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I just wrote this up again at Supraforums and I though some of you might want the info, so here it is:

If you're converting kg/cm^2 (on the GReddy gauges and other brands as well) here are the factors so that you can do it by sight (from http://xtronics.com/reference/convert.htm):

1.0 kg/cm^2 = 14.223 psi
1.0 psi = 0.070309 kg/cm^2
1.0 bar = 14.508 psi (this means that 1.0 bar != 1.0 kg/cm^2, but is close)

0.8 kg/cm^2 = ~11psi = stock boost on a JZA80
~1.15 kg/cm^2 = 16psi (max boost without detonating on 92 octane on JZA80)
~1.25 kg/cm^2 = 18psi (typical boost people run on 100 octane on JZA80)

 

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Glad this is helpful.

Wade -- where will you be installing your EGT gauge? Everything that I've read is that the best place is in the 6th runner...

 

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I was planning on going with an EGT gauge as well, but then I learned that it wasn't really going to give me what I was looking for...

http://www.sdsefi.com/techegt.htm

Basically (not that you asked) I'd suggest nuking the EGT gauge and going with an FJO or something... If you got GReddy gauges you should be able to sell it for a decent price and put the money toward a wideband or something of that nature...

JMO. HTH.

Not trying to tell you what to do -- just trying to understand what you're looking for with such a gauge and determine if you're going to get what you're looking for.

 

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Send the EGT back. With a true wideband (not a cheapie A/F sensor and gauge) you don't need an EGT gauge and it won't help you.

 

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Btw, I think that the fuel pressure gauge is a great idea.

Oil temp and pressure would be good too.