[200q20v] FW: TBV replacement

Beer, Jerald jbeer at boosecasey.com
Mon Apr 30 13:36:09 EDT 2001

 With all the recent talk about TBV's I replaced my TBV last  weekend (from
p/n ending 106-yes 106 not 108, to 102) and made an interesting discovery.
Boost is down to about 16psi (from 22), but vacuum has gone from 12-13 in
Hg. at idle to 15. Gas mileage appears way up also, at least according to in
car gauge (which has been fairly accurate). I am at 25.8, which is 80%
highway and gentle city acceleration. I usually get about 19-19.5 on mixed
60/40 driving, so it will be interesting to see what this tank does. Just
before fillup I had adjusted the boost by putting T-P spring  in which got
me back to 20 psi but haven't run any boost on this tank with T-P spring and
shims. Will report gas mileage/boost after a tank of fuel.
91 200q

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