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Old 06-12-2006, 02:54 PM   #1
Scooby Newbie
Member#: 11720
Join Date: Oct 2001
Chapter/Region: TXIC
Location: Houston, TX
Default Boost issues or Gauge Issues?

I just installed a Defi Link electrical boost gauge in my 06 FXT. If the boost levels are the same in the 06 as they were in 04-05 then i'm seeing high boost. On wide open in 3rd or 4th the needle will sweep past 13 psi and fall back (very quickly) between 12 and 13 psi and then quiver at about 12.5. Could this be an issue with my install, my gauge, or my car? I tapped off of the BPV for the pressure sensor. The car has not been modified (except a prodrive muffler that i put on yesterday). I posted this on sf.org but i figured that i would get a faster respsonse here. Thanks for any help you can offer.

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Old 06-12-2006, 05:18 PM   #2
Scooby Newbie
Member#: 109975
Join Date: Mar 2006
Chapter/Region: Tri-State
Location: Jersey

To get rid of the quiver you need to install a restrictor in the line between your gauge and where you tapped into the BPV line. As far as the needle sweeping past 13 and dropping, that's your turbo spiking a little bit before the wastegate can catch up.
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