I had my bighead installed during a tranny swap. I just put gauges on last week and I see I'm only hitting 25lbs peak boost. I'd like to take that up so that when it peaks, its hitting 30psi (or close to it). The problem is, I cant come up with my installation manual for the bighead and I was wondering if someone could tell me the proper way to adjust it for a little more boost? Like I said, I'm ony looking to get 5 psi or so.
Thanks in advance,
Jason

If you are using the Juice Attitude for your boost gauge, it won't read much past 25 psi. I think JK says it will go to 25.6. You'll need a direct reading boost gauge to read numbers above 25 psi. Also, won't 30 PSI put the turbo into overspeed?

IIRC you remove the heat shield, then remove the nut that holds the actuator arm to the waste gate. Make one full turn on the actuator arm turn then using compressed air on the banks big head to open the actuator back up to ease putting the nut back on the arm. reinstall the heat shield and test drive. The compressed air on the the banks will hold the actuator arm in a fixed position. You didn't mention your new gauges in your signature AFP1 is correct on the limits of the edge monitor.

Sorry about not updating the sig. It seems to change week to week! So far my juice and the manual gauge are both topping out right at 25 something.
I have read/heard that 30psi isnt too bad but you dont want to go over that. I dont race or pull much, just want it there if I need it, being I have the part to do it.
Thank you wild turkey. Where do you appy the compressed air? right onto the air hose inlet on the actuator?

yes...and i think i have mine set to 32 i copied this from some instructions i had but can't figure out where i got them.

The Banks instructions indicate that once the rod length has been adjusted so the rod pin can be inserted into the wastegate arm with the wastegate closed, disconnect the rod, then turn the rod 5 full turns - making the rod shorter. This is the preload set point. Getting the shorter rod length reconnected to the wastegate arm on the turbo requires that you use air pressure, applied to the Banks Big Head, to extend the actuator rod. I used about 40-psi. This portion of the installation is made easier if the head is loose on the bracket.
In an earlier Big Head installation I participated in, the 5 turns allowed the turbocharger to produce about 22-psi boost pressure. This is just slightly above or equal to stock boost pressure. I used 6 turns for this installation, which produced about 26-psi. I may need another turn to reach my goal of 30-psi for our Duramax Hot-Rod Project. You may need to vary the wastegate rod length adjustment to produce the boost pressure you're looking for. Stock boost pressures for the LB7 Duramax 6600 can vary between 18 and 22-psi.
Some have recommended boost pressures approaching 35-psi. However, this is getting uncomfortably close to the spooky 39-psi level, where reports have indicated serious turbo overspeed occurs, resulting in disintegration of either the compressor or turbine wheel. You don't want to go there...

Ok here is where i found it. or rather where someone here told me i could find it. ):h http://www.the**********.com/reviews/bighead.htm oh the ********** forum and then do a search on Banks.