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Cold Weather VS Tunes (Race)

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Turbo Dynamics said:
Dyno... Btw guys the motor that went down wasn't on a td tune fyi. We don't want to mixed in that story. We do test our tunes in all weather from - 40 Celsius to +10 for the trail tunes and +35 for the summer race tune.

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What kind? Track or engine
 

31cccat said:
What kind? Track or engine
Click to expand...


Track I beleive at his shop but it has also been tested on other dynos that I know of.

Jester
 
Nate68 said:
The Facebook post was mine. I took it down because it got way off topic and I was sick of my phone going crazy. It was 91 octane non ethanol fuel not bar gas. I hauled it to Bergland with a full tank of fuel and rode to Lake of the Clouds from there(on the same tank). This flash was done at a dealer along with the exhaust and clutching. I did not ask a question in my post nor did I bash anyone, I was simply venting about my shitty trip and making awareness. I called the dealer this morning and was calm and listened to what they had to say. I have raced and pushed the envelope on engines before and know the risk. It sucks that it ended up like this after 1 day of riding but #*$&@ happens. And as far as long as WOT runs that did NOT happen at all!! There were so many sleds up there and poor trail conditions that WOT was not happening. Also we off loaded in Bergland on the North side of the Lake... So no WOT lake runs either. Would have been fun though to see what she could have done because it was a beast up to that point.
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I'm really curious what happened once you get it apart. If what you are saying is true I don't think it is tune related at all, everyone just assumes it. Unless you were just cruising steady state at some weird boost level that has a lean spot. We were running 1/4 mile plus yesterday in 0F degree weather on pump 91 WOT no issues and wicked fast. Sorry for your troubles, I had the same thing happen last year on my 1100, that was self inflicted!
 
Pstn head said:
So having said that ( cruising at a steady speed... ) would it be better to vary rpm's and speed especially when temps are fridged like we're experiencing ? And also when temps go back to normal? Or just ride normal? assuming we have good gas. What if you think you picked up some bad gas, should riding style change to minimize risk? Obviously no WOT runs if gas is questionable.
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If the temp is rising on the sled I would vary the throttle and the speed. Fluctuating the throttle will dump more fuel cooling down the cylenders. If you don’t see the temp dropping and it continues to rise and gets too high I would consider pulling over.
 
This isn't a 2 stroke it should be able to cruise at all speeds and throttle positions and hold that for as long as desired.

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The hp on our flashes are measured acutely on a dts4000 engine dyno. This is why our hp ratings are lower then others while the sleds are faster. We don’t estimate the hp at the engine.the engine dyno has also bred instrumental in developing the new knock detection and protection system set to be released with all hurricane flashes next week.
 
Furthermore... We push the TD tunes well beyond 5000feet and do it back to back. Not just for tune reliability testing but for clutching and performance. Nothing shows pure sustainable safe power more than a maxed out top speed.

Heres a test we did last year on td powertrail v1


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So is there factory knock protection on these 998's? With some of the crazy cold some areas are seeing, there has to be some sort of fail safe built in.
 
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