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26 psi boost



Fellow Audi fanatics,
    I own a 1987 5kCDQ and have a QLCC chip in it, a pressure regulator
controlling the wastegate, and 3" exhaust from downpipe back.  I have
recently installed a boost pressure gauge and have found that I'm getting
about 14 psi boost pressure.
    As I have been following the list, I noticed that there are a few
members who are running 18-26 psi.  I would be very interested to find out
how they are running such high pressures without getting fuel pump shut-off
(I hate FPSO).  Have they bypassed the fuel pump relay?  Are they using a
different chip?  Special Wastegate controllers?
    Don't get me wrong, 14 psi is nice but I need more.  How does running
such extreme boost pressures effect our MC engines?  My car is a daily
driver as I'm pretty sure these super-boosted cars are so I assume that
these engines can handle the extreme pressures forced upon them.  How much
HP would 26 psi give to the MC engine, what cost is involved?

Audiman1@msn.com
1987 5000 CD quattro (14psi boost not enough, I need more!)
1998 Toyota Corolla VE (to replace the totalled 1997 Corolla SD)