Ok i have a 99 polaris 400 sport when i got it the stock motor was fried! So i took a 90 Polaris 400 double and cramed it in it. It euns great idles great problem im havin is when i put it in forword it jumps out of the hole but once i hit like 15 mph it acts stupid like its a carb issue but its nothin with motor because when i put it in Reverse it comes alive!!! I mean stupid fast in reverse almost like forward abd reverse are switched the guy i got it from had his hands in the trans any ideas?

 

Replied to your other post on removing the black wire from the reverse limiter to see if this helps. You only need to post once.Members will find your post.

 

Ty its my first time