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overpressure switch
Posted by Dave Juter [Email] (more from Dave Juter) on Sun, 25 Mar 2001 18:58:30
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I just had some general questions about the turbo/Bosch ECU system in my 89 Turbo.
I was looking in the owner's manual and it mentioned a replacement of the turbo overpressure switch every 30k. I know the pressure switch at the old knee bolster position was replaced in the 89+ models... and while I'm currently suffering from an overboost cutoff problem (tweaked APC, 3.0 fpr)...
1) is there a overpressure "unit" separate from the ecu's board?
2) is it bypassable?
3) do these newer models rely on AF ratio to determine overboost?
I want to be able to get 18-20 psi boost... would a new APC and dynamic FPR cure this?
thanks in advance,
dave
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