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Thread: thoughts on crappy boost gauges

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    Advanced Tech? verified Feedback Score 0 i3igpete's Avatar
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    thoughts on crappy boost gauges

    I know we had a discussion on 3si about slow boost gauges. Originally the problem gauges were prosport, and I recall that the guy from prosport actually made an account to tell me that the needle response on their gauges were fine. well, i have reason to believe that the stri gauges use the same stepper motor as the prosport, since my boost gauge response was about as slow as the one pictured here.




    What's interesting to note is that although the sensor is applied the overboost pressure, the warning light doesn't come on immediately... it waits until the needle reaches the warning zone, rather than turning on right away. lazy circuitry if you ask me.






    needle speed of the prosport gauges:


    compare that to the needle speed of defi gauges:
    Last edited by i3igpete; 09-20-2010 at 10:04 AM.
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    "thoughts on crappy boost gauges" they are CRAP, they give you an idea you have boost thats about it. They are always at least a pound off usually more like 6 pounds off. Thats why i dont run a boost guage at all.

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    I think i had better results from a mechanical boost gauge from autozone then I have seen from prosport. There is not much that can go wrong from a mechanical gauge imo...

    My friends prosport gauge was off by 7 PSI compared to the mechanical gauge. That is the very reason why I spent the extra buck on good reliable gauges.
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    I stuck with a mechanical Autometer Cobalt and its doing just fine. I think I paid $80-90 for it.

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    But they look sooooo coooooool.
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    Quote Originally Posted by i3igpete View Post
    I know we had a discussion on 3si about slow boost gauges. Originally the problem gauges were prosport, and I recall that the guy from prosport actually made an account to tell me that the needle response on their gauges were fine. well, i have reason to believe that the stri gauges use the same stepper motor as the prosport, since my boost gauge response was about as slow as the one pictured here.
    I definitely remember that thread. If memory serves me well you told the guy to F off. lol

    I tried the prosport and didn’t like it or trust it. I have an AEM ready to go in now. I also bought a fuel pressure gauge that reads incorrectly that I will be getting rid of.

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    rawr. verified Feedback Score 4 (100%) Atrosity's Avatar
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    I have all aem gauges, very satisfied with the results and accuracy of the digital gauges.
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    @green fuel pressure gauge nice to have? I have a mechanical one in my engine I just put in.

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    1st ever COTM and COTY verified Feedback Score 9 (100%) green-lantern's Avatar
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    Quote Originally Posted by Atrosity View Post
    @green fuel pressure gauge nice to have? I have a mechanical one in my engine I just put in.
    Yeah I like to have it there to see if I'm running out of fuel but the prosport reads about 8psi off. I have a mechanical one under the hood also. I'm going to replace the PS with an AEM one.

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    Advanced Tech? verified Feedback Score 0 i3igpete's Avatar
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    Quote Originally Posted by green-lantern View Post
    I definitely remember that thread. If memory serves me well you told the guy to F off. lol
    i honestly think that the guy running prosport didn't have any electrical engineering experience. he very likely asked the chinese guys what he wanted in very vague terms, and they fulfilled his request very cheaply because he didn't specify any perforamnce criteria other than steady-state accuracy.

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    Thats why I bought Defi...
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