your driving an untuned car. STAY OUT OF BOOST or it's gonna blow up.

Find some DSM 450's like it's your job! If you feel like makin the trip down i can probably help you out. Lemme know what u wanna do, but honestly.. it will kill the motor if u don't stay outa boost until it's tuned properly. Trust me, i blew my frist 3 until i learned! Ever since then i've had a very happy motor & been taking care of about 6 other's around here!

*edit: If you want some room to grow. get some RC 750's instead.