POLL - Help me choose a tune...

[DennyTuna]

Do you ever find that the 240SS tune has too much "snap" to be able to get on it coming out of a corner?

Yes and then No. So early on in the years of 18, 19, 20 and 21 I struggled with the balance on my 18 LTX LE. The best setup was a Bill Mohr center spring, in my opinion it was like a teeter toter. When you mashed the gas out of a corner the skis would be off the ground just enough you didn't have control and when you let off the gas it planted those skis hard. After the 21 season I had enough and decided on major changes to the entire suspension. On recommendations from this site, I contacted John Sherrod. Game changer, on his recommendations I now have a well-balanced sled that I could use the power coming out of a corner and it didn't nosedive letting off the gas. I guess in answering your question a stock machine poorly setup has too much snap coming out of a corner. A well-balanced suspension and tuned sled will handle your snap coming out of any corner. I will be installing the same front springs, center spring, torsion springs, limiter strap and a little tuning on the QS3'r shocks on the new 25 that I did to my 18. It is that good! Oh, and I will be tuning it with the Hurricane 240 SS SM tune.

 

[STAIN]

little tuning on the QS3'r shocks

What did you do to the QS3's?

 

[DennyTuna]

What did you do to the QS3's?

I had Accelerated Technologies do a revalve on the fronts and speed up the rebound on the rear shock. Revalving these shocks is not a thing just anyone can do. It's not shim stacks it's the orifice on the position (1,2,3). The best way to explain it was when I got them back and hit the snow position 1 was close to stock 2 position, position 2 was a little better than stock 2 position and position 3 was very useable unlike stock position 3.

 

[jonlafon1]

Sometimes the hardest part of controlling these is controlling your thumb! No lie. It just keeps getting more difficult the higher the tune. If you're not careful you end up reacting to the throttle instead of acting with it.

O so true!!! One word that relates to this> HEADERTUNE. Or is that two?

 

[Pstn head]

TD or Hurricane, would be my choice. Period!

 

[baggs66]

I would just get the hurricane bundle, for the price instead of paying to upgrade again in the future, had the sm tunes on my 19 till last year, then went with 3" super quiet and 240,270,300 bundle. If you run the Dalton weights it's just a simple change to run spot on each tune or split the difference between top 2 tunes, a little heavy on 240 makes it smooth and pull hard and light on 270 makes it snappy and ski lifter. I run on 270 most of the time in tight trails with no problem, all in the springs you use in primary and center shock to have control.

 

[Upstater57]

I am running the 225/240/270 stock muffler tune. I notice about a 100 rpm difference between the 225 and 240 with an additional 100 rpm on the 270. The 270 spools up quicker than the 240 and 225. It is perfect for me. I will also note the fuel mileage runs between 13 and 14 mpg for trail riding. Best I ever got when it was stock was 11. 5. Not that it makes much difference, but the tune itself is more efficient than stock. I run stock gearing a TAPP with a XS829 belt with a Ron Ward conversion on the rear clutch with 5 studs per bar. It is a happy set up for me. Leaves the 2 smokes in the snow dust.

 

[stgdz]

270 seems to have way more.midrange pull. I ran 240 for awhile and then started to try 270.

Now it's all I run.

 

[twyztid]

I am running the 225/240/270 stock muffler tune. I notice about a 100 rpm difference between the 225 and 240 with an additional 100 rpm on the 270. The 270 spools up quicker than the 240 and 225. It is perfect for me. I will also note the fuel mileage runs between 13 and 14 mpg for trail riding. Best I ever got when it was stock was 11. 5. Not that it makes much difference, but the tune itself is more efficient than stock. I run stock gearing a TAPP with a XS829 belt with a Ron Ward conversion on the rear clutch with 5 studs per bar. It is a happy set up for me. Leaves the 2 smokes in the snow dust.

Any heat issues with the stock muffler running either the 240 or 270 SM tune? What octane fuel are you running for the 270?

 

[number1kyster]

I ran Max Spool 16 for 5 seasons, and 6,000 miles, all on 91 or 93 pump fuel. I only saw the knock light a handful of times.

Yes, the stock muffler gets warm on long pulls. Warm enough that my boot on that side became brittle over time, and cracked.

 

[twyztid]

I ran Max Spool 16 for 5 seasons, and 6,000 miles, all on 91 or 93 pump fuel. I only saw the knock light a handful of times.

Yes, the stock muffler gets warm on long pulls. Warm enough that my boot on that side became brittle over time, and cracked.

The heat is what I am concerned about with the SM tunes.

 

[sideshowBob]

The heat is what I am concerned about with the SM tunes.

IMO...these sleds need full after market venting kits...even stock.

 

[STAIN]

IMO...these sleds need full after market venting kits...even sto

Which do you use? Do you make your own? I want to vent the clutch and muffler but haven't seen any kits I like.

 

[twyztid]

IMO...these sleds need full after market venting kits...even stock.

I already do use the Speedwerx ACZR18VK-B vents for the lower part of the removable side panels.

Panel Vent Kit // 2018-2024 ZR / RIOT / XF 6000 / 8000 (exc. 2021+ RIOT X 8000) - 2017-2024 9000 Models / Yamaha Sidewinder

Our panel vents have an aluminum frame construction backed with stainless steel mesh to withstand even the toughest abuse!

speedwerx.com

 

[sideshowBob]

Which do you use? Do you make your own? I want to vent the clutch and muffler but haven't seen any kits I like.

I have a combination of vents but check out Hauck Power Sports Sidewinder ventilation kit.