3b intercooler boost

[christopher locke]

hi gang,
i'm thinking on putting more go-fast bits on my 3b wagon.  I have a question, 
and was unable to locate some information on the archives that addresses my 
question, but maybe my searching was faulty...

What is the maximum boost the stock intercooler can withstand?  Bar, psi, 
absolute, gauge, units don't matter, as long as they're given in the answer!

THanks very much guys!

chris

91 2c20vtqw
91 2c20vtq