[s-cars] Whacky Boost

[Chad Hall]

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I am on the list to purchase the MTM stage 1 but currently I'm having probl=
ems with boost that need figured out before the change.  I previously had a=
 TAP stage 2 with W/G spring that showed 20 psi.  Car felt strong, I instal=
led a new exhaust (twin 2.5" pipes straight to a Flowmaster) and, coinciden=
tly I think, I began having boost problems.  I had previously changed to a =
Samco hose down low, new plugs and plug boots, new PSO, changed O2 sensor. =
 I even changed back to the OEM computer and spring--this showed max boost =
at 17 psi.  The problem is: under full throttle, say in 2nd gear, it will p=
ull great then fall back to 9 psi, then back 17 psi, then back to 9, all wh=
ile accelerating through 2nd gear.  The same thing happens in other gears. =
 I have a check engine code that pops up (dealer showed that it was a cam p=
osition sensor code) and I have a new one to install but wanted some other =
opinions before I tore into the pulleys.  Am I on the right track?

Chad Hall
'95 S6
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