I've had my first scooby for just over 2 months. (2003 STi).

Was wondering when/if i should use the i/c waterspray and how it makes the car run better. I dont tend to lash the car when driving, so would i ever need to use it?

Cheers,

GreigRFC

 

mostly used when giving it some but also when stuck in traffic. you know more when to use it if you fit an oil temp gauge.

 

It does do something, getting it at the right time..... thats the hard bit (hence JDM cars have an auto button that does it for you )
Basically it causes air though the intercooler to become denser, doing so means you get more air into the engine and more power

Tony