Mechanical or Electrical?
not straight through (Mr. Cheap = Mr. Crispy
if Things Go Wrong).
I would put a vac/boost gauge as #3. Just
for amusement mainly, at least it does
something (manifold air pressure).
Don't get fuel pressure, it's really expensive and almost as useless as an A/F ratio gauge. Water temp would be the first one to get, way ahead of any others. You can also get oil pressure, but thats more involved in terms of install. I went with water temp, trans temp, and A/F ratio. The A/F gauge is useful if you know how to use it, but it won't give any hard numbers. The trans temp can be useful on long trips or race days, but it's more for an A4 than an M6. All three wer cake to install.
Don't get fuel pressure, it's really expensive and almost as useless as an A/F ratio gauge. Water temp would be the first one to get, way ahead of any others. You can also get oil pressure, but thats more involved in terms of install. I went with water temp, trans temp, and A/F ratio. The A/F gauge is useful if you know how to use it, but it won't give any hard numbers. The trans temp can be useful on long trips or race days, but it's more for an A4 than an M6. All three wer cake to install.
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Electrical gauges cost about the same as mechanical, except for fuel pressure.
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Electrical gauges cost about the same as mechanical, except for fuel pressure.
Where did you hook up the wires ? I'll order a gauge tomorrow but don't even know what to tap into once i get it








