I did my first ride last weekend with the Weller reflash, we went a little over 200 miles very happy with the way it preformed as well. Also did the 22 gram clutch weight change that did help with the engine noise level. Weller did a great job on shipping as well they shipping it back out the same day it was received by them.

 

Yessir the door-to-door service was great, very fast.

 

Anyone know what the Weller tune changes? I assume it backs off the timing and increases fuel to run richer, which generally results in a cooler running motor. And at what temperature does the fan cycle on and off before the tune? Thought I saw the Weller tune has the fan come on 10 degrees cooler, but why? Does the RMAX have an overheating issue? I thought engines generally are more efficiently at higher temps. I'd rather the fan not be running any more than necessary. Has anyone used an IR thermometer to measure temps on the motor or exhaust to see how hot it runs before and after tuning?

 

• RPM Limits Raised
• Top Speed Limits removed
• Fuel Mapping Improved
• Ignition Mapping Improved
• AWD Speed Limits removed
• Drive by Wire Mapping Improved (including all D-Modes)
• Throttle and Torque Limiting Maps Improved
• Cooling fan activation lowered by 10 Degrees

Even on my Yamaha atv, I had always felt that the machine's fan would kick on too late. 225 degrees. So i am happy with my RMAX kicking on 10 degrees sooner. I have put on over 100 miles with the tune, the fan isn't on more than normal that I have noticed

 

So what happens when you have your machine at the dealer? I'm sure this voids the warranty which really isn't my concern but I know on my truck tune if I don't reflash to stock the dealer will do it.

How do you get the weller tune back? Buy a 2nd stock ECU to put in the machine when you take it to the dealer?

 

So what happens when you have your machine at the dealer? I'm sure this voids the warranty which really isn't my concern but I know on my truck tune if I don't reflash to stock the dealer will do it.

How do you get the weller tune back? Buy a 2nd stock ECU to put in the machine when you take it to the dealer?

Buy the dynojet PV3 with the weller maps. You can switch to different maps in a matter of minutes. Even back to stock. To me this is the only way to go. You can have all the weller maps ready to go, even the 87 octane ones. I have this set up and it works great. Yes its a more expensive option, but you get 5 maps and the ability to switch it back to stock

 

My take is unless you have an ECU related warranty issue you have nothing to be worried about. The dealer tech doesn’t give a crap about a tune if he’s working on your rear axle. He’s getting paid by the job. No time to go sideways and check your ECU. My opinion.

 

You may be right, it just concerns me that if my ecu pops a code and I have to take it in, even if it has nothing to do with the tune, the dealer will have to plug into your ecu to see and clear the codes. And with these machines having so many sensors, just like cars, it will pop a code even if the only issue is the sensor went bad.

If these dealers are anything like auto dealers they'll reflash your ecu back to stock. Been there. Then what? Unless you have another ecu that holds the tunes or the dynojet you're back to the starting point.

Just saying, if you're going to have a tune you must have a way to restore it.

 

This site is dangerous

 

All the info an all the goodness

 

Been looking everywhere. Where can I buy this tune

 

PERFORMANCE

 

Awesome. Thank you. Just to confirm. I really don’t care about more performance. I really just want to fix the jerky throttle. I heard throttle max doesn’t do much on this. Will wellers tune help with this???

 

If you think the Rmax has a jerky throttle, get it out of sport and put it in crawl mode and save your money for those portals.
It’s praised as having the smoothest throttle on the UTV market.

 

I don’t have a drive mode option

 

An aftermarket drive mode switch is really inexpensive in comparison to a flash/tune and will accomplish your goal! Even an OEM switch is less money.
After a windshield, it should be the next addition for every base model owner.
Your the first I’ve ever heard call the throttle jerky, even in the default setting of trail mode but crawl mode will allow someone with a leg twitch to drive it smoothly.

 

Do I just purchase the oem switch or is there a wiring harness I need.

 

It comes plug and play.

Here’s the alternative.
D-Mode switch on ‘21 RMAX-4

 

Like mentioned in a prior post, the D mode switch will fix your throttle jerkiness. Crawl mode is what you are after. On super bumpy trails all I use is crawl mode, you will see what I mean once you get it.

Two options, both plug and play.

Yamaha RMAX 1000 D-Mode Switch Drive Mode ORDW RMAX2 RMAX4 RMAX1000 2021 2022 | eBay-

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Install video as well:

 

Got it. Thank you guys. I bought the eBay one. Saved some money to spend elsewhere.

 

Report back and see if that helps you out

 

Will do. You guys are awesome. Now I just need to figure out my other project. Updating the sprockets on the little ranger 150. Just lots of guesswork

 

I love the dmode switch I’m always in crawl. When I go to the dunes is the only time I change it. I didn’t like the jerky throttle either.

 

What are normal temps? I notice I get over 200 degree often before it drops to 190's.

 

That's normal running temps. It's a high performance motor and it gets hot. I have hit 225 climbing a constant grade at 52 mph no overheating warning. It was 103 degrees that day. LOL.