Anybody Added A Super-Charger Yet?????

[Yummy]

Who has MPI web site.

It use tobe http://www.mountainperformance.com/
but doesn't work anymore.

 

[Yamahammer485]

Try again, its working now.

Maybe their server was down, and its back up now, it happens sometimes, not only to this site, but others as well.

 

[Yummy]

Thank you, the website now working.

I took this from another forum:

Does the supercharger application still have the problem with Throttle Chop killlin and flooding the motor like the RXT's do ?

The reply was:

Darko as long as you run a pop off valve you'll have no problem when you let on and off the flipper. When you get a copy of the exhaust vid you'll here the pop off valve very clearly as i back off the throttle. If you do not use one the throttle chop i think your refering to will happen.


Now, My question is: Does the EFI SC has the Throttle Chop problem? if yes, does the MPI kit come with a pop up valve?

thank you

 

[Yummy]

a7m266d,

Almost forgot that one!

What replace the air box? Does the MPI kit provide something to block the hole?

Also if you have pictures, that would be great!

 

[TurboJamie]

Thank you, the website now working.

I took this from another forum:

Does the supercharger application still have the problem with Throttle Chop killlin and flooding the motor like the RXT's do ?

The reply was:

Darko as long as you run a pop off valve you'll have no problem when you let on and off the flipper. When you get a copy of the exhaust vid you'll here the pop off valve very clearly as i back off the throttle. If you do not use one the throttle chop i think your refering to will happen.


Now, My question is: Does the EFI SC has the Throttle Chop problem? if yes, does the MPI kit come with a pop up valve?

thank you

There is no blow off valve with the mpi kit and there is no throttle chop problems. This thing performs butter smooth.

MPI doesn't give you anything to cover the box I just used a thick piece of pourus foam over the IC. 99% of people that looked at it couldn't tell it was modded.

 

[TurboJamie]

One before with without foam this one is with.

 

[TurboJamie]

Front pic

 

[Bossman]

On my sled I modded the air box lid and apoxied it to the hood. Everything is hidden then.

 

[TurboJamie]

I was going to do that to but figured I would get maximum airflow though the cooler with the foam. Been in snow over the handle bars with no probs. Hey Bossman you got any pics of your setup? I went with the foam so that if we were at a radar run or something I could pull it out for even more flow. I sometimes even chill the cooler between runs to keep it cooler.

 

[Yummy]

Thank you a7m266d,

Very helpfull.

 

[Bossman]

No I dont have photos but will try to take some this weekend. i have to check out some stuff on the sled for someone else.

 

[ski-bum]

Hammer has the airbox lid mounted over his cooler with a bunch of little holes drilled in it for air flow. It looks stock until you look closely. He also runs a blow off valve on his. Nice setup, he has pictures of it posted on here somewhere.

 

[HAMMER]

Hammer has the airbox lid mounted over his cooler with a bunch of little holes drilled in it for air flow. It looks stock until you look closely. He also runs a blow off valve on his. Nice setup.

Hey Shannon......lot's of little changes.....next season should be a blast !!!

Personal install stuff (not part of MPI kit install)

I cut the top out of my airbox lid to fill the open space in the hood that replacing the airbox with the SC system leaves... I do like the stealthy look and the way it seals up factory tight around the headlight... It will definitely keep the engine bay from packing with that early season dry powder... There should be plenty of air flowing under the hood with the existing factory side vents and the twelve 1" vents I added to the nose cone... The only problem I see with the modified airbox lid is that it restricts airflow "through" the intercooler core... Air moving all around it but none "through" it... Didn't work exactly the way I thought it would... There is some space available under the intercooler for a fan, that way I could draw the air that is available "through" the intercooler core... Anyway, cutting out that lid was a flippen pain in the azz... Started with a hacksaw blade in one of those little blade holders after bending two blades I was getting irritable so I grabbed a box cutter deeply etched along the lines I wanted then snapped off the pieces... The plastic is that hard and brittle... If you do attempt the box cutter course of action be very careful not to cut yourself or crack/snap off more of the airbox than you intend to... I cleaned up and smoothed the edges with a file and some sand paper... I then installed the hood and lid piece on the sled then duct taped them together to hold the two pieces in place... I removed them as one piece and marked where I was going to drill the holes for the hardware... Removed the tape and drilled the holes... I used some #8 stainless screws/washers/nylocks to fasten the two pieces together... Not a masterpiece of engineering but it will work...

