MCX Stage 3 Sidewinder 260-340 hp Kit

Woodsie1984

Active VIP Member
Joined
Nov 12, 2012
Messages
404
Reaction score
766
Location
Pg B.C
Is the stock air box plastic ? If so how much boost can it hold ? I didn’t see a airbox in that pic of the kit.
 

climbmax

Team Thunderstruck
Joined
Aug 18, 2008
Messages
750
Reaction score
4,323
Location
Big Mountains of BC
Had her on the snow. Working on clutching at the moment. The hood scoop is useless and I have told Erik that. It puts too much snow in the engine bay and on the clutch guard. No need to even modify the stock hood. That intercooler runs very very cold even with the hood fully closed in. I have a new CR hood going on today. I'll post some pics up a tad later on.
Cheers
 

Lund

Active VIP Member
Joined
May 4, 2013
Messages
4,243
Reaction score
11,242
Location
Vernon/Kelowna
Had her on the snow. Working on clutching at the moment. The hood scoop is useless and I have told Erik that. It puts too much snow in the engine bay and on the clutch guard. No need to even modify the stock hood. That intercooler runs very very cold even with the hood fully closed in. I have a new CR hood going on today. I'll post some pics up a tad later on.
Cheers
what hood scoop Randy? Just wondering cause I get virtually zero snow under the hood or in engine compartment.
Duh, I get it, your talking about the modified hood for the larger inner cooler. Lol
 
Last edited:

Catman10

Drinking the Doolaid
Joined
Sep 30, 2008
Messages
778
Reaction score
2,198
Location
Red Deer Alberta
That hood scoop looks mean though, like something in a Mad Max movie, but it did look like it was not the answer for the deep powder, can't wait to see your new hood!
 

canuck5

Active VIP Member
Joined
Oct 20, 2008
Messages
870
Reaction score
1,773
Location
Sylvan Lake
Had her on the snow. Working on clutching at the moment. The hood scoop is useless and I have told Erik that. It puts too much snow in the engine bay and on the clutch guard. No need to even modify the stock hood. That intercooler runs very very cold even with the hood fully closed in. I have a new CR hood going on today. I'll post some pics up a tad later on.
Cheers

Are you running pump gas at elevation Randy? How much boost on that 19t to keep that 270 at elevation 15-17? Mcxpress stuff has always worked awesome little tuffer sell I imagine on a sled that already has a turbo but still sweet.
 

Sask_dragon1

Member
Joined
Feb 8, 2018
Messages
12
Reaction score
0
Location
Saskatchewan
I'd really like to see some videos of the Stage 3 in action. I noticed mc xpress had posted one video on one of their social media sites but nothing special. Real rider reviews will be great to hear.
 

climbmax

Team Thunderstruck
Joined
Aug 18, 2008
Messages
750
Reaction score
4,323
Location
Big Mountains of BC
Ok had her out again for a small test today. We removed the Baro Fuel Adjustment as it was running rich once we went past 1000 meters. Ran crisp and clean as it should. Pulled very hard and in fact was too fast for me to get a good read on much instrumentation. RPMs were in the 8800 range and boost was 14/15 on a larger 19T turbo. Will increase to 17-18 and add some upshift for the next test. Im sure it will be as powerful as I ever need. You can see the new CR Hood which is about 10lbs lighter than stock, new Seat hopefully coming from Yamaha next year. 1.5"lower and has some storage. About 5lbs lighter. Going to add some graphics cause I think its a bit plain. Overall very happy and getting it developed for some chute climbing.
Safe sledding
RS
 

Attachments

  • 174 Winder.jpg
    174 Winder.jpg
    118.1 KB · Views: 388

skegpro

Active VIP Member
Joined
May 11, 2009
Messages
9,930
Reaction score
21,329
Location
In them hills.
Ok had her out again for a small test today. We removed the Baro Fuel Adjustment as it was running rich once we went past 1000 meters. Ran crisp and clean as it should. Pulled very hard and in fact was too fast for me to get a good read on much instrumentation. RPMs were in the 8800 range and boost was 14/15 on a larger 19T turbo. Will increase to 17-18 and add some upshift for the next test. Im sure it will be as powerful as I ever need. You can see the new CR Hood which is about 10lbs lighter than stock, new Seat hopefully coming from Yamaha next year. 1.5"lower and has some storage. About 5lbs lighter. Going to add some graphics cause I think its a bit plain. Overall very happy and getting it developed for some chute climbing.
Safe sledding
RS
What's involved in bypassing the barometric adjustment?
 

skegpro

Active VIP Member
Joined
May 11, 2009
Messages
9,930
Reaction score
21,329
Location
In them hills.
Just a laptop. We turn off the functionality.
It's interesting you say that we have a flashed Evo one in the group.

And at elevation it puts out 16lbs on the analog guage. Their literature claims that they only put out 14.8psi.

They don't really clarify if it is psi guage or corrected pressure.
 

climbmax

Team Thunderstruck
Joined
Aug 18, 2008
Messages
750
Reaction score
4,323
Location
Big Mountains of BC
My MCX stage2 put out 15 at altitude.......but the OEM turbo is smaller than the one I just installed on this stage3. Its rank compared to my stage2 at same boost levels. And intake air temps were 7-11 degrees. Another benefit of the bigger turbo. Likely not for everyone as it has gone from a play sled to a climber now.
Safe sledding.
RS
 

Turblue

Active VIP Member
Joined
Sep 15, 2008
Messages
1,324
Reaction score
3,979
Location
Southern Alberta
Ok had her out again for a small test today. We removed the Baro Fuel Adjustment as it was running rich once we went past 1000 meters. Ran crisp and clean as it should. Pulled very hard and in fact was too fast for me to get a good read on much instrumentation. RPMs were in the 8800 range and boost was 14/15 on a larger 19T turbo. Will increase to 17-18 and add some upshift for the next test. Im sure it will be as powerful as I ever need. You can see the new CR Hood which is about 10lbs lighter than stock, new Seat hopefully coming from Yamaha next year. 1.5"lower and has some storage. About 5lbs lighter. Going to add some graphics cause I think its a bit plain. Overall very happy and getting it developed for some chute climbing.
Safe sledding
RS

Looking great Randy!!!
 

Tuesday

Active VIP Member
Joined
Nov 16, 2008
Messages
264
Reaction score
199
Location
Lacombe
Ok had her out again for a small test today. We removed the Baro Fuel Adjustment as it was running rich once we went past 1000 meters. Ran crisp and clean as it should. Pulled very hard and in fact was too fast for me to get a good read on much instrumentation. RPMs were in the 8800 range and boost was 14/15 on a larger 19T turbo. Will increase to 17-18 and add some upshift for the next test. Im sure it will be as powerful as I ever need. You can see the new CR Hood which is about 10lbs lighter than stock, new Seat hopefully coming from Yamaha next year. 1.5"lower and has some storage. About 5lbs lighter. Going to add some graphics cause I think its a bit plain. Overall very happy and getting it developed for some chute climbing.
Safe sledding
RS


With the extra boost are they going to have a slightly higher RPM target range? Say 9200?
 

Lunch_Box

Active VIP Member
Joined
Oct 25, 2007
Messages
1,464
Reaction score
5,903
Location
Leduc County
Ok had her out again for a small test today. We removed the Baro Fuel Adjustment as it was running rich once we went past 1000 meters. Ran crisp and clean as it should. Pulled very hard and in fact was too fast for me to get a good read on much instrumentation. RPMs were in the 8800 range and boost was 14/15 on a larger 19T turbo. Will increase to 17-18 and add some upshift for the next test. Im sure it will be as powerful as I ever need. You can see the new CR Hood which is about 10lbs lighter than stock, new Seat hopefully coming from Yamaha next year. 1.5"lower and has some storage. About 5lbs lighter. Going to add some graphics cause I think its a bit plain. Overall very happy and getting it developed for some chute climbing.
Safe sledding
RS

Any better pics of the hood and seat Randy?
 

Tuesday

Active VIP Member
Joined
Nov 16, 2008
Messages
264
Reaction score
199
Location
Lacombe
Doubt it. No need as the motor is 100% stock with all the forged parts required. So the RPM will stay at the OEM levels.
Interesting, would like to see this sled in action. When is yamafest again? Will be out this weekend that not really sure for the following weeks.
 
Top Bottom