so today i was driving my car and i was in 3rd gear and i maxed it out and the middle of the gear it jerked back really hard and went back to normal... i did it a couple of times to show my friends what they thought was wrong with it and the last time it jerked i threw a code... so i took it to advanced auto parts and it said i was running engine over boost!! i have a boost controller and it was set to 1.5 bar and it has been that way for like 2 months and i havent messed with it.. but im getting my car tuned in a week so that i wont have the problem again

 

ok so problem solved
its called fuel cut its from running lean its to save the engine but in order for fuel cut to happen it needs to run lean for a second which is no good
do not boost anymore untill you get tuned

 

That's weird. Do you have a wideband, if so what were you a/f's?