No brand AFR Gauge
#1
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No brand AFR Gauge
Scenario, want a cheap AFR gauge just for peace of mind whilst street tuning MS.
What do people think about using the no-brand el-cheapo gauges that ebay has to offer with the LC1? Most of them work with a narrow band sensor but that's ok because the LC1 can emulate narrow band.
The question is, will it give useful data to make it worth buying a digital read out gauge or would it be better to have a basic indication of mixture from a guage like the one below? Bearing in mind that when I'm tuning I'll have a laptop, the guage is just to warn me if I'm about to melt a piston.
Opinions?
What do people think about using the no-brand el-cheapo gauges that ebay has to offer with the LC1? Most of them work with a narrow band sensor but that's ok because the LC1 can emulate narrow band.
The question is, will it give useful data to make it worth buying a digital read out gauge or would it be better to have a basic indication of mixture from a guage like the one below? Bearing in mind that when I'm tuning I'll have a laptop, the guage is just to warn me if I'm about to melt a piston.
Opinions?
#4
We've rigged LC-1s to drive these types of gauges before. It's actually better to set it slightly different from narrow band emulation - have it give you 1 volt at 10:1 and 0 volts at either 18:1 or 20:1. Not as good as a gauge designed for it though; if you don't already have an LC-1, it's probably going to be cheaper to order one bundled with a DB gauge.
P.S. The gauge in your first post looks like it's actually from Auto Meter's cheap gauge division, unless it's fake.
P.S. The gauge in your first post looks like it's actually from Auto Meter's cheap gauge division, unless it's fake.
#7
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We've rigged LC-1s to drive these types of gauges before. It's actually better to set it slightly different from narrow band emulation - have it give you 1 volt at 10:1 and 0 volts at either 18:1 or 20:1. Not as good as a gauge designed for it though; if you don't already have an LC-1, it's probably going to be cheaper to order one bundled with a DB gauge.
#8
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Or you can get a cheap panel display voltmeter like THIS. Then set up the analog out for 1V=10:1, 2V=20:1. Most of these elcheapo displays give you an option of setting up a 10x multiplier to move the decimal, meaning if your air fuel ratio is 10.5:1, the display would read 10.5 because the LC1's analog out would be sending 1.05V to the gauge, 1.05 x 10 = 10.5. Get it?
#10
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The cool part about a numeric gauge is that you know when you're .1 off from where you should be. I was running 11.8:1 on the track before I tuned for heat soak. Now its back to 11.3:1 on the track in boost.
#11
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Here, this one is listed as being scalable
New Digital Red LED DC 2V Volt Panel Meters rescalable - