Help needed: MPI Supercharger in bumps & high speed mile

[chunkydunkin]

Guys,

Looking to go from a stock Apex to a supercharged Nytro RTX that will run low boost on pump gas. I wanted to know how a super charger handles trail conditions in areas like Michigan's UP. My best characterization wold be potentially medium sized bumps with trail speeds on average between 50-90mph. We ride between 3-4k miles per year. I am just a little leary about dependability more than anything. I don't want to miss weekends with tear downs. I know most guys talking here are in mountain conditions which are stressfull, but in a different ways. I am really concerned about the constant hard rapid pounding the unit will take and the sustained boost during high speed trail conditions. Any insight members can offer wold be greatly appreciated.

 

[racinstation]

I would recommend a S/C stage 1 kit with the RB3 upgrade kit. This would give you plenty of power and throw meth on there, you could run it with pump gas.

 

[bojans]

I ran into a guy at the Hoop in Bergland (Meriweather) this weekend who was running an Apex with a blower. Had 6000 miles on the motor untouched and ran trails all day. Everyone in his group (they were all running bone stock sleds) said it was very trailable. 6000 trail miles under boost is a fairly impressive testimony to the reliability if you ask me.

 

[kinger]

The SC's seem to be the way to go for reliability on a trail like what your talking about and what I also ride. Front mounts wont hold up the long haul maybe a season or two before it cracks. MCX also seems to be bullet proof, but if you want stock exaust sound you need to go MPI.

 

[rxrider]

Sorry the MCX rearmounts are far from bullet proof, they suffer all the same issues to the headers and exhaust parts as the front mounts. A few examples: cracking flex pipes, cracking stock Yamaha Y-pipes, cracking MCX Y-pipe, melting plastics in the rear, water in the air filter from beeing to close to the turbo, condesation in the MAP sensor hoses. The exhaust parts can be welded, but not the flex pipes. Out me and my friends 4 MCX turboed sleds 3 of them had cracking exhaust parts, I was the lucky one not cracking anything.

 

[kinger]

Cool thanks for the info RX!

 

[rxrider]

MCX have about 99% of the market over here in Norway and Sweden. We know of the issues the MCX kits suffer :-( We ride em hard on trails that never sees a groomer all winter November to May that may why the we have managed to crack the exhaust parts on the MCX kits.

 

[millstreet]

I am really concerned about the constant hard rapid pounding the unit will take and the sustained boost during high speed trail conditions. Any insight members can offer wold be greatly appreciated.

3000 boosted miles - 0 durability issues

Getting everything sorted out initially will take some weekends, after that they're pretty trouble free

Make sure you have good fuel - 87 octane and any boost = KABOOM