what to do with my car ????

One of the most affordable, but considered one of the more reliable kits for the Gen1 tC is the GReddy kit. It provides nominal power increase (100WHP) right out of the box and the easiest of bolt-ons as it requires no piggyback or upgrade of the injectors. I believe with the optional fuel management add-on (piggyback/injectors), the kit will get you to 270WHP. Stay completely away from EBay turbos/kits and anything used. Pay the price now for a new, warrantied, and reliable kit or pay the price later with a bad turbo, leaking piping, or damaged engine. Your choice.

Cars are my passion. When I was young and dumb, I thought it was girls but that quickly faded back 4 tires and a steering wheel. I actually used to know a bit more with car stereos, alarms, and tint but forgot the more technical aspects over time.

Ok, enough about my grey matter. 8 PSI is about as high as you want to go on your average Daily Driven tC. I believe on most kits that puts you over 300WHP. It all depends on the tuning (electronics) and injector sizing. 300WHP is the generally accepted cut-off point to boost a tC with the powertrain remaining close to stock. At 300WHP, you are really pushing the OEM clutch and going to find traction to be your number one issue without an LSD and tire/wheel upgrade, along with, a Stage2 or 3 clutch. The stock motor can handle 400WHP reliably and on a DD basis but that puts you too close to engine damage if anything goes wrong. 300WHP also puts you at the upper limits of the stock fuel system (minus the injectors) requiring a higher volume pump, return line to the tank and external fuel pressure regulator (there is a tiny one in the fuel pump cage assembly in the tank). 400WHP will need a larger fuel rail and even larger injectors.

So to sum this all up, you need to follow this simple guide.
1. Decide on what you want your car to be capable of. An eloquent gas sipper by week day but bad arse street brawler by weekend.
2. Budget. Determine what power numbers you want and define your driveability needs, ie stop and go traffic, long commutes, screaming hot/blistering temperatures, fuel quality, emissions, and stringent city/county/state ordinances. Now, draw these design needs down past budget. Is your design goal well above your budget? Key factor to keep in mind here that when it comes to making power, you can never skimp on quality. Ideally quality should be your only parameter to set your purchase by, but few of us have huge bankrolls or large corporate sponsors. No matter your budget, never let cost be the deciding factor. If budget is tight, revisit step 1.
3. Research products to support your goals/requirements for the given power. Will other equipment be needed as well?
4. Determine if any modifications will be needed. If so, will it require special tools or skills? How long will the modifications take?
5. Plan the installation and modifications. How long will it take? What tools will be needed? Where will you be able to do the work, especially if it takes longer than one day? Based on the products that you purchased, the recommendation of the manufacturer, and the difficulty of the instructions, will you be doing all the work, seeking help from a Buddy, or paying for professional installation? This may have been planned in Step 2 when making your preliminary budget but a review of the products may deem a need for who is doing the work.

Nothing set in stone here. Just an outline to get you started. It can be as fluid as you need it to be.