electric vs. mechanical gauges?
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This is a discussion on electric vs. mechanical gauges? within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; Im getting a Prosport Boost and EGT gauge.... whats the deal/difference between an electric boost gauge and a mechanical gauge? ...

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    Registered User wrex5's Avatar
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    electric vs. mechanical gauges?

    Im getting a Prosport Boost and EGT gauge.... whats the deal/difference between an electric boost gauge and a mechanical gauge? thanks....
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    Registered User teflon_jones's Avatar
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    Cars have gone to electronics in the last 20-30 years for a reason. However, mechanical gives you something that'll never go because of a fuse or electrical problem. I often struggle with this given my built 77 Ford. That's purely mechanical including the fuel pump and everything else and it's much simpler. But that's old school. Today electrical/electronic rules.
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    Electronic gauge will have a module somewhere in the engine bay for hooking into your vaccuum lines, then you'll just have to run wires from there to the gauge. Mechanical you will have to run the vaccuum line (from a T you will install) to the gauge, as well as wiring it up for lighting and what not.

    Either way you have about the same amount of work. The electronic gauge often gives better results, though, but they are far more expensive.
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    Registered User sjcurtis's Avatar
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    I like running wires alot better than trying to get the vaccuum line thourgh the firewall.

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    Good news, everyone! xxxxxxxAnub1s's Avatar
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    Quote Originally Posted by sjcurtis View Post
    I like running wires alot better than trying to get the vaccuum line thourgh the firewall.
    There are grommets, it's really not that difficult.
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    Registered User wrex5's Avatar
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    thanks for the info guys... looks like im goin electric
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    Registered User spnkdrm's Avatar
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    Quote Originally Posted by sjcurtis View Post
    I like running wires alot better than trying to get the vaccuum line thourgh the firewall.
    Thats why when I did my boost gauge, I did an electrical. With my luck, i would have pinched the line...

    My friend had an evo8 for a while and we did a mechanical one - PITA compared to the electrical in my opinion.
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    "Supreme Subaphile Extraordinairre" ninefourteener's Avatar
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    I have a bit of a different theory on this. Both my Boost and my oil pressure gauges are mechanical. I consider them the most important, and I intentionally chose mechanical gauges for those two.

    Simply put, because there is less to go "wrong". They are more simple.

    Everything else however, is electrical.

    Just my thoughts on the matter.
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    Registered User jd92677's Avatar
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    My opinion is that I'd use a mechanical boost, but any that involve fluids will be electrical. I don't want oil running through the cabin.
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    Quote Originally Posted by jd92677 View Post
    I'd use a mechanical boost
    +1 to this. It seems that electronic gauges have a small amount of a lag present from digital sampling. For something like oil temperature/oil pressure, that's OK... But a parameter that continuously varies from high to low (like boost) should be monitored by a mechanical gauge.
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    "Supreme Subaphile Extraordinairre" ninefourteener's Avatar
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    Quote Originally Posted by jd92677 View Post
    My opinion is that I'd use a mechanical boost, but any that involve fluids will be electrical. I don't want oil running through the cabin.
    Agreed... which is why I use copper tubing on my OP gauge. That nylon stuff will wear out eventually.

    5 years... haven't had a leak yet with my OP.
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    Registered User wrex5's Avatar
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    damn.I just ordered an electric boost gauge the other night. guess i shouldve went mechanical with that. so the mechanical gets a more accurate read is what ure saying?.
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    Registered User jd92677's Avatar
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    Quote Originally Posted by wrex5 View Post
    damn.I just ordered an electric boost gauge the other night. guess i shouldve went mechanical with that. so the mechanical gets a more accurate read is what ure saying?.
    I don't know if it is more accurate if the electrical gauge is working properly, but there is less to go wrong with a mechanical gauge.
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    Registered User ElusiveSAV's Avatar
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    bump for more opinions. I am thinking of going with mechanical because of the real time accuracy with no lag. If I wanted electric I could just use my AP. Other thoughts?

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