1 psi roughly equal to 8-15 HP, depending on application. It says.. "up to 1 psi"... so... you might get 5 HP out of it... that's not unreasonable.

Not worth the time, money, or risk of some tiny piece of cheap plastic breaking off and making its way into the intake.

I also agree with dakar... its likely that it'll make more of a drain on the engine than it helps.


obvious ebay scam... it sounds legitimate, but its not.