Ready for a Boost Gauge Install?
How to Install a Boost Gauge
This Volvo Forum topic covers installation of a boost gauge. Your model of Volvo might be different from the photos and description, but the concepts are there. Wiring, routing the vacuum line, mounting, it’s all here.
A boost gauge — I recommend the IPD “R” unit, the display is gorgeous — is mandatory for any serious further speed modifications.
I have an IPD A-pillar mount that is going in soon to house the gauge. Then the wiring and tube will be hidden and look professional, no silly double-sided tape to keep the gauge attached to the pilar.
You can go through the firewall like I did, or do it the smart way like D_V_ENT850R and tap into the line that goes to your boost gauge on the dash. You should be able to find it under there somewhere.
For wiring, I wired into the dimmer switch (pink wire on my ’97). Works perfectly, looks fantastic. For wiring done right, see this car wiring topic I started to know how to do it right next time.
Next up for me, manual boost controller
Welcome to Matthews Volvo Site! Your one stop shop for all Volvo news, help and DIY fixes. We feature the Volvo Repair Database, the best Volvo Forum, and an awesome monthly Volvo newsletter. Joining is always free!
The MVS Volvo Newsletter is a once-a-month email delivered to your email. It’s simple to unsubscribe at any time if you change your mind.