Well you wouldn't strap it to the front of your radiator, that would impede air flow to the cooling system.
The ideal place would be somewhere next to the radiator or somewhere else at the front of the car. Many people fit them under the front bumper or just in behind the grille somewhere.
It looks just like a little radiator.
One end comes from the turbo. This will be the large hose that presumably currently runs from the turbo to the inlet manifold on your car.
That hose would go into one end of the intercooler, then at the other end another hose goes out and back onto the inlet manifold, capiche?
You are effectivly T'ing into the existing intake system.
Its purpose is to cool the incoming charge of hot air from the turbo to the engine and make it denser, therefore cramming more air into the combustion process and making more power.
If you intend to fit an intercooler, the priciest and trickiest bit will be getting the hoses routed properly. You really need to use silicon hoses for this and they can be pretty dear.
The intercooler itself can be picked up for peanuts.
Although a fiddly job, it would be the best bang for buck mod to make. A conservative estimate would be around 20hp extra.
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