Defi Boost Gauge Accuracy
Jan 30, 2005, 09:10 PM
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Originally Posted by jj_008
My D-series reads about 1.5 psi high. It is my poser gauge. The $6.00 chinese, Grainger gauge I have reads 0.25 psi high.
Jan 30, 2005, 09:31 PM
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I used a highly accurate (0.5 psi) pressure tester from my work and ran it against my Defi boost guage. Once I saw the difference I bought the Grainger gauge and it was only 0.25 psi off. All were run up to 22 psi.
I am not saying that all Defi gauges are off, I only have one data point in my sample.
I am not saying that all Defi gauges are off, I only have one data point in my sample.
Jan 30, 2005, 09:34 PM
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Originally Posted by jj_008
I used a highly accurate (0.5 psi) pressure tester from my work and ran it against my Defi boost guage. Once I saw the difference I bought the Grainger gauge and it was only 0.25 psi off. All were run up to 22 psi.
I am not saying that all Defi gauges are off, I only have one data point in my sample.
I am not saying that all Defi gauges are off, I only have one data point in my sample.
Jan 31, 2005, 06:11 AM
#7
there was a similiar thread a while back. When I had my car dynoed my d-gauge read about 1.5 to 2.0psi higher than the boost gauge the shop gauge read on their dyno. Plus, the shop owner had seen this before with other defi d-gauges...which is unacceptable if you ask me.
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Jan 31, 2005, 06:14 AM
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Originally Posted by manOfaith
there was a similiar thread a while back. When I had my car dynoed my d-gauge read about 1.5 to 2.0psi higher than the boost gauge the shop gauge read on their dyno. Plus, the shop owner had seen this before with other defi d-gauges...which is unacceptable if you ask me.
Jan 31, 2005, 06:33 AM
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Originally Posted by ERGO EVO
If this is true...no kidding. WTF? All the literature expressly proclaims the high degree of accuracy.
It's a good rule of thumb to never believe a company's own advertising or promotion. It's always going to be a puffed up version of the truth and it will never relay the negatives either. That's why word of mouth is so important. It's called third party perspective and it says a lot more than a company's brochures. That's why I recommend Autometer gauges (tried and true) and GSC motorsports, and TurboTrix Tuning, and Hotchkis springs, etc etc etc.
Jan 31, 2005, 07:16 AM
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Originally Posted by jj_008
I used a highly accurate (0.5 psi) pressure tester from my work and ran it against my Defi boost guage. Once I saw the difference I bought the Grainger gauge and it was only 0.25 psi off. All were run up to 22 psi.
I am not saying that all Defi gauges are off, I only have one data point in my sample.
I am not saying that all Defi gauges are off, I only have one data point in my sample.
Jan 31, 2005, 10:25 AM
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Originally Posted by manOfaith
there was a similiar thread a while back. When I had my car dynoed my d-gauge read about 1.5 to 2.0psi higher than the boost gauge the shop gauge read on their dyno. Plus, the shop owner had seen this before with other defi d-gauges...which is unacceptable if you ask me.