In a review I read about the Lightning Stadium Pro which comes with the HB .26 they said it was a bit underpowered, I have no expierence with it though so I couldn't give you a my own opinion of it but I do with the Dynamite Mach .26 which came stock on my LST and powers it pretty good especially for how heavy the truck is I have had no problems tuning it either. Good engine for the price in my opinion.