How to tell if your sled is clutched properly. Easy peasy.

[RJP]

My 2016 M8000 pulls 7800rpm on hills, bone stock with a can. Should I bother messing with weights to get that extra 200rpm? Or more? I don't even know where it should pull at for peak performance.

63s should do the trick!

 

[kanedog]

It's best to tune for rpm just a hair on the backside of hp/tq curve. This way if the sled encounters a heavy load, like wet or deep snow, the rpm may drop a bit but the hp will be more. It makes it hard for the sled to recover if the rpm is on the front side of the hp/tq curve.
A good saying to remember is "It's hard to fall up the stairs than to fall down the stairs."
Hope that makes sense.

 

[Bnorth]

my turbo always runs to 8000 quickly but slowly starts to fade under load down to 7400

Stock thermostat? Could be heat soaking and pulling timing. Powderfreaks/Trygstad/Engine tech thermostat helps with is if that's the case.