I've had Autometer for a number of years, (Sport Comp and Pro Comp)and I'm not overly impressed with them. The only reason I still use them is because I have them. I am looking for other options currently.
Just for reference, I have found out that my Water temp gauge reads 10 degrees high, my boost gauge reads about 2 PSIG low, my oil pressure seems to be pretty accurate though. Tachs have been somewhat accurate.
Personally I want to get away from the "one hole (gauge), one reading" layout. I'm looking for some 2 in 1 gauges that will fit the bill.
What are you using as a reference to these?
1971 Camaro 427 in waiting
1988 C1500 Daily Driver
1955 Bel Air, blown BBC street car