Low RPM run quality of 2020 800 C-Tec - Page 3 - HCS Snowmobile Forums

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Old 02-05-2020, 12:20 PM   #21 (permalink)
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Seems like there's a bit of money to be made on the 2020 800's with respect to clutching packages and ECU flashes.

I'd pay a bit of money myself to get rid of the 3000 RPM idle hang, and clutching to fix how in lower speed stuff the RPM's are way higher than they should be - like driving down a 40 MPH street in second gear.
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Old 02-05-2020, 01:34 PM   #22 (permalink)
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Originally Posted by ten_39 View Post
Seems like there's a bit of money to be made on the 2020 800's with respect to clutching packages and ECU flashes.

I'd pay a bit of money myself to get rid of the 3000 RPM idle hang, and clutching to fix how in lower speed stuff the RPM's are way higher than they should be - like driving down a 40 MPH street in second gear.
Unfortunately we as the consumer do not have a choice in this IMO. Pay the money for the Precision flash and your issues will be gone. Speaking from my own personal experience. Does paying the money to make the sled run right suck? Yes. Do I regret spending the money after the flash fixed all my issues? Nope.
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Old 02-05-2020, 01:42 PM   #23 (permalink)
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Because they are trying to do something that canít be done very well with a 800. There is a reason the other 2 have 850s now
so you are trying to say the other 2 went to 850's to solve an engineering issue? I think not , the other to had/have 800's that dont do these things. IMO its engine design or very poor ECU mapping people causing these problems. I hope they get solved soon.The winters are too short and the sleds are too expensive.
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Old 02-05-2020, 02:32 PM   #24 (permalink)
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'20 ZR 8000 Ltd, studded, about 650 miles

I just got back from a week in northern WI. My sled's run quality was less than impressive. Stumble around 48-5500 rpms, crappy on/off power around 55-6000 rpms. Sled is difficult to ride slowly in the woods. Acted like it was loading up on the low end. Hangs idle when coming to a stop, more often than not. Run quality has worsened with increasing mileage.

Handling was good but did push in the corners a bit depending on snow conditions, which is not a surprise.

Had to put scratchers on it after a 44 degree day followed by cold again. Again, not a surprise.

Clutch engagement is hard with a knock sound just like my '14 800, not what I'd call smooth.

Oil consumption is low but I fill it up daily anyway. Fuel consumption isn't any better than my buddy's '12 F8.

Lined up against the '12 F8(clutched), a '15 800 ETEC(stk), a '19 850 ETEC(stk), and a '20 XC 850 Polaris(stk). Dead even with the F8, '15 ETEC walked away, and the two 850's ran away from me, hard.

Rode the 850 Polaris and was rather impressed. Comfortable, very smooth engagement and power delivery. Pulls like a freight train.

I've been on Cats for years. Just as most of us, I work my ass off to be able to ride sleds and this past week has me less than happy about my purchase. Not sure where I'll go from here.
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Old 02-05-2020, 04:54 PM   #25 (permalink)
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I just got off my 20 ZR8000LTD, what a great sled, I see some of you are complaining of run quality and clutching issues. Before I even rode the sled, I put 192 studs and C&A ski's with 9" shapper bars. The sled rides and handles Great, you aim it where you want it and it's there!! It holds an inside line like no sled I've had in the past. after the first ride I felt the engagement was to low and it over reved, I put a new spring and adj weights, the sled works great, RPM's are right on, The sled runs good. I haven't run into any running problems, and I hope i don't. But all in all I think it's a great sled.
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Old 02-10-2020, 11:23 AM   #26 (permalink)
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i have about 950 miles on my 20 8000 RR. The sled is great. It handles very well. I put the cat mountain skis on it from day one, only have 4" stock carbides and this thing rails. you sit in the back of the seat and the steering is easy, you sit forward on the seat and the steering effort becomes harder and bites more. I find the 20 much more rider input and I like it. This sled is night and day better from my 16. They have made some great refinements with this sled in the handling department and everything for that matter. I only have two issues with it. The sled does run very rough at 15-20 mph (slow riding) it chugs/feels like loads up. I feel it's probably mapping. Second, oil consumption is quite high. Oil light came on at 230 miles. My brother has a 6000 and same trip he used only 1 liter versus my 2.5 liters.
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Old 02-10-2020, 12:47 PM   #27 (permalink)
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I have close to 500 miles on my 2020 Riot X 8000 and agree with others on the low speed engine run quality. Does seem to load up a bit. I did foul a set of plugs at 225 miles. Through a fresh set in and has run great since. Plugs I pulled out didn't looked fouled, but all is good now. Also am seeing oil consumption higher then what I expected. Other then those minor "issues" the power curve is awesome compared to the Zuke. Much better low/mid power and the clutching seems great to me.
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Old 02-10-2020, 01:01 PM   #28 (permalink)
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Location: Central, MN
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1200 miles on my 2020ZR 800, I guess I got a lucky one I don't have the low speed stumble that some of you are experiencing. Averaging around 12 mpg and sled sips oil, haven't measured the oil to fuel ratio yet. My fuel consumption riding with 6 Doo's, I would use 1 gallon more then the 3 850's and 2 gallons more then the 600's.

