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Here ya go. The 850 is a pre-production prototype with miles on it. The dyno was done with warm humid air (50 degrees / 80% humidity). The 800 E-Tec is a 2012 with miles on it and the 2013 re-flash.
 

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Which they do not come from the dealer like that. They always retard the timing from the manufacture.....longer engine life
 

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That's a good way to compare. Both sleds done on the same Dyno. No need to argue whether the numbers are high or low compared to another Dyno, this just shows the actual difference.
 

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Looks like a solid 10 hp and Tq across the board. That's a good 7% to 8% improvement. If the clutch is more efficient as well...you would see better than 10% to the ground. Will that increase blow your socks off? No. Will you feel it? Absolutely.

The G4 is also lighter too...so track hp to weight ratio should be up ~12% or so. Not bad at all.
 

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2010.5 163.4 "ringer" for sales

2011-12 155-156 pre timing bump

2013 157-158 pre timing

2014-16s will show 159-161 bone stock (new ecm, fuel curve,timing)

2017 at 171 bone stock is big!!-BJ

they ALL like timing (1 or 2 deg) except the 10.5
 

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So seeing this means that the 850 with a few mods is an easily 200+ hp motor right?
 

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The reason for the bump in 2015 and 2016 on the 800 Etec was the change in the head work.... here is D&D showing 164 at stock, and higher with a kit. Doo changed the squish dimension, and dome from what I was told. Similar to what some may buy from rk tech or d&d for other sleds mods
 

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Looks like a solid 10 hp and Tq across the board. That's a good 7% to 8% improvement. If the clutch is more efficient as well...you would see better than 10% to the ground. Will that increase blow your socks off? No. Will you feel it? Absolutely.

The G4 is also lighter too...so track hp to weight ratio should be up ~12% or so. Not bad at all.
Looks more like 170-155=15 hp more to me (not 10 hp). And wow look at the 110 ft-lb torque..........it makes as much torque at 6900 rpm as the 800 does at peak. That must feel good.
 

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It does. The 800 Etec never did it for me. Felt soft until higher rpm. First ride on the 850 I was sold. It has the torque down low I'm used to with my 1200's with way more topend over 70-80mph.
 

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Looks more like 170-155=15 hp more to me (not 10 hp). And wow look at the 110 ft-lb torque..........it makes as much torque at 6900 rpm as the 800 does at peak. That must feel good.
Just remember... when someone baits the hook, they use the best bait they have available early in the season.. when you sell something new at the start of the season.. Everything is 100% in the plus column, we shall error on the side of performance.. Later we shall error on the side of durability and reliability and reduced warranty cost.. Just saying not that I have ever been involved with manufacturing a vehicle for consumer use......

By the same token.. I think they are going to be better than where we are now and I may have spring checked one..
 

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The reason for the bump in 2015 and 2016 on the 800 Etec was the change in the head work.... here is D&D showing 164 at stock, and higher with a kit. Doo changed the squish dimension, and dome from what I was told. Similar to what some may buy from rk tech or d&d for other sleds mods
no changes in head...only a little tighter squish and a little hotter ecm, better ex valve check valve...

the dyno #s are only relative to that day...any dyno # comparrisons to other dynos are mute and irrelevant...

same day same dyno to even begin playing that game...BJ
 
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