hey,
My friend told me that by adding a turbo kit to a car it lowers the cars life. Is it true?

 

I think you meant "engine's life". Yes, I think it would, unless you change some internals on your engine, or keep the PSI low (below 6). Also, I think just the fact that you'll have a turbo will make you wanna "gun it" more often, which will lower your engine life.

 

Sorry but I am new to this kind of stuff I am just learing but whats PSI?

 

PSI is your boost level in Pounds per Square Inch.

 

anything that makes your car work harder, faster, or increces its output will wear out the engine and possibly the transmission