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yzviper366
Active member
Just looking around seen BMP is offering a Y pipe along with straight Line Performance. Anyone running the Y pipe? Notice any gains? Is it worth it?
Anyone running a aftermarket Y pipe?
- Thread starter yzviper366
- Start date
I ran the SPI Y/Can and 1 degree of timing for a solid 6-7 hp at 8000 rpm, with proper clutching (SHR) its a pretty solid bolt on bump...
IN field testing shows 1-2 sled lengths over stock before clutching, picked up 100 rpm and likes 7900-8000...
doo updates especially the motor mount shims-BJ
IN field testing shows 1-2 sled lengths over stock before clutching, picked up 100 rpm and likes 7900-8000...
doo updates especially the motor mount shims-BJ
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yzviper366
Active member
How do you get the 1 degree timing I guess I didn't see anything on there website talking about that?
dealer has to bump timing...
that is what I recommend to make more power with Y/can-BJ
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yzviper366
Active member
Does that void warranty?
Y-Pipes
We have done a ton of Dyno work on the G4-850-927 here at TMS since we have had one in our shop since March 2016 to develop products and our exclusive TMS 927.
Many claims on the Y-Pipes out there as we tested two that were available last season along with tweeking on the stock one also,
Save your $ as we found the crew at BRP did there homework again on the production Y-Pipe, exhaust and Factory Muffler Package.
Dave Trygstad
Trygstad Motorsports
Your Leader in Rotax Performance and Development.
We have done a ton of Dyno work on the G4-850-927 here at TMS since we have had one in our shop since March 2016 to develop products and our exclusive TMS 927.
Many claims on the Y-Pipes out there as we tested two that were available last season along with tweeking on the stock one also,
Save your $ as we found the crew at BRP did there homework again on the production Y-Pipe, exhaust and Factory Muffler Package.
Dave Trygstad
Trygstad Motorsports
Your Leader in Rotax Performance and Development.
Dynoport has a good video on YouTube about the 850 https://youtu.be/fh5G3FqDFZE
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TurboJamie
Well-known member
Guess that settles it!
Only way to get more power out of the 850 might be boost or big bore.
Sent from my iPhone using Tapatalk
Sent from my iPhone using Tapatalk
We actually did a ton of field testing of products in the mountains on the G-4 850 and the TMS 927 with aftermarket exhaust components and came up with the same results!
Under hood heat temps add to a lot of issues created with anything other than stock especially on G-4.
Parts Changers (resellers) will claim anything just for a sale
Dave Trygstad
funny
I have run the SPI Y/Can/timing/clutching and destroy stock sleds....
BUT you cant beat the stock set up??
OKAY-BJ
Well lets be fare to the consumer topic was just the y pipe not the other things you listed. I'm quite sure with addition to that y pipe it does run better but with just the y pipe would it? Just saying.
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gopherchoker
Member
Rich from Dynoport has the same conclusion: save your money.
Vid with his explanation
https://youtu.be/fh5G3FqDFZE
Vid with his explanation
https://youtu.be/fh5G3FqDFZE
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powdermuncher
Well-known member
Just a heads up -- a well set up sled with proper suspension and clutching will kill a stocker any day never mind engine mods , ad a good rider and 
Lets call a spade a spade Y pipes allone do nothing at all.
I think we can put this one to bed to much evidence here.
Lets call a spade a spade Y pipes allone do nothing at all.
I think we can put this one to bed to much evidence here.
to be fair...
the best ypipe on a 800etec is 2-3 hp...
and that is a fact and obviously a minimal increase by itself...
NOBODY won a race with just a 800etec Ypipe...
what's funny is a certain fella claiming the same thing (y pipes dont work on 800s) is now REselling someone elses...
it is rarely 1 single item that does make a difference, what does is a combination like a Y,can,timing and proper clutching (vs a couple bolts from ACE hardware) so when a guy wants a simple "tune up" he needs to address several areas (not even counting chassis, gearing,shocks) to see a gain on the lake or mountain...
hence the 1/2 mile field in front of my shop and 6 trips outwest testing/tuning/fixing the 850...
since 2001 I have been on here solving/fixing/improving/helping summits...2018 is no different-BJ
did I mention I have the ONLY in sled/on the hill adjustable clutch weights for the 850??!!
the best ypipe on a 800etec is 2-3 hp...
and that is a fact and obviously a minimal increase by itself...
NOBODY won a race with just a 800etec Ypipe...
what's funny is a certain fella claiming the same thing (y pipes dont work on 800s) is now REselling someone elses...
it is rarely 1 single item that does make a difference, what does is a combination like a Y,can,timing and proper clutching (vs a couple bolts from ACE hardware) so when a guy wants a simple "tune up" he needs to address several areas (not even counting chassis, gearing,shocks) to see a gain on the lake or mountain...
hence the 1/2 mile field in front of my shop and 6 trips outwest testing/tuning/fixing the 850...
since 2001 I have been on here solving/fixing/improving/helping summits...2018 is no different-BJ
did I mention I have the ONLY in sled/on the hill adjustable clutch weights for the 850??!!
