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  1. matt@mpi

    Factory turbo, oil problem!!! WARNING!!!

    They don't. The check ball freezes to the top and the only place the oil can go is out the vent line.
  2. matt@mpi

    Factory turbo, oil problem!!! WARNING!!!

    This problem has nothing to do with the turbo.
  3. matt@mpi

    MPI Supercharger failures

    6'2" 180lbs so not that big? Did you leave a message and number? I try to call everyone back, even if that's means working 12-14 hour days. Send me a PM or email.
  4. matt@mpi

    Blown Viper Motor. Diesel fuel.

    That was one of many runs that were made at WOT over several days. So many variable can go into the failure. It's hard to comment on what happened without knowing more details?
  5. matt@mpi

    MPI Supercharger

    Something to keep in mind here 1.We've sold Yamaha a lot of superchargers over the last few years and what failures that are visible to everyone on these forums represents a very small percentage of total units in the field and working properly. 2.Over the last few years building and selling...
  6. matt@mpi

    MPI PERFORMANCE INC.

    Because a Rhino has a mounting ring on it and that's the way it came in! But a Rhino and a Apex both use a pulley that is attached to the blower with different clocking. So (internally) we refer to them as being the same. I need to convert a Rhino/Apex the same way.
  7. matt@mpi

    MPI PERFORMANCE INC.

    Apex/Rhino are the same. You had a used blower sent to us that's not for a Nytro then you sent down your Nytro blower that was broken right? I could have taken off all of your old bearings, shaft,seals, etc off your old blower and reinstalled that on your replacement used blower. But instead we...
  8. matt@mpi

    MPI PERFORMANCE INC.

    There's always two sides to every story. I need to focus my efforts at taking care of current needs not someone who bought a used blower from a Yamaha Rhino and wanted it to work on his Nytro?? When I get some time I'll explain what happened.
  9. matt@mpi

    Mpi waste gate brakes broke...

    Based on the muffler this is one of the earlier kits. The first 50 kits had aluminum brackets for a waste gate support. Then we switched to Stainless Steel mounts from that point on. If you or anyone else need one a quick phone call, PM, or email and you can have one.
  10. matt@mpi

    MPI turbo backfire

    Your just trying to help!
  11. matt@mpi

    MPI turbo backfire

    This WON'T apply to any of the Yamaha kits that shipped this year!!! The controllers used last year has a different base setting and those numbers could be a problem. I know your trying to be helpful but the fuel maps are too different. Please don't make adjustments without a QUALITY AFR gauge...
  12. matt@mpi

    2015 VIPER MTX/ MPI TURBO ISSUES

    That's going to help a lot.
  13. matt@mpi

    MPI turbo backfire

    When you hit the rev limiter it cuts ignition but still is dumping fuel. So all that un-burnt fuel collects in the muffler and gets hot enough to combust. That's were the back fire is coming from.
  14. matt@mpi

    2015 VIPER MTX/ MPI TURBO ISSUES

    Your sled needs clutching!!! Just like I told you in a PM. When you hit the rev limiter it cuts ignition but still is dumping fuel. So all that un-burnt fuel collects in the muffler and gets hot enough to combust. That's were the back fire is coming from.
  15. matt@mpi

    SR Viper MPI Turbo Owners

    Thanks for pointing that out. We've made 1000's of these and if we missed a few I'm sorry. It's easy to check now before its installed. Sorry Butch! We'll work on our SERIOUS fit and finish issues.
  16. matt@mpi

    The flaw is in the oil air separator that Yamaha/cat uses. It's a vent so way does it have oil...

    The flaw is in the oil air separator that Yamaha/cat uses. It's a vent so way does it have oil running through it? We move it to the other side of the sled which doesn't help the problem but it by no means makes it a MPI problem alone. .Yamaha also added 400cc of oil to the sled this year over...
  17. matt@mpi

    plumbing the vacuum on boost controler

    The middleport goes to the airbox. The side port goes to the actuator. We put a cap on the compressor.
  18. matt@mpi

    plumbing the vacuum on boost controler

    Don't know what pluming your needing.
  19. matt@mpi

    Still no turbo!!!

    I just packed up another prologger and hand delivered it for pick up today.
  20. matt@mpi

    Still no turbo!!!

    Sorry!! So you have your turbo? This whole time I've thought you didn't have your turbo! Sorry if I didn't answer the phone all the time, just don't have enough time in the day. I don't know what happened with the prologger? Everything has shipped out. I'll next day air a new prologger today and...


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