heh, finished breaking in my 15ss, got about 7 tanks of gas thru it. Haven't leaned out the low mixture screw yet, so it chokes from idle still, but... Today my buddy comes over with his 2.5...and mind you I have these jumbo maxx tires on my truck with stock gearing, and his has stock tires...BUT....
He jumped all over me on the start, and as soon as second hit we were stuck in our positions....a change of gearing and leaning out my low mixture, I think I'll take him, or at least stay neck and neck, he thinks I will too, with the jumbomaxx tires even!!...this nitrostar.15ss motor kicks butt....nice job HPI! he's talking bout the sirius motor now.