2015 WR450 Starting Woes

[kidrman]

I have a 2015 WR450 with a 2017 ST kit on it. I have a thermobob and all the other mods and it runs great but is a nightmare to start, both cold and hot. Does anyone who is running a 12-15 WR have similar problems or a solution?

Thanks in advance!

John

 

[wwillf01]

It's a pretty common problem until the new engine .. I know the local shop has adjusted something in the throttle body to help but it always seem hit or miss with who I ride with... There are 3 of them.

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[wwillf01]

As far as kicking it should be fine if you you add a richer map... Deleting the EPA stuff helps also.

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[kidrman]

Thanks. I've deleted most of the EPA stuff

 

[Niskibum]

I was having a really hard time starting my 2013 until I got the gytr programmer and found that my idle was set too low. Adjusted that and then the only time I had a problem was if I drove with it in the back of the truck on cold days without covering up the radiators and then used the e-start. Started covering up the radiators while driving and used the kick for the first start on cold days and had no more issues.

 

[kidrman]

My idle is at 2,000. What did you set yours at?

I'm towing in an enclosed trailer.

 

[Niskibum]

2,000 sounds about right. Mine had got set down to like 1300 somehow, probably when I was riding in the summer up over 6,000 feet, so it would run but didn't want to start. If you know your idle, I assume you have the programmer. Have you tried any different maps?

 

[Niskibum]

Here is a thread on Thumper Talk that might have some other stuff to try. http://www.thumpertalk.com/topic/976951-2012-wr450-starting-woes/page-3

 

[Timberview01]

X2 on the Thumper Talk thread. I learned a lot about my '15 WR over there. The biggest improvement you can make is to get the YZ ECU. Plug and play. My bike is still a little stubborn after sitting a few days in the cold shop, but starts every time with the button. I have yet to get the tuner to fine tune the EFI and ignition mapping, but Thumper Talk has a whole thread full of different maps that guys have field tested with results that should be useful once I get to that point.

I did all of the EPA removals, added a thermo-bob, fabricated an engine jacket for the left side of the motor, and placed insulation between the skid plate and cases. Loving this set up with my '17 Moto-Trax Enduro so far.

Have fun!!

 

[kidrman]

I've been reading all the thumper talk data. I do have the programmable ECU and tried a number of maps. I'm thinking about returning it all to stock settings and going with that.