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9dreizig 9dreizig is offline
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Join Date: Jul 2005
Location: Reno NV, Bay Area during most weeks,, Kids still in NH
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Overboost issues

Beautiful day here so took the tracdog out for a ride. Since I've not really had a chance to fine tune the DWUR I had my computer hooked up.

Well I hit it hard and watched as the boost guage climbed past 1 bar and pegged.. I naturally lifted immediately. In looking at the graph on the DWUR it looks like it it 1.5 bar. I repeated this to make a few more observations.
Also it appears that my guage is screwing up but that's another issue...

So here are my questions..

What's the fail mode of the wastegate ? is it typical for them to stick ??

Where does the overboost switch kick in ? I'm pretty sure it did on the second or third try on my part to see what was going on.

How is the stock boost guage tied into the overboost relay ?? I can see from the wiring diagram that it is but I'm not sure how..

98 Tahoe ,2007 Saturn Vue
86 930 black and stock, 80 930 blue tracdog
91 Spec Miata (yeah I race a chick car)
"life"ll kill ya" Warren Zevon
Old 03-26-2010, 05:45 PM
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