Silber turbo update map

bk720 · Nov 17, 2014

Hey guys just curious as to what the new map fixes and if it is a must to do.
I have the original tune still that first came out with the bullydog.

Thanks guys

adam5187 · Nov 17, 2014

I just updated mine to the new tune. I was talking to a silber dealer and he basically said that it keeps your power valves open longer so they dont close between throttle stabs causing the bog that some had. I didnt really have it happen at low altitude but had it bog a few times in the mountains. If yours didn't have the bog i am not sure if you need to update it.

AndrettiDog · Nov 17, 2014

I have the updated map and still have bog issues. Still seems like I'm getting too much fuel under load. Not fun when you are trying to have fun. When you are in the deep snow it feels like the sled loads up with fuel and can't burn it. I could be wrong, but I'm not wrong about the bog still being there.

friscospices.com · Nov 18, 2014

Check your clutching. I mean tear it a part and give it a good once over. I would bet lunch your problem is not your map if it ran good before. Also look at your plugs I had one a few years ago that had me chasing my tail.

AKFULLTHROTTLE · Nov 18, 2014

I just went to the new ECU flash and injectors and it ran flawless. This is coming from a Dobeck 4 injector setup and having a bog from WOT to WOT. Bog is gone and ran perfect!

Love it so far!

Boston Racing · Nov 18, 2014

I am working on some troubleshooting procedures for those still having issues. The new map has fixed most of the affected sleds but there are a few still having symptoms. It make it extremely tough to troubleshoot something that affects such a small number of sleds when they should all be identical.

AKFULLTHROTTLE · Nov 18, 2014

And so many variables, even outside of tuning.

AndrettiDog · Nov 18, 2014

Plugs are a good one. I'll check that. I really doubt it's clutching. Here's why...It runs like a mofo when the sleds on hard packed snow. I can't hold the throttle down it's scary. But load it in a ton of powder or on a side hill (blurping the throttle) and it gags. If it were clutching, I'd expect it to still burn smooth but not hit RPM's. Am I wrong?

tdorval · Nov 18, 2014

Mine ripped on hardpack but had issues in deep snow when it was a primary issue. Thoroughly check that both clutches are functioning perfectly.

Boston Racing · Nov 18, 2014

I had a sticking primary on my 12 and it wouldn't backshift causing it to act crazy. Pull the cover off and see if the sheave moves back and forth easily.

acutah · Nov 18, 2014

AndrettiDog said:
Plugs are a good one. I'll check that. I really doubt it's clutching. Here's why...It runs like a mofo when the sleds on hard packed snow. I can't hold the throttle down it's scary. But load it in a ton of powder or on a side hill (blurping the throttle) and it gags. If it were clutching, I'd expect it to still burn smooth but not hit RPM's. Am I wrong?

I know it sounds crazy but mine was the exact same. It was an absolute freight train on the trail. Never ever messed up. As soon as it got loaded in the powder in and out of the throttle it would mess up. This was even after the new tune. The new tune was a noticeable feel to the sled though.

Check your primary!!

AndrettiDog · Nov 18, 2014

Corey, how do you have the clutch setup now? I think we are set for roughly the same elevation (9-11k).

Boston Racing · Nov 18, 2014

Red, Red, Red weights in the Primary, Pink or Orange Spring and I am using the shallower side of the helix.

kgra · Nov 19, 2014

Does anyone else have the issue of the engine bogging when going from idle to Wot with the track in the air ( on a stand or jumping sled and going from brake back to throttle)? I have the new map.

AKFULLTHROTTLE · Nov 19, 2014

Hmmmmm, When was your last reed change?

Boston Racing · Nov 19, 2014

They will rarely run clean on a track stand because there is no load and without load the turbo cannot build as much heat. The systems are tuned to run with both the sled and turbo at operating temp. If you pin them and get them hot they will run clean on the stand but running your track at 80mph with no load may cause other issues. Jumping isn't an issue unless you pull the rope after letting it cool down and try it in the first couple minutes.

AndrettiDog · Nov 19, 2014

I also have an issue when I first start the sled. It takes about 15 seconds for the sled to "clear its throat" before it sounds right and will engage. I've even had an issue with the sled not starting for awhile after running it hard for some time. Like a carbed sled that is flooded. Once again, this is why I don't think it's related to clutching.

sledhead9825 · Nov 19, 2014

And so it begins

Ski-Dont89 · Nov 19, 2014

AndrettiDog said:
I also have an issue when I first start the sled. It takes about 15 seconds for the sled to "clear its throat" before it sounds right and will engage. I've even had an issue with the sled not starting for awhile after running it hard for some time. Like a carbed sled that is flooded. Once again, this is why I don't think it's related to clutching.

mine did the exact same thing last year too. mine always started but did the rough idle upon start up that you are talking about.

kgra · Nov 19, 2014

Reeds look good but im replacing them anyway. My concern is even with the sled fully hot ( steady riding for half hour). when i take long jumps and need to stop the track while in the air (which causes rpms to come down to idle sometimes) when i smash the throttle to get track speed back up to ground speed so i dont go over the handle bars on landing the sled bogs around 4500rpm and wont rev through 5500 rpm.

Silber turbo update map

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