Vmax
TY 4 Stroke Junkie
Yamasledder, that is my question. So Yamaha's and Cat's have the same engine in all of there Vipers and ZR's and yet some have success with the flashes and others don't, makes no sense at all.
I bought my 2015 ZR 7000 El Tigre last March and they did a new flash on it before I brought it home. I only had one hot start issue in the 500 + miles I put on it but have no history with this sled to know if the flash made it better or worst
I bought my 2015 ZR 7000 El Tigre last March and they did a new flash on it before I brought it home. I only had one hot start issue in the 500 + miles I put on it but have no history with this sled to know if the flash made it better or worst
Harvest1121
Pro
- Joined
- Dec 15, 2010
- Messages
- 177
I have not started my Viper in 5 months started right up on second try. Who knows what works
Norse
Pro
- Joined
- Jan 1, 2019
- Messages
- 181
- Location
- Sápmi
- Country
- Norway
- Snowmobile
- 2013 Arctic Cat M1100 HCR 162"
Boondocker turbo 250HP(sold)
2016 Yamaha SR Viper MTX LE 162"
MCXpress 270HP, lots of mods (sold)
2021 Arctic Cat M8000 Hardcore Alpha 155"
N/A (sold)
2023 Yamaha SW MTX LE 153"
M&M Racing 270HP, Elevate, lots of mods
Finally got the time to have mine updated. Thought I could share my experience.
2016 MTX 162" with mcx 270 turbokit.
Pre-update it would start after 1 sec, and immediately idle at 1600RPM. At cold start it would run at 1800 till the temp was good. I rarely had to turn the key twice to get it going. I had nothing to complain about.
Post update: At 0°C/32°F I had to crank it for 5 seconds, then it would barely start, then idle at around 800 and slowly up to 1500. Seemed like it really struggled to get going. It idles at lower RPM, so it sounds different. But then I noticed the RPM was more stabile and barely flinched 50RPMs at idle. I tested it on the field, and it responded noticably better. I parked, let go of the throttle, and the RPM slooowly went from 2000-1500, which it has never done before. Don't know how it will respond at cold start yet, but I have a bad feeling about this whole new update thing. I do like how I can suddenly hear turbo flutter again after installing a straight pipe
2016 MTX 162" with mcx 270 turbokit.
Pre-update it would start after 1 sec, and immediately idle at 1600RPM. At cold start it would run at 1800 till the temp was good. I rarely had to turn the key twice to get it going. I had nothing to complain about.
Post update: At 0°C/32°F I had to crank it for 5 seconds, then it would barely start, then idle at around 800 and slowly up to 1500. Seemed like it really struggled to get going. It idles at lower RPM, so it sounds different. But then I noticed the RPM was more stabile and barely flinched 50RPMs at idle. I tested it on the field, and it responded noticably better. I parked, let go of the throttle, and the RPM slooowly went from 2000-1500, which it has never done before. Don't know how it will respond at cold start yet, but I have a bad feeling about this whole new update thing. I do like how I can suddenly hear turbo flutter again after installing a straight pipe
dink_smallwood
Newbie
I dropped my ‘16 STX-DX at the dealer for some preseason work. They said they flashed the ECU but does the date on the diagnostic menu change? Please see pic with a 1/31/14 date:
https://imgur.com/uySfBKx
https://imgur.com/uySfBKx
Attachments
2015ViperMTX
Pro
Mine is a 2015 with the latest flash and mine shows 1-31-14 as well
Since most of us are out of warranty or going out its about time to give up on Yamaha and Cat and go aftermarket tune. Looks like Precision is our best hope for a honest good true flash and not ripping apart the ECU to do it. Couple guys are working on getting it done. Lets hope we have another option. If it was Baseball Yamaha and Cat struck out what 2 flashes ago! Embarrassing.
mryamaha
Extreme
Annoying enough that I am now done with this sled.
Sorry to hear that but I understand.
2015ViperMTX
Pro
I have limited time on my sled, but I am very impressed with its performance
As am I. Couple quirks with tune but many others have alot of issues. Its the inconsistencies that are the big issue.
mryamaha
Extreme
After having an 08,09,and a 2012 Nytro I know what this set up could be like if Yamaha could get their #*$&@ together.
Just have to get the Cat out of the programming.
2015ViperMTX
Pro
I bought mine as a hold over and rode it at sea level and was very happy with the power/etc
this thread has me concerned what might happen when I take to the mountains/elevation this winter.....
this thread has me concerned what might happen when I take to the mountains/elevation this winter.....
You would know if you had starting or stalling issues already. No worries. Keep in mind that other than the longer crank which this latest flash has most are happy with it. Its just not perfect in some cases.
2015ViperMTX
Pro
I did notice when it was warm-shut sled off, restarted within a few seconds-it did crank a long time and didn’t start. I let off the key and cranked it again for what seemed a long time but it did start. Other than that no issues.
