is this to rich. i pulled my dmc duals off and put the factory pipe back on and drove it. it seems to run good. do you think i need to rejet back to stock. thanks for the info.

 

Depends on your altitude. This is the stock jetting table for different altitudes.

0-1600 FT 135 F / 140 R
1600-4900 FT 132 F / 138 R
4900-8200 FT 130 F / 135 R
8200-11500 FT 128 F / 130 R
11500-14800 FT 120 F / 125 R

The only way to really tell if you are rich is to pull a plug and see what it looks like. If its white its lean, if its black its rich. There was a really good link here on here one time on reading plugs but I cant find it again. Hope this helps

 

Your not much above stock jetting at 138-142. What do your plugs look like?
If it is a little rich, put some adjustable air vents in the air box.