I haven't done it myself, but I did find a place that shows you how to do it for free instead of paying what some places charge. Looks pretty simple and stuff you can buy from local parts store, here's the link from RPMoutlet.comhttp://http://www.rpmoutlet.com/boost%20bypass.htm
The way it was described to me from the guys @ RPM outlet is that with their way of doing it the truck is always in the boost and therefore the psi ramps up more quicly than if things were set up in a stock fashion. The quicker the boost can ramp up then the quicker the power will build. They claim they have dyno data to support this.
I just finished mine over the weekend and going by the stock boost gauge it pegs out on 10. I used to be around 8-8.5 so does look like it's picked up a bit, also can tell when you get in the throttle too. Gonna find out if it definitely works on Sunday at the track.
I went from 14lbs to almost 16, but I really cant tell if it made a difference I don't abuse my truck and it hasn't been to the track since I done this.
just unplug the sensor...
i've did the vac line switch etc... and i gotta say every month i have to check where i did the t fitting at with the 90* elbow... it dry rots out. ive had to replace it a few times now... but yeah you can just unplug the sensor and it does the same thing.