Purpose: In order to safely measure the boost levels in our project car, it's necessary to install an aftermarket boost gauge. The factory boost gauge in the Mitsubishi Eclipse (as well as the Eagle Talon and Plymouth Laser) is known to be very inaccurate. Severe engine damage is often the result of increased boost without an accurate boost reading. The aftermarket boost gauge installation is the first step in allowing us to monitor and adjust boost levels with our mechanical boost controller.
Disclaimer: Perform this installation at your own risk. We do not assume any responsibility whatsoever for any damages of any kind resulting from any information printed in this article. This article was created as a supplementary resource and should not be used as the lone source of information on this topic. We recommend that you seek the advice of a trained professional. This is simply a guide to show users how we accomplished our own installations for our Project Car.
A few tips for installation: 1. Make sure the vehicle has had sufficient time to cool down. 2. Gather all tools needed beforehand. 3. Buy a couple of extra hose clamps and barbed fittings in case you break or lose the originals. 4. Get someone to assist you. The job's much easier with two people.
Step 1: Locate the best spot to run the hose (supplied with the gauge) through the firewall. We chose to run it through the same hole as the throttle cable. We used a wire coat hanger as a guide to get the hose through the small opening. Make sure that the hose won't be pinched in any way, as this may result in an inaccurate reading.