would the reflashed ECU work w/a stock exhaust? or just a slip on? I'd like my '08 to run better below 5000, but don't want to spend all that much, due to looking at buying a track bike.

Thanks!

I think the reflash would work fine. When you send your ECU into the retailer you give them the configuration of your bike. My bike is bone stock except for a slip-on.

Track bikes are fun, money pits, but fun. :tup:
 
I rerouted the ECU so it now sits on top of my battery. You're right, pulling the tank and airbox is a PITA. Now I can swap out in a couple of minutes. Heck it took longer to start the computer to remap the Power Commander and swap ECUs. :tup:

Please tell us how you rerouted since IIRC it is a PITA without cutting the wiring harness. I want to do this mainly to free the area under the airbox for smooth airflow.

If things turn out tight to buy a daytona next year then I may strip down most of the mods on the FZ1 and just get the flash done and put the money on the daytona. Thanks for the review :tup:
 
Last edited:
Please tell us how you rerouted since IIRC it is a PITA without cutting the wiring harness. I want to do this mainly to free the area under the airbox for smooth airflow.

If things turn out tight to buy a daytona next year then I may strip down most of the mods on the FZ1 and just get the flash done and put the money on the daytona. Thanks for the review :tup:

It was really easy, in fact I did it in a Cabella's parking lot.

All I did was pull the two ECU cables out of the air box area. Untangle them from the rest of the harness than route them under the tank pivot. I routed them to the right hand (throttle) side and laid the ECU on top of the battery.

I've got a Ballistic battery but even so there should been enough room.with the stock battery.

If I was at home with room and full tools I would have routed to the left, more direct side, instead.

Sent from my LG-P925 using Tapatalk
 
I just dropped the bike off for dyno testing and tuning. It will be a couple off weeks for results. The shop was hit by lightning and the dynos computer was fried.

They do a sweep of both ECUs and 1 and 2 gear pulls. It will also be test to determine PC trim values, if any.

Sent from my LG-P925 using Tapatalk
 
This is all very interesting and helpful information! Thank you so much for not only taking the chance on the re-flash, but stating your findings so clearly.

Dave
 
Back
Top