Yamacharger Question

[jaydaniels]

I have a Yamahcharger on my sled now and it seems to work as promised. My question is, would any gains been seen with a less restrictive exhaust along with the yamacharger. Something like an excell. Or does the motor need a certain amount of backpressure to see the gains with added boost. I'm sure this is not a simple answer but had to ask.

 

[nate007]

If you reduce the restriction on your exhaust, you will likely see a drop in boost pressure, but sepending on what else you do in the way of tuning (clutching, fuel, etc) you could see an increase in power, but it might not be that much.
I'm not really familiar with the Yamachargers, but do they even have a fuel tuner with them? I thought I had heard that they don't? If that is the case, an exhaust will likely lean it out even more, and you may need some sort of fuel tuner to add fuel. If you end up doing all that, you should see some sort of power gain, and/or at least a sled that sounds better too!

 

[Macheater]

In theory the ECM should read the added pressure and add fuel accordingly. Although, I'm almost certain that some shops (Ulmer, CPR) were getting additional hp out of them with the addition of a pcIII and ignition box.

I know there were a couple guys at one time that were running aftermarket exhaust with their yamachargers. Maybe they will chime in.

 

[jaydaniels]

Ok, thanks for the info. I was thinking the same, if I go with exhuast likely need fuel control as well.

 

[Some_Boost]

i just installed a yamacharger with a mbrp exhaust and a pc5 with a map sensor works great.

 

[nate007]

The stock engine has no way of reading additional boost pressure. The sensors on the sensors on the throttle bodies are mainly for altitude compensation (minimal at best) and idle correcton on the Nytro's.
The yamacharger is so little boost, that they're relying on the sleds' inherent rich tuning to be enough. Much over 3psi and you need a controller.

 

[kviper]

The stock engine has no way of reading additional boost pressure. The sensors on the sensors on the throttle bodies are mainly for altitude compensation (minimal at best) and idle correcton on the Nytro's.
The yamacharger is so little boost, that they're relying on the sleds' inherent rich tuning to be enough. Much over 3psi and you need a controller.

Actually it does. The atmospheric pressure censor (altitude compensation) after the YamCharger install takes it's reading from inside the plenum instead of out so it's compensating for the additional pressure from the YamCharger but yes it's is only good to 2 psi or so.
My opinion on exhaust is it's the poorest HP gain per dollar there is on these sled's and depending where you ride they are one of the biggest contributor's to trail closures.

 

[kviper]

Exhaust are not cheap especially for the very minimal gain. For near the same price of the exhaust you can get a PC-5 and ignition box that way you can add some timing on the bottom end for better throttle response, bump up the rev limiter a couple hundred RPM and add the riming pull back that the computer pulls out over 10,800.
This way you will have better throttle response with actual gain's on top.
Ulmer Racing has the whole set up all programed and ready to go for the YamCharger.

 

[jaydaniels]

Exhaust are not cheap especially for the very minimal gain. For near the same price of the exhaust you can get a PC-5 and ignition box that way you can add some timing on the bottom end for better throttle response, bump up the rev limiter a couple hundred RPM and add the riming pull back that the computer pulls out over 10,800.
This way you will have better throttle response with actual gain's on top.
Ulmer Racing has the whole set up all programed and ready to go for the YamCharger.

Thanks for the info. May go this route.

 

[jaydaniels]

Would this work. I see someone on here has it for sale.

POWWER COMMANDER PC111 AND IGNITION MODULE

 

[kviper]

I think it would as long as it's for your sled, then you could send it to Allan Ulmer so you get everything programed right. The pre 2011 Apex's use a PC-3. And the 11 and newer require PC-5.

 

[korgull]

I have a nytro charger, and I put a hindle full exeaust, had more torq, but law enforcement made me remove the mufler (I was lucky they did not open the hood). I put back the stock exeaust, the result is less torq but better throtle response as waell as aceleration, so from my result do not waste money with an exeaust if you have the nytro charger it also come with a fuel controler ''gem'' that work well.
the next step I will do is put a scmidt bros stage 2 clutch and maybe the stealh exeaust mods, and I will talk with ulmer to know if there is more gain to put in with a power comander 5, if so I would have him made 2 maps one for performance and one for cruising for fuel economy, there is a switch map that alow to change map while riding.

***Hindle exeaust is a superb exeaust that will give you the 15 hp advertised, it did with my rb 3. but with the nytrocharger, you get about 20 hp for both, with more torq to lift the front end, but the nytro charger alone is less torq with beter acceleration and throtle response, so you have to chose between the 2, it is not a waste of cash for the exeaust, the waste is for either one of them if you combine, nytro charger gives you that only at hight rpm, I am able to be in front of an artic cat f1000 from ) to 155 km/h 97 mph, then the other sled come in and passes me.

 

[korgull]

excuse me, my error, everything I said does not aply to the yamcharger because its the same as a supercharger, I missread I thought it was the nytrocharger that is on the secondary pulley.
sorry