TeeWX

Sometimes you can pick them up off guys who have blown turbos sitting in their garage etc. I'm not sure if mitsubishi would sell you the part or not. I think most of the actuators are the same for mitsubishi turbo's (don't quote me on that though) but I am pretty sure as long as the housing is the same it should be the same (like 14b 16g etc). First thing first though I would make sure that is your problem before looking for a replacement.

The first thing I would do is run a basic boost leak test. Build your own tester out of rubber IC pipe and a pvc end cap, drill and install a valve stem in the end cap and bolt this up to your turbo. A "how to" for this can be found here. Basically you will be pumping air through your entire intake and listening for leaks, fixing them as you go. I would do this at least once a month as basic maintenance procedure. The second thing I would look into is your wastegate. It sounds to me like you either have a really bad pre turbo exhaust leak (which you would hear from driving so I am ASSUMING this is not the case), OR your wastegate is stuck open. Check your actuator arm and see if you can move it back towards the actuator. If it is getting stuck open then your exhaust gases are passing directly into your exhaust and skipping the turbo entirely. (Path of least resistance) If this is bad then you will probably need to replace the actuator. Also, this may sound funny.. but when you have the intake off to put on the intake tester, make sure your turbo still has clean/sharp looking blades on it.. If not, this is very bad

So fuel is limiting.. What tuning options do you have with the G54B? You are talking 400whp or 400bhp? Thanks

Research on youtube? Is that a serious statement... lol. I mean youtube is cool and all if you want to be entertained but I don't see how youtube will tell me the limits of the factory mill.

Not sure if this goes here. I am new and interested in getting a conquest/starion for a project. I currently have a '90 Eagle Talon TSi AWD I have been playing with and i've owned a few in the past as well. I am now looking for a RWD project car. My first question was how good is the factory G54B (i think) engine at making power? Can you do 400whp pretty easily? OR is it a much better idea to swap in a 4g63t if you want that kind of power? Thanks, let me know what you guys think.