Originally Posted by MattP

Guys I'm still having an issue on my B5. I bought it used along with a B6(which runs GREAT!) and I can't seem to get a low end bog out of the B5.

I'm running a os p4 plug, losi nitrotane 30% fuel and a 2013 pipe. I have it in a losi 2.0 buggy. At first I thought it was I had too soft of a clutch spring setup in it causing it to bog but I have changed springs today and still can't tune it out. The engine runs excellent once you get to half throttle and above but will act like it's lean bogging down low. It's weird cuz it seems to come and go. I tried a new plug already.

Is it possible it's an air leak or a carb issue? I NEVER have tuning issues and this is starting to bother me.

What are some good baseline needle settings for a fully broken in B5?