I have an almost stock 05 quad 4x4 with the silencer ring missing and a smarty. I have been running on #9 for about 2 months now with no problems. I did not do any power launches and only take out a few red light racers. I love the smoke and the power but am wondering if there is a better download out there.

 

check out madselectronics.com and look at the downloads section. there a bunch to choose from. but ide be careful with what you choose to play with on a stock tranny.