So Confused, MPI 180 or 190?

[RED]

Nothing wrong with Autometer gauges. I have been using 2 5/8 liquid filled since 2005. In 2004 was using gauge that wasn't liquid filled, to hard to read.

 

[RED]

Nothing wrong with Autometer gauges. I have been using 2 5/8 liquid filled since 2005. In 2004 was using gauge that wasn't liquid filled, to hard to read.

 

[Studroes144]

I had aem boost and afr gauges, digital read out, they would fog after basically every ride, even if they didn't get wet or snow on them. Almost impossible to read during the day and 2/3 of the way through the season the boost gauge went wacky and showed screwy numbers. It was the gauge itself, everything on the sled was good.

 

[FAMILYMAN]

I personally think the mpi muffler is even quieter than stock which is great. Seems very restrictive once you turn the power level up though, but for the low boost trail kits it's great!

Restriction yes, I had to load my weights for the mpi loud can. Hitting rev limiter very quickly, but wow the power.



2014 viper, mpi
2009 Phazer 144"

 

[FAMILYMAN]

If you paid for the 190 with inter cooler, don't except that 180. Mpi or whatever brand IMO.


2014 viper, mpi
2009 Phazer 144"

 

[Dealerjohn]

If you paid for the 190 with inter cooler, don't except that 180. Mpi or whatever brand IMO.


2014 viper, mpi
2009 Phazer 144"

Not sure what you are saying. My wife asked for a MCX 190 kit. She received a MPI 180 kit, that is labeled MPI 190 from the dealer.. its going to be returned and a MCX will be installed on my sled.

 

[Studroes144]

Restriction yes, I had to load my weights for the mpi loud can. Hitting rev limiter very quickly, but wow the power.



2014 viper, mpi
2009 Phazer 144"

I know what you mean, my sled was set from last winter at 7 pounds with fueling right around 10.8-11 afr and mpi quiet muffler. After the new exhaust was made for my sled I took it out once this summer on the grass. Backed it down a full turn on the wastegate, fuel settings were all left the same and it was 85 degrees that day, afr's were bottomed out below 10, 6 #'s and it was hitting the rev limiter a lot, so just from that alone I can see how that quiet muffler restricts power. Just something for folks to consider when buying these kits, if you're looking for best performance go with a free flowing exhaust if it's an option.

 

[HURRICANE]

Thats exactly what we found on the dyno

 

[Mountaintech]

2 5/8" Autometer liquid filled is all I have used on every sled since 2003. Simple, reliable and easy to read.

 

[loudelectronics]

I replaced my autometer with the AEM. The autometer would not self zero at different elevations. The AEM does. I do have issues with fogging as well on the AEM. Just have to seal the plastic better.

 

[Mountaintech]

I replaced my autometer with the AEM. The autometer would not self zero at different elevations. The AEM does. I do have issues with fogging as well on the AEM. Just have to seal the plastic better.

No, it won't, but easy to adjust if needed. Just crack the outer case fill screw and tap gauge to zero. I hardly ever have to, but it is necessary every once in awhile.

 

[Mountaintech]

I'll start this with - In my opinion.

If its a decision between the MCX and the MPI kit there is no question that the MCX kit is head over heals better kit on many points. The only weak spot with the mcx kit is the fact they use the stock injectors - it could use more fuel on the top when pushing boost, but even saying that the fuel controller with the MPI kit doesn't hold a candle to it. I've done quite a bit of turboing the past number of years - Installed several kits on the viper, but stayed clear of the MPI kit after investigating it.

One of the biggest advantages is the install - its way easier, and nothing lost going that way.
The quality of the mounting brackets and oil lines, the way mcx installs there is very little chance of problems down the road.
Muffler is quiet as stock with the standard kit and flows enough to still make power at high boost levels. If you decide to turn it up, I've purchased a inter cooler from MPI, and used a power commander with larger injectors and is a very affordable way to get 250 hp
MCX uses a real Mitsubishi t16 (t19 on the 270 kit) turbo that makes good power and is cheap to repair down the road.

Now if comparing the MCX to the Hurricane kit - its a much harder comparison - because where one has downs - the other has ups and the downs of either kits are not really that big of deal.
If you were to purchase either kit, you would be very happy. I must say the best part of Hurricane's kit is his fuel mapping and the larger injectors with the PCV, he nailed the fueling with it. His quiet muffler is really quiet as well.

Here is another undeniable fact when it comes to comparing MCX to MPI. MCX was producing turbo kits long before the 4 stroke Yamaha snowmobile came on the scene. MCX has been building turbo kits for the Yamaha 4 stroke sleds since 2002. MPI has only been building turbo kits for the Yammys for 3 years. Prior to that they were always fiercely pro supercharger, and arguably anti turbo. I have had MPI and MCX products in the past and was happy with everything I bought. I think it is fair to say that there is still not a perfect turbo kit out there, even though it has been 10 years since Yammy introduced fuel injection on their 4 stroke sleds.

 

[Yamadog]

I made a thin gasket for my AEM AFR gauge and then used a touch of silicone on the threads of the cap when I put it back together and 3500 miles with no issues fogging. AEM uses the same Bosch censor that most of them us.

 

[Dealerjohn]

So for those of you with something other than an MPI turbo kit, where are you placing the bung for the Air Fuel Ratio gauge? Would a gauge come with the proper bung or is this something I'll need to purchase separately?

 

[Yamadog]

All of the ones I have bought, more than 6 came with bungs.