If you back off the throttle completely before you take off the car will want to pitch forward. If you keep it on too much it will pitch bardwards, sometimes too aggressively to control. I suggest you just practice getting it right, it's easier at track level to learn i find.
When you get good you can have Truman lying on top of the jump and Pidge waiting 10 yards away to catch it while you attempt to do a double backflip!
