G-Valve questions...

[Shel-Game]

To those guys running g-valves: When you run a g-valve, do you get max boost even at lower RPM? For example, if your g-valve is set to 12psi, and you floor it, you get 12psi even at, say, 2K rpm? The reason I ask is that I know the computer (stock) limits the boost at lower rpm to say 7-8 psi, then allows full boost above about 3K. If the g-valve allows full boost at all RPM, what does that do to the durability/longevity of the engine? Just curious before I turn up the wick...

-Rob

Mine is set to 12 psi, and it pops up there way quicker than when the computer was controlling it.

I don't know the exact RPMs, it still takes a little bit for it to spool up, but that boost needle shoots to twelve pretty fast.

Can't speak about longevity, but you'll like the acceleration!

- John

[89daytonaTII]

Yes it does hit full boost sooner, but not at 2k rpm. The actual valve itself doesn't do anything for durability/longevity. How much you decide to turn it however may have an effect w/o the proper fuel to go with it.

[Shel-Game]

The reason I was asking is that I modified my own cal and, well, it scared me a little. Stock, the boost vs. rpm table gives 6 psi up to about 2500 rpm, then ramps up to 11 psi by 3500rpm and stays there until about 6K. I changed it to be 9 psi from idle to about 2500, then ramp up to 14psi by 3500.

Then I took it for a test drive; even with a little throttle, the boost needle shoots up to 9psi and the car really pulls hard (I actually blew the bypass hose off, need to get a clamp on that thing)! Anyway, I was a little concerned that maybe I'd gone too far. Sounds like I may be able to do more...

-Rob

[CSX321]

I think the only reason for ramping it up was to reduce the stress on the transmission. It's lots more fun with a G-valve.