I don't know guys, I have a Prosport stepper boost gauge in my Stealth....I got it from my son when I bought him a SBC-iD (built in boost gauge).
Didn't have a clue whether it was accurate or not UNTIL I bought an SBC-iD for the Stealth.
Turns out that they are < 2 PSI apart at ALL times and sometimes dead on....
FWIW, I located my sender as far away from all heat sources that I could (and still keep it under the hood)....and my connections to the boost/vacuum source are SOLID....
Bob.
As of 5/1/11 my Prosport gauge has taken a dump. Worked fine one morning, came out to the car after lunch turned the key and the gauge turned red, screaming, needle pegged full up.....





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