Thundercat Hp DynoTech

[SideHogger]

211 hp for 0 mile Thundercat! Let the games begin!

 

[Doowithblue]

Leaner A/F for whatever reason. 11.5 vs 12.5 on the Cat. This contributed to more hp along with some ethanol content in the Cat.

 

[Byam]

This is very nice

Production sled?????

 

[MrSled]

Can you post the data to support that?

 

[Snowaddict]

Oh, please don't tell me that I should've bought the cat version. Darn it! Yamaha clutching and ecu tipped the scales for me. Hopefully production models will be similar. Otherwise I will never hear the end of it from my cat buddies.

 

[MrSled]

Well I would stick with a 204 hp verse a 210 hp if there was a risk with those AFRs being too lean with the wrong fuel.

 

[uprider800]

Wow 210 on a new motor is awesome. Sure glad I spring ordered cuz this new Yamaha motor is going to be a beast. It was 90 degrees here this weekend but me and my buddies were talking sleds. 2 of us are getting new Winders and another is boosting his Doo 1200. Think Snow!!!

 

[Shagnos]

percentage of ethanol??

 

[**sj**]

same motor...same ecu...same exhaust......maybe the 204 with the leaner afr was the pre production and the new is the production model...

 

[Shagnos]

The cat was leaner with a 12.5 afr

 

[Snowaddict]

The more I think about it, 7 hp difference seems to be pretty large. I can see a couple hp variance, but more than 5 is quite a bit. Especially if we're talking same exact engine and amount of boost. You usually have to do an actual mod to get an increase of 5 hp on most sleds (exhaust, etc.) Correct me if I'm wrong.

 

[SideHogger]

Guys, if you want all the facts, please support DynoTech and sign up for a subscription. Jim is a great guy and deserves our support for all the info he has given out all these years. He claims early production sled with 0 miles! If that's the case, imagine what that sled will make broken in!

 

[Shagnos]

Just a degree or two of timing and tweaking the afr can make a big difference. A more aggressive tune (timing,afr) could do it. But now
you are closer to the edge if you get some crap fuel.

 

[Sledroll]

Just a degree or two of timing and tweaking the afr can make a big difference. A more aggressive tune (timing,afr) could do it. But now
you are closer to the edge if you get some crap fuel.

Doesn't it correct for bad fuel ?

 

[Doowithblue]

Sensors cannot adjust for pre-ignition. Lots of good reading. Well worth the annual subscription.