Doesn't happen in any gears other than first and second. Under hard acceleration, at around 3.5k, my throttle will give out completely. It will not accelerate, but the motor still runs, but it runs a little rough and it sounds like it's misfiring. I wouldn't be able to use the throttle however, it will not go. Maybe a little nudge, but nothing more past the idle speed of that gear. I just put in a -17% pulley, and I'm thinking I could just need a tune.

Edit: I just realized this may not be in the correct forum.