My first jet and it might be decent?..... Basically it has low fuel but a good amount of power... Func 2 is to detatch wing fuel tanks and Func 1 is to enable advanced pitch to turn on a dime while making it unstable at the same time so do not try to roll and pitch back at the same time or it will sometimes go into a recoverable spin. Detactch fuel tanks before you activate advanced pitch.... This jet has low fuel but has an insane p-t-w ratio and is fine tuned to make insane turns with func 1 on. When adding any item it may affect the advanced pitch performance of the jet with tanks detatched. Vtol to rotate the tanks down. Drop the tanks off for the huge performance boost. I did not mod anything. (sorry, I did not focus on details so much as the pure performance this thing outputs)