I cant really deciede which way to go here. Money isn't the issue here I need to know the best way to go. I do understand both systems but I also know the pro's and con's of both. The G-valve gives me more boost all the time no matter when. But at the same time the well being of the motor is not monitered, i.e. knock. On the other hand even though xtra boost is not always available on the turbo+ system, it does monitor knock and will shut down xtra boost if it detects knock. I love that. So my question is could there be catostrapic engine damage with the G-valve as opposed to the Turbo+?? Thanks in advance fellow bricksters!!