Everyone will tell you similar items. That is a given. A few who really want to go fast will tell a beginner to make sure the motor is solid. Compression test, oil change, air filter,tranny service,flush radiator, etc...After you have an idea of what your dealing with, then put your $$$ to use wisely. First thing would be new valve springs and take off the air box and put a K&N right on the end of the MAF. Make sure you do not have any air leaks on your flex hose leading up to the turbo.You dont want un-metered air getting in, throws off your tune. Get a SCANMASTER coming in the mail as we speak.
This is where I would stop with the engine and consider the chassis. You can add all the go-fast goodies you want to the car, but if your chassis cannot handle it, forget it, it is wasted $$$ and only good for conversation. These cars are the most fun in the first 60', so work on the chassis. I would get the body bushings, seat brace ( GNX style), and front connecting braces. You can change shocks if you like, but decide if you want ride comfort, or straight line performance. I would add a nice set of boxed trailing arms, lowers first, uppers if you have the $$$. These items will make most of the "sqeeks" and "rattles" go away. Air bags are good to add also.Now you have a pretty solid chassis that will respond well to your engine upgrades. The ULTIMATE upgrade is the HR parts rear sway bar, but it is big $$$...WELL WORTH IT, but $500.
Now you can get under the hood. Get an adjustable fuel regulator. Zip-tie all the vaccum lines. A fuel pump and Hot wire kit is where I would go next. Now your getting more air in and need to get more out. I went with a 3 inch downpipe next, not necessary, but I needed an exhaust, so I did the entire system. A wastegate actuator, for more boost, or if you get a downpipe, you could go external gate. I love mine. ALKY is the best bang for the buck you can add. It really makes these cars FUN, and is very simple. (Dont ever be afraid of anything for these cars. This forum is full of guys who will walk you step by step thru any mod you wish to make.) A boost gauge and fuel pressure gauge are my choices first. Opinions very. I have these 2 gauges directly in front of me, on top of my dash, in sight at all times. A 160 thermostat, new O2 sensor, plugs, wires are the basic tune-up items. Dont forget ZDDP in your oil. Once you decide what boost levels you want to go for and add ALKY, get a chip from Eric at Turbo Tweek and your ready.
That about does it for your $4000.00 bucks. Its the NEXT $4000 that gets really fun!!!LOL...TURBO, TRANNY, WHEELIE BARS...hahaha
Thanks
Coach