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Hot start and low rpm burble is bad on my '15, cold is never a problem. I went with the EVO flash looking for improvements, but it didn't help at all. In communicating with EVO about it, they pointed towards fuel injectors with bad manufacturing tolerances. Just another possibility-

Is this something new his sled is experiencing or has it always had it?

Cold with just turned key on- 39 coolant temp 39 Intake Air Temp 727 mmHG Baro 129 ISC 54 ohms Fuel pump 12.2v Cold started- 120 ISC 55 Ohms Fuel pump 14.6 Warmed up- 170 coolant temp 51 intake air temp 727 mmHg Bar 71.92 ISC 58 Ohms Fuel Pump 14.6 What kind of starting problem you working on?

http://www.startinglineproducts.com/catalog.cfm?pageID=detail&catalogID=2&catID=3&productID=263

Mine does it also http://ty4stroke.com/threads/viper-engine-tune.135771/

Weird...my sled only has a hint of vibration (sometimes) you can feel thru your boots, other than that it is smooooth. I've read where you've commented on this track before and it didn't make sense to me. Mine is bone stock except for Ulmer clutch kit. It's been that way for 2500 miles; just...

Not sure if the "silent" track is the reason but I like how "quiet" the Cat drive train is. I hated the drone on Apex and Vector's (not sure of the Nitro's). Please let us know if this changes with what you're doing.

Not positive and not cheap but ~$200 could get your clutches hardcoated. They can mask any area you don't want the coating like this tool I made recently out of 6061. I would like to see how it would hold up on the belt faces.

If you read enough around here about the "Cat" fuel injection system; there is something going on causing inconstancy's between sleds. Where some people get away with no issues running an Air Box mod and/or Can, others will experience a lean condition. I've seen it on several sleds now. If you...

Janne, I've never changed any relays or familiar with this logic. Are you saying Idle Speed Control relay could be faulty causing idling issues?

After reading what many have posted describing what a "kick-back" is, I don't think I ever had one. I do however have an inconsistent idle, low rpm burble and hot start issue. I went with the EVO stage 1 (all stock) 91 octane flash to try and resolve this. EVO was upfront with me, that although...

LOL, sometimes I read so much, I'm scared to turn the key in fear my machine will blow up! I will see how the sled does after this weekend with the new EVO tune and decide if I need to take this further. Maybe it will run "good enough". Cannondale, I want to thank you again for going out of...

Don't know if it's official but I just got word that the reflash is out here in MI. Can anyone confirm?

Thanks, fingers crossed...

Ok, so I googled it and appears that the reluctor wheel is pressed onto the PTO stub shaft. If it did "move", wouldn't it show up when checking timing? I assume timing can still be checked on these?

Thanks Cannondale. I'm sure we'll get this figured out eventually and I realize sometimes it's by dumb luck issues are found. I will give it a try this weekend and see if it's any better. As far as that reluctor deal you mentioned, where is it exactly. I'm looking thru parts diagrams to figure...

Guys, this post originated back in February but someone wanted to know the outcome of the issue so it was brought back up. Obviously, I've picked up my sled by now, and yes my sled tune still has issues. Dealers- It is stupid difficult to find a good dealer that will spend time with your sled...

Dang that's cold!! I agree with this. It seems our society has adopted a system where you buy a product then wait for computer updates to fix it. I might be a little old school, but I still believe in buying a product, not a project. In the old days, if there needed to be a fix for something...

Thank you BigDog for the offer, but for the reason I posted above, I don't think I'll be using that dealer again. Just my experience-

Like I said, that was the short story, but yes, I believe that dealer should have NEVER have let my sled go out the door without finding the reason it fouled plugs in the first place. IMO, a good dealer would have held on to it and told Yamaha to stick it up their ying-yang until the issue was...