PLX DM-100 and Boost Module

trick000 · 08-15-2007, 08:54 PM

I just finished installing the DM-100 digital display and the boost module on my 07 STI. I used the vaccuum hose that went into the factory installed mechanical boost gauge. Everything seems to work fine except for the fact that the DM-100 is displaying 22-23 (I'm guessing PSI) at IDLE which decreases all the way to zero as boost builds up. I'm guessing the boost module needs to be calibrated or the vaccuum hose is not installed correctly for this setup. The thing is though their is nothing on the boost module to calibrate. Anyone have any thoughts? Thanks.

trick000 · 08-16-2007, 03:17 PM

Ok guys. I figured out that I was reading VAC on the display instead of boost. However I still coudn't get any boost readings when I switched it to Boost.

For those who replaced their factory mechanical boost gauge with an aftermarket one, did you use the same vac hose that was used by the original one?

12SECSORLESS · 08-16-2007, 03:56 PM

Mine didn't come with a factory boost guage, i had to install one and i tied it into the vacuum line off of the blow off valve. Which that should be the way a factory boost guage gets installed by subaru anyway. Trace the vacuum lines and make sure they are all hooked up right and to a vacuum line that supports boost as well like the blow off valve.

08-15-2007, 08:54 PM	#1
trick000 Junior STI Driver Car: 07 SWP Location: Houston Posts: 60 Join Date: Apr 2007 Trader Rating: (0)	PLX DM-100 and Boost Module I just finished installing the DM-100 digital display and the boost module on my 07 STI. I used the vaccuum hose that went into the factory installed mechanical boost gauge. Everything seems to work fine except for the fact that the DM-100 is displaying 22-23 (I'm guessing PSI) at IDLE which decreases all the way to zero as boost builds up. I'm guessing the boost module needs to be calibrated or the vaccuum hose is not installed correctly for this setup. The thing is though their is nothing on the boost module to calibrate. Anyone have any thoughts? Thanks. This ad is not endorsed by this member. Please register or login to hide this ad.

08-16-2007, 03:17 PM	#2
trick000 Junior STI Driver Car: 07 SWP Location: Houston Posts: 60 Join Date: Apr 2007 Trader Rating: (0)	Re: PLX DM-100 and Boost Module Ok guys. I figured out that I was reading VAC on the display instead of boost. However I still coudn't get any boost readings when I switched it to Boost. For those who replaced their factory mechanical boost gauge with an aftermarket one, did you use the same vac hose that was used by the original one?

08-16-2007, 03:56 PM	#3
12SECSORLESS Amateur STI Driver Car: 07 Subaru WRX STi Fav Mod: ALL MODS Location: RALEIGH, NC Posts: 17 Join Date: Aug 2007 Trader Rating: (0)	Re: PLX DM-100 and Boost Module Mine didn't come with a factory boost guage, i had to install one and i tied it into the vacuum line off of the blow off valve. Which that should be the way a factory boost guage gets installed by subaru anyway. Trace the vacuum lines and make sure they are all hooked up right and to a vacuum line that supports boost as well like the blow off valve. This ad is not endorsed by this member. Please register or login to hide this ad.