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There is a line between the output(big line) and the wastegate on your truck. This is the sense line for your turbo.
As things get older the boost drops. You can cut that line and tee in a small gauge. afterwards cap the tee and leave it in place. or add a pernament gauge going into a different spot on the main output from the turbo to the intake of the engine.
I cheap gauge at napa and some line fittings might only cost 20 bucks.
to test you basically have someone rev it smoothly while you watch the gauge. Best if you do a pernament gauge mount and drive. Then you know the boost underload rather than static.
If your boost is low, you might have to get a boost controller or a ball valve(grainger valve) to put in the sense line to delay the signal to the wastegate.
I bet you have electronic stuff on those lines too though. SO you have to be upstream of all that junk. You probably have an electronic controlled max setting.
Yah go to the surf forum for more info. I am fishing here.
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-84 BJ60, Finally on the FN road!
-91 FJ80, wife's ride
Iron Butt award winner of the Cruise Moab 08 !
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denis
brownbear
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