Installed a intercooler fan... It was a real-real tight fit but it works... Just wish it were a little more powerful... Still, it pulls air through the intercooler pretty good and blows down across the SC housing... All in all I think it was worth the effort... I bought a cheap fan at Radio Shack in case I change my mind an end up tossing it in the trash (see specs attached), Tranny Cooler mounting kit at Napa, and tapped into the factory accessory outlet wiring, which is already fused, for engine on power... While I was a Napa I also picked up a Raytech MT4 infrared thermometer with laser point targeting so I can take various temps (Engine, Intercooler, SC fluid, SC housing, Coolant temps, Clutches, and whatever else I can think of while I'm out testing.

Installed O2 sensor, Boost Gauge, Short Ram Cold Air Intake, BOV.

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http://www.ty4stroke.com/download.php?id=14431
http://www.ty4stroke.com/download.php?id=14425
http://www.ty4stroke.com/download.php?id=14428
http://www.ty4stroke.com/download.php?id=14429
http://www.ty4stroke.com/download.php?id=14430
http://www.ty4stroke.com/download.php?id=21675
http://www.ty4stroke.com/download.php?id=21676
http://www.ty4stroke.com/download.php?id=21677
http://www.ty4stroke.com/download.php?id=21263

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11,000rpm (26-24 pulleys) --- 10lbs boost (8000ft) --- 11.7 to 12.0 A/F Ratio WFO --- 6 MPG

Fuel Controller settings: (6500-8500 feet 20-40*F)

Note: If you do not have an A/F gauge these may not be right for your application.

2 -Pilot
4 -Needle
4 -Main
4 -Boost Fuel Adder
2 -Accelerator Pump
7 -Altitude Compensation

CHANGES:

P85 / TEAM / Supertip weights
Boost & Air Fuel Ratio Gauges
TurboXS Type S Blow-Off Valve (cut four coils off the spring)
Intercooler Fan
Built a Short Ram Cold Air Intake (www.turbohoses.com)
Stainless Steel Ice Scratchers (www.mountainperformance.com)
Hiperfax
Screening over all 4 side panel vents
Used dielectric compound on ALL engine bay electrical connectors (especially the ECU connector)
Mountain Addiction Gas Rack (www.mountainaddiction.com)
6" flexible LED Taillight (www.radiantz.com)
Miscellaneous holes for cold air to intercooler and SC reservoir
22-40 gearing (65-70mph track speed, a little hard on belts/clutches, easily attains full shift)
Removed the 12 UNI-filters I had installed in nose cap (SC fluid would overheat with them in)
Front straps in skid 2-holes tighter (steers a bit aggressive off-throttle but it's better for climbing)
Set rear skid springs to hard position and added Yamaha anti-bottom rollers to the rails
Transfer rods set to full rear transfer
Tighten & Adjusted track according to Yamaha specs AFTER making suspension adjustments
Trimmed muffler tub lip under tunnel so track lugs wouldn't catch on it at full "tail" compression
Front Shocks 8-turns tighter (10mm)
Widened ski stance to 39.5

 

[ski-bum]

Great post Hammer, thanks for the update! Sounds like you are ready for some snow so you can try that thing out.

BTW I have had good luck using a Roto-Zip to trim various plastic parts on my sled (high RPM tool similar to a Dremel, but made for cutting tile, cement board, sheetrock & such).

I am going to get my sled in for warranty items shortly. Hopefully after I get it back I will have time to add a few upgrades.

 

[HAMMER]

Ordered some bits-n-peices Tuesday for a little project......