I run up to 45 lbs of boost - but my engine alone weighs more than that little ricer.
My tip would be to get yourself onto a supra forum, sit back and read for a while. Figure out what guys are doing that works, and what doesnt.
Or you could just post..."what batteries do I need to make my Traxxas Supra faster..."
Losi 8T 1.0, Savage Flux - XL style, LST XXL, Muggy, 3.3 E-Revo Conversion and sitting outside 425hp, 831 Tq Dodge Ram Turbo Diesel. It SMOKES