I received an email from TST today. This answers several questions. My email to them and their reponse as follows:
From: Jim Nance
To: -- email address removed --
Sent: Wednesday, December 24, 2003 7:21 PM
Subject: Power Max CR for '03 Dodge CTD
I'm considering ordering this unit with the digital display of temps. Two
questions please:
1. Is this a "plug and play" box like the Edge and others? Or, is the
connection of the box more invasive and obvious?
2. Does the adjustable with guages come with wiring harness and sending
units for temps or are these extra? If so, how much more for the EGT and
boost sending units and wiring?
Their reply:
Our PowerMaxCR is all plug in with the following exceptions:
The ground wire is hooked directly to the ground bolt on the battery cable.
The 12 volt supply is obtained catch using a fuse tap under fuse 28 in the fuse and relay center.
The exhaust temperature probe requires drilling and tapping of the exhaust manifold.
All items are included.
So I gather that external sensors are required. Still, it sounds like a fairly easy install and is not very invasive.