Join Date: Nov 2007
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Here is some of the information from that e-mail from cometic.
"Our testing included various trucks ranging from daily driven commuters up to full race prep applications. Street driven trucks have seen 80 psi of boost with 12mm studs and have shown no problems with everyday driving. We suspect the gasket to hold more than 80 psi, but no one wanted to push their test vehicles to destruction. We also will be offering an MLS gasket with integrated gas filled ring that should entirely eliminate the need for power ringing or o-ringing the block and head.
Unfortunately we do not have any testing back on the gas filled design
(Phuzion Gasket). Our standard MLS gasket for the Cummins that held 80
psi comfortably will sell at a retail price of $249.95 plus shipping. Standard thickness on this gasket is .060" but can be ordered in custom thicknesses."