number1kyster
TY 4 Stroke God
Kudos to Doo for at least making an effort to rectify the problem.
Time will tell if this actually fixes the issue.
Time will tell if this actually fixes the issue.
Turboflash
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I'm also glad BRP addressed it quickly (relatively speaking). All too often, (my experience with Cat anyway) is they go into "ignore" mode or "customer must have done something wrong" mode or just hide out all together staying in the denial mode.
My friends 900R is in getting the updates this week so he should know soon.
Doc Harley
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Which in turn causes everyone to try and fix the problem themselves. I've seen it all....belts, weights, helix, boost, etc. They've been pulling thier hair out for three months.
SledFreak
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I still think the issue is low boost!
number1kyster
TY 4 Stroke God
There is a thread on DT about it now. Prevost is claiming the ECU pulls 5 degrees timing as soon as the intercooler gets heat soaked.
NYTurbo
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Makes sense
74Nitro
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Yes, remember, even though the 900R has a throttle cable, it does not hook to the throttle bodies.
it was so entertaining too, what will they go on about now.
Doc Harley
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I assume the TPS & cable adj. Would help with that.
Imagine pinning the throttle & the sensor is indicating only 70%.
The thread on DT is a s-show. Most are posting that the fix is BS, many are saying that they won't get the fix. Funnnnny. First they demand a fix and then they don't like that it isn't something exotic. The Prevost post on FB was the most interesting. $4-6k of parts later....
"Well we did some testing this winter with the hurricane ecu, mid pipe and clutch setup for the doo 900R. As you all know we test what we sell and deliver real results. When we first installed this setup it was a struggle to get the sled to perform. I spent lots of time on the phone with Dave @ hurricane, updating the tune and tonnes of time field testing. Found a loose throttle cable, some poor connections on the charge side of the turbo a bunch of little Issues. Towards the of the season the sled finally started coming around. The customer went on a few big trips one being in Quebec putting on 1400 km’s without issues. We probably have approximately 2500 km’s on the ecu. So having said that one of the issues we had was the stm clutch weights that came in the kit, they worked ok but we now have a way better set of weights that we use. ( ran out of winter to really complete the clutch setup) We also geared the sled taller. The latest tune Dave sent me definitely worked the best. One of the bonus things with this setup for the 900r models that aren’t Mach z’s is you get launch mode. This sled will never be king of the lake however with the setup we have in it now it’s night and day different mannered and it’s a blast to ride in the trails. The response, the way it accelerates and stretches your arms corner to corner makes it a blast to ride. My feedback from the customer is very good now he’s pleased with the performance and he can pull away from a stocker at ease. He lined up with a 270 tuned sidewinder and was able to stay with him till approx 105 mph. The sled will put 3/4 lengths on a stock 900r in a drag race very quickly aswell. On ice it will run between 118-122 mph in 1320 ft depending on the conditions and traction. The biggest issue we are seeing with these sleds with the ecu is that the intake temperatures climb way too high and then ecu will then pull 5 degrees of ignition timing to keep the engine safe. The oem ecu does the same thing hence the inconsistent performance. We will be installing a better intercooler and maybe even meth injection for next season. We are also developing a cold air that’s completely different than a traditional style for this sled that should also help a lot. Overall now that it’s sorted out it’s a pretty good trail package that I would be confident in selling more of."
