975 tuning

[nytro circus]

Well the 975 is back together and we have new snow
Ive added my BD box first time i have ever used one i was told #42 is the # to use but it just keeps fouling plugs any help please i dont want to take it to far

 

[Franz]

Saw some of your old posts to get familiar w/your setup. Mine never liked any changes at all from the carl's programing. It always ran best exactly the way carls recommended. That is 50/50 fuel mix, and zeros on the B/D box. Plugs lasted 1 season this way. Guess I can't help much if your running premium.

 

[nytro circus]

Im running the 50/50 i finally got back home and got it back together after we last talked i lost a piston so im back home and got it back together just in time for the new snow over the hood powder from what i hear in McCall and got her fired back up today and set it at #42 and fouled my plugs set it at 30 and same thing so thanks for the post Franz i have not changed the compression yet im waiting for next year when i have a new back up sled.

 

[diamonddave]

Are you saying you've raised the numbers at the different RPM settings from 0 to 42 ?

 

[guidoxpress]

if it were me..i would start at 0 and work your way up..

are you running A/F or EGT gauges??

 

[nytro circus]

Just EGT's 0 seemed to be about perfect i didnt ride it much i will save the it for next year we had about 14'' of new just enough to hide the rocks and stumps.

Thanks for the help guys.