2013 Assault. Bogging - Snowmobile Forum: Your #1 Snowmobile Forum

CranktheBoost · 12-24-2012, 09:46 AM

I recently picked up my new assault and I put a MBRP can on it immediately.
Recently ive noticed that its been bogging a bit or a back fire of the sort when id go to pin it hitting a jump or drop. when i slowly put it wide open it wont happen but only when i crack it. Anyone else having this issue?

white lightning · 12-24-2012, 10:39 AM

Not sure of the exact issue - give it a more run time to have a proper break-in period. Hopefully it will run better as you put more miles on it. Anyone? WL.

CranktheBoost · 12-24-2012, 10:51 AM

Yea im hoping its something minor like that. Thanks for the imput

**RJ Gleason** · 12-24-2012, 06:21 PM

On many sleds with EFI/CFI, adding an aftermarket exhaust part will actually cost you performance as it changes the back pressure and causes the engine to run lean in the mid range.

CranktheBoost · 12-25-2012, 02:56 PM

so if i brought it to the dealer could I get them to reflash my fuel map?

**RJ Gleason** · 12-26-2012, 01:05 AM

I doubt that it would fix the problem as any fix in the mapping would be for a stock exhaust set up.

white lightning · 12-28-2012, 07:45 AM

Im not really sure how true that is - my understanding is that the pipes is deals with the back pressure and the sound waves - the cans deals with the noise levels. I could be wrong - ANYONE? WL