"Well we did some testing this winter with the hurricane ecu, mid pipe and clutch setup for the doo 900R. As you all know we test what we sell and deliver real results. When we first installed this setup it was a struggle to get the sled to perform. I spent lots of time on the phone with Dave @ hurricane, updating the tune and tonnes of time field testing. Found a loose throttle cable, some poor connections on the charge side of the turbo a bunch of little Issues. Towards the of the season the sled finally started coming around. The customer went on a few big trips one being in Quebec putting on 1400 km’s without issues. We probably have approximately 2500 km’s on the ecu. So having said that one of the issues we had was the stm clutch weights that came in the kit, they worked ok but we now have a way better set of weights that we use. ( ran out of winter to really complete the clutch setup) We also geared the sled taller. The latest tune Dave sent me definitely worked the best. One of the bonus things with this setup for the 900r models that aren’t Mach z’s is you get launch mode. This sled will never be king of the lake however with the setup we have in it now it’s night and day different mannered and it’s a blast to ride in the trails. The response, the way it accelerates and stretches your arms corner to corner makes it a blast to ride. My feedback from the customer is very good now he’s pleased with the performance and he can pull away from a stocker at ease. He lined up with a 270 tuned sidewinder and was able to stay with him till approx 105 mph. The sled will put 3/4 lengths on a stock 900r in a drag race very quickly aswell. On ice it will run between 118-122 mph in 1320 ft depending on the conditions and traction. The biggest issue we are seeing with these sleds with the ecu is that the intake temperatures climb way too high and then ecu will then pull 5 degrees of ignition timing to keep the engine safe. The oem ecu does the same thing hence the inconsistent performance. We will be installing a better intercooler and maybe even meth injection for next season. We are also developing a cold air that’s completely different than a traditional style for this sled that should also help a lot. Overall now that it’s sorted out it’s a pretty good trail package that I would be confident in selling more of."
NYTurbo
TY 4 Stroke God
Prevosts post I feel is very good and informative, just because it has a stand alone some of the issues he mentions is in line with the BRP updates. Pulling 5 degrees of timing is huge .
I think the Prevost post above is honest and he says it like it is. He flat out tells everyone, the Z will never be king of the lake. I'm sure hearing this must sting if you own a Z, but at least he isn't selling lies.
At least he offers hope and with the TPS malfunctioning, he provides an answer as why some are low on RPM at WOT.
The thought of Z's finding some extra rpm and turning a full 7900 rpm like they should, really has me shaking in my boots. If these Z's continue to improve, I may have no choice but to go 5/8ths throttle, instead of 1/2 to stay ahead??
At least he offers hope and with the TPS malfunctioning, he provides an answer as why some are low on RPM at WOT.
The thought of Z's finding some extra rpm and turning a full 7900 rpm like they should, really has me shaking in my boots. If these Z's continue to improve, I may have no choice but to go 5/8ths throttle, instead of 1/2 to stay ahead??
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number1kyster
TY 4 Stroke God
It's a shame that Doo had to bill this sled as king of the lake. It has given a fantastic trail sled a lot of negative attention.
Doc Harley
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It's just my opinion....
In the real world the Mach Z is simply a well put together, long distance cruiser. No oil to fuss about. Cool dash set-up , great suspension, etc. It's got everything one would need to enjoy a day out on the trails.
When we compare power output, suspension, handling, etc. It's kinda like micromanaging. All those show up as each sled is pushed to it's limits. Or more than likely the riders limits.
Hell....I found out the hard way, last month, what it's like to run with 2 smokes in the very tight Twisties in northern, Wis. During very fast paced riding. Didn't go as planned....lol anyway....
In stock form, can the 900cc turbo run with a 998 turbo. The short answer is, absolutely. Could be for 600', 1,000' or maybe 2,000'. Idk....
I absolutely raped a 900t out on the lake. I was hoping it was an "R" I'm sure the rider hasn't been them same since, as we all took turns beating up on him. Poor guy Lol....
Then we get to the question of modified.....we can debate this for years. "My sled is tune only" "your sled has a bigger turbo" blah, blah, blah.
The answer to this is simply. The guy with the most money in his sled wins.
In the real world the Mach Z is simply a well put together, long distance cruiser. No oil to fuss about. Cool dash set-up , great suspension, etc. It's got everything one would need to enjoy a day out on the trails.
When we compare power output, suspension, handling, etc. It's kinda like micromanaging. All those show up as each sled is pushed to it's limits. Or more than likely the riders limits.
Hell....I found out the hard way, last month, what it's like to run with 2 smokes in the very tight Twisties in northern, Wis. During very fast paced riding. Didn't go as planned....lol anyway....
In stock form, can the 900cc turbo run with a 998 turbo. The short answer is, absolutely. Could be for 600', 1,000' or maybe 2,000'. Idk....
I absolutely raped a 900t out on the lake. I was hoping it was an "R" I'm sure the rider hasn't been them same since, as we all took turns beating up on him. Poor guy Lol....
Then we get to the question of modified.....we can debate this for years. "My sled is tune only" "your sled has a bigger turbo" blah, blah, blah.
The answer to this is simply. The guy with the most money in his sled wins.
