Mitsubishi TDO4HL 15T 6cm^2 Turbo Install
This was the first performance modification I did. In conjunction with the new turbo I installed a Forge Blow-Off Valve, Custom intake Pre-Turbo piping, and Ported my exhaust manifold. These were all necessary to install the larger turbo and I was VERY pleased with the results.
Here is the turbo out of the box.
The intake i made by buying 2.5" mandrel bent intake piping and high tmeperature silicone. I had to cut the silicone on the turbo side because it didn't allow enough room.
This turbo had different fittings for the oil and water lines than the stock ones, so i needed to get SS braided line and the proper fittings and hose ends. A tip: if you are doing this yourself, installing the hose ends onto the SS braided line will result in aggrivation and lots of cuts. You'll need a vice, a screw driver or something similiar, electrical tape, and good gloves, along with a rotary tool. I used a Dremel. Make sure to run pressurized water and/or another cleaning agent through the hoses after the ends are completely attached, but only do this depending on the line. you do NOT want water or soap residue in your oil line no matter how little.
Russell SS braided Line Russell Hose ends Fittings
Its important to get angled fittings for the turbo sides of the 3 lines so the lines dont brush up against the exhaust manifold, but this will vary on car make etc.
The fourth line is the Oil out line. This line is not under pressure and is therefore a gravity feed line. If this line is not at a downward angle to the oil pan then your oil will not flow out of the turbo into the oil pan! I needed to make a drain line based on the spigot (which required modification) found on this turbo and some flexible hose with a high enough heat capacity. Just be creative and make sure that gravity will carry the oil to the oil pan and you'll be fine.
Other than this, i needed to port my manifold in order to make the exhaust manifold exit flange agree with the turbo's inlet.
I needed to get a Blow-Off Valve since my custom intake didn't have a port for the recirculating system and i didn't feel like making one. PLus i love the sound of a BOV.
My car also operates on a crankcase breather unit which was removed along with my stock intake. So to counter this i purchased a small filter and adapted it to the crankcase vent.
To go along with the tubo i have an MBC (Manual Boost Controller). This allows me to prolong the time before my wastegate opens, allowing my turbo to compress more air longer. My stock set-up was around 9 p.s.i. With the MBC i can raise it to 15.5 p.s.i. which is where my ECU will cut fuel.