Originally Posted by sexyyrex
...No one should be loading a larger turbo car, on pump gas, in 5th gear, not at speed, its a recipe for disaster. My guess if your car is reading full boost, not at speed, that your boost gauge is broken. Verify with a datalog...but if you'd been loading the car, again, not at speed, chances are you'll need more then just a new boost gauge.
Why does that scenario worry you so much?
My setup hits 20psi at about 3300 in 5th gear, at about 65mph. It's not a disaster, it's just a waste of time. 5th gear sucks for acceleration, and it takes a few seconds to build 20psi at such low RPM.
In 6th, if I floor it at 2500 RPM, it takes almost 10 seconds to reach 20psi, 3000 RPM, and 80mph (they all happen at once). I've only done that once (in the name of science
) but it was almost two years ago and the motor still works just fine.
It's certainly a lot more satisfying to shift down, but high boost in high gears really shouldn't blow up your car.