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Hammer, I assume you have spoken with Mac or Al but I'll give my 2 cents anyway. Did you have any codes flashing on your gauge? My guess would be that you did and that it was a TPS code. Sounds like a possible ecu issue. Your symptoms sound like a similar situation we duplicated while testing...

Let me take this bag of snakes and lay them out straight for you guys. First of all let me clarify who I am so no one is confused. I am the R&D Director at MPI. Myself and Mac (the owner) designed the entire kit so lets start from square one. This post is not directed at Darko, I'm just going...

We are shipping stage I now. Stage II will be shipped next. It isn't a matter of finishing the kit at this point as we have finished all but a few minor components, we initially under estimated the amount of stage I kits that we would sell and have just been overwelmed with the stage I kits that...

I beleive frustrated is exactly how I feel as well. I understand that there is all kinds of info about fuel requirements, compression ratios, timing, engine mods, boost levels and EFI controls coming from everyone and it always seems to contradict someone else so I will try to simplify the...

200 hp on premium fuel with no engine modifications. 240 hp with 50/50. These numbers are not requirments as much as they are recommendations that we have choosen for liability reasons and are way with in the safty margines. Now this doesn't mean that you can't run 240 hp (10 psi) on premium as...

I'm always relaxed. If fact I'm meditating right now. LOL.

I thought I was in charge of R&D so I'm wondering who at MPI told you that the fuel pump and inj's are different on the production unit? The fact is that the fuel pump is the same as well as all the sensors. The inj's do have a different part number but we are still testing to see if they will...

Stock pump and inj's not stock fuel pressure. The stock inj's and fuel pump are plenty capable of supplying fuel for 10 psi of boost and stay well with in specs for both. As you may know Yamaha has a habbit of over building and over designing.

We are currently accepting deposits on Stage I superchargers for the Apex, RX and Vector which will be shipping in early fall. We will be accepting deposits on stage II in the next 6 weeks and will ship these kits in mid fall. We are currently working on Stage III which will be available in...

I would estimate hp at 12 psi and 3 gaskets to be in the area of 245 + or -. We have a customer that got one of the first systems we offered for testing that has high compression pistons (wisco high comp with 1 stock head gasket) and is running 50/50 at 10 psi for over a year now with no issues...

Sorry for late reply Yes stacked head gaskets will work with the sc and premium fuel. I think we are missing an important aspect here. 10 psi is 10 psi is psi, which means that roughly speaking 10 psi sc boost is the same as 10 psi turbo boost, the engine only knows how much boost it is...

The unit next to the intercooler is the oil air seperator. The stock unit is in the air box.

We don't really want the blower temp to raise over 185 to 190, however it will accept short runs up to 200. The warning light comes on between 180 and 190. Under normal condition the sc runs around 165 to 170.

You can never have to much info. We recommend a min of 3 gauges: most important is water temp, next blower oil temp, then wide band a/f ratio. Exhaust temp is good as a reference but not absolutly necessary because of the acuracy of the wide band o2. If I could I would have a wide band on my two...

I think so, I will have Mac call you for details.

It is true that response is much higher on s/c'd sled but it is very managable on tight trails and for boondocking, infact that is where it shines the most. You simply use less throttle comparativly than you would have. The system is making a min of 2 psi boost at clutch engagment and around 6...

I wasn't in Jackson this weekend, we were riding around Salt Creek doing some testing over the weekend then at TJ's in Alpine on Mon and Tue. We did demo ride on the 06 yamaha lineup as well as letting people ride our sc'd sleds then rode with TJ and Doc Zoom on tue while they filmed Mountain...

TJ has one of our s/c's running, I wonder if he has ran his two sleds? Keep in mind that we are not there to run against anyone, just show our sleds, answer some questions and ride with everyone. If that leads to a little racing so be it but we will have no chance beating a turbo with 16 psi...

People have been asking for deals on s/c's and I have aquired 4 units for sale to internet customers for $4100.00. Anyone interested please pm me. Side note: We will be at TJ's in Alpine, Wy on mon for the apex demo ride and to allow people to see our sleds and ride with us. We are looking...

It's cool Hottshot, I didn't take it negatively. I was just commenting that I think I know who the competition is.