How to build a cheap and custom turbo kit

1. The wastegate connects to the turbo manifold and can be an external or internal module. Basically, the exhaust gases from the turbo manifold blow into the turbo and continue to blow. The turbo continues to spin and keeps on spinning and spinning resulting in tons of extra boost for the engine. The thing is, however, you don't want too much boost to enter the engine or it will blow up. Basically, having too much boost results in too much power, which than results in too much power for the pistons and finally a blown engine. So, the purpose of the wastegate is to make sure the turbo does not spin past a certain point. The wastegate monitors how much boost you have in your engine. Essentially, if you set your boost to 8psi (pounds per square inch), when the wastegate sees 8psi, it will open and send the exhaust gases AWAY from the turbo so that the turbo stops adding boost.

2. The turbo manifold is one of the most important parts of the whole system. It collects the exhaust gases from all of the exhaust ports and reroutes the gases into ONE big port. Basically, this just adds efficiancy to the air flow process and results in much more power.

3. The turbo is the MOST important part of the whole system. Basically, the turbo acts as an air pump and takes the gases from the exhaust ports and shoots them into the exhaust turbine, which spins the compressor turbine. One major thing to remember about a turbo is that it needs oil to stay lubricated or itll burn out and ruin your engine.

4. Now that you have the exhaust gases blowing through the exhaust turbine on the turbo, it needs a place to go. The downpipe connects to the turbine side of the turbo and goes straight to the cat converter (under the car). The bigger the downpipe, the faster the turbo will spool and the more power you will get.

5. The purpose of the capture pipe is to capture the air from the turbo and to send it to the intake manifold so that the motor can use it.

6. Pipe 6 is a "U" bend pipe that makes a "U" shape and connects to the intercooler.

7. The intercooler is another one of those parts that are ESSENTIAL to the turbo system. Basically, the turbo is blowing out extrememly HOT air. That hot air is not very good for the engine, so this is where the intercooler comes in. The intercooler acts as a radiator type device and cools the air from the turbine down by A LOT. Now, the air going to the engine will be safe.

8. After the air leaves the intercooler, it enters pipe 8 and goes through that pipe where it makes, yet another, "U" bend. The air than goes into pipe 9.

9. The air from pipe 8 enters this pipe, travels through and than goes into the intake manifold so that the engine can use it.

10. The blow-off valve is my the "coolest" part of the turbo. This is the part that gives you that "PsssssssssssHHHHHHTTTT" noise when you shift. But, this part is not just for a cool sound. The purpose of the blow-off valve is to release the air out of the turbo when it hits is max boost point. This part works hand-in-hand with the wastegate in keeping the turbo and the engine ALIVE. Without a blow-off valve, there is a VERY high risk of constant air hitting the turbine and very bad results.

11. Finally, the fuel management unit. Basically, this parts adds more fuel into the engine cylinders when your car adds boost. If you force more air into the cylinders, you definitely need a FMU. The FMU increases fuel pressure so that the engine can keep up with the added stress that boost applies to it. This of the FMU as a needle injecting steroids.

Basically, all a turbo consists of are a few parts and a bunch of pipes. It's a lot easier to understand when things are explained this way.