Originally Posted by ZLover4Life

Any turbo upgrade (any turbo larger than stock) is going to require an unpgraded ECU (even the smallest aftermarket turbos - JWT Sport 500s - have a wastegate preset of 12psi, which is more than your stock fuel maps can handle), larger injectors (even at 12psi, a Sport 500 will flow more cfm than your injectors can reliably compensate for), and at LEAST basic upgrades (intake and exhaust), else you risk reliability issues from choking the turbos (which will land you right back where you are now) or overboosting the engine (which will land you at a machine shop having the motor rebuilt).

Originally Posted by ZLover4Life

Sport 500s are fantastic stock replacement turbos. Of all aftermarket turbos, they spool the fastest, and you can do well over 400rwhp with them.

Originally Posted by ZLover4Life

Maybe Sport 500's if you already have an intake, exhaust, and ECU (you cannot run Sport 500's, or any other turbo, on a stock ECU). Otherwise, absolutely not. EVERY other turbo will require downpipes, injectors, and additional work.

Originally Posted by ZLover4Life

Sport 500s are a fantastic inexpensive upgrade. Spool like stock and have great power output for the cost. Keep in mind, though, any aftermarket turbo is going to require basic upgrades to work efficiently (intake, cat-back, downpipes, and ECU at least, intercoolers and injectors if you know what's good for you).