Did install adjustable weights to lower the high rpm's. Sled pulls hard all the way to 80 top speed I seen on speedo was 103 (half mile run).

Only raced a couple sleds 2020 Doo 850 dead even up to 80 then he started to gradually walk away, I was surprised I kept up for that long.

Raced my sons 2014 ZR 800 and a 2016 XF 800 I had no problem with either one of these sleds, raced twice and I won both times.
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Old 02-10-2020, 05:01 PM   #29 (permalink)
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Quote:
Originally Posted by soeaster View Post
'20 ZR 8000 Ltd, studded, about 650 miles

I just got back from a week in northern WI. My sled's run quality was less than impressive. Stumble around 48-5500 rpms, crappy on/off power around 55-6000 rpms. Sled is difficult to ride slowly in the woods. Acted like it was loading up on the low end. Hangs idle when coming to a stop, more often than not. Run quality has worsened with increasing mileage.

Handling was good but did push in the corners a bit depending on snow conditions, which is not a surprise.

Had to put scratchers on it after a 44 degree day followed by cold again. Again, not a surprise.

Clutch engagement is hard with a knock sound just like my '14 800, not what I'd call smooth.

Oil consumption is low but I fill it up daily anyway. Fuel consumption isn't any better than my buddy's '12 F8.

Lined up against the '12 F8(clutched), a '15 800 ETEC(stk), a '19 850 ETEC(stk), and a '20 XC 850 Polaris(stk). Dead even with the F8, '15 ETEC walked away, and the two 850's ran away from me, hard.

Rode the 850 Polaris and was rather impressed. Comfortable, very smooth engagement and power delivery. Pulls like a freight train.

I've been on Cats for years. Just as most of us, I work my ass off to be able to ride sleds and this past week has me less than happy about my purchase. Not sure where I'll go from here.
Same situation. Cat got back to my dealer about the high idle/ poor low rpm issue and said this was all normal and running as it should which I thought was complete B.S. Shouldn't have to buy an aftermarket flash which voids the warranty just to fix their problem.

I also tried the Polaris 850 and couldn't believe how smooth the engine was. The Cats in the garage just might have to make room for a '21 850 Indy XCR next season.
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Old 02-10-2020, 05:59 PM   #30 (permalink)
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Originally Posted by kbr577 View Post
I just got off my 20 ZR8000LTD, what a great sled, I see some of you are complaining of run quality and clutching issues. Before I even rode the sled, I put 192 studs and C&A ski's with 9" shapper bars. The sled rides and handles Great, you aim it where you want it and it's there!! It holds an inside line like no sled I've had in the past. after the first ride I felt the engagement was to low and it over reved, I put a new spring and adj weights, the sled works great, RPM's are right on, The sled runs good. I haven't run into any running problems, and I hope i don't. But all in all I think it's a great sled.
Just got back from a great 115 mile ride, Sled performed great. I made several 1000ft runs, and ran most of the other miles hard, like pinned whenever I could. It got 13.6 +/- .1. I think that is pretty good for how I was riding.
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