Well, I finally finished the install this weekend. I put an amp meter on the wires I was using after noticing that the test light wasn't lighting up very well, and noticed that I wasn't getting enough power on the wires I was using. Right now, I have the gauge lighting up white at all times, because amber is too dark to see during the day, but the drawback is that white is annoyingly bright at night. I can't even see out of the side view mirror because of the reflection from the gauge. once I get some time, I'll figure out a fix for this, but it's good enough for now. The peak hold is a really nice feature on this gauge. makes it really easy to see how high you're boosting through the gears. here's what I've noticed so far:
1. I'm not spiking at all. it hits max boost for the gear and just sits there. I'm pretty happy about that.
2. I think I might be a tad higher than I'm supposed to be in all gears. the first time I checked, I was 12psi in first, 15 in 2nd and 3rd, and 17 in all others. I'm not complaining, but I'm going to do a few more pulls to verify.
3. The vent mount might be the most annoying location for this. I'm going to probably rig a switch so I can check how bright it is when it's amber, but the glare is a pain.
I'll post up some pictures when I get a chance.