A car itself jump doesn't jump bad. As long as your car is setup properly(nothin weird) it's all about driving. Now it can be an esc setting problem if your brakes or drag brakes are set too high.

Your a noob so I'll give ya some advice from a 20 year vet. Driving is 90% of rc. Practice driving... Put the kit setup in your car down to a" T" don't skip anything. Make sure your Esc settings are correct, smooth brakes and throttle and. Just practice driving!!! 4whl is very sensitive to throttle/brake inputs! Throttle brings the nose up/ brakes bring the nose down. Typically letting off the gas too soon on a jump causes the nose to dive in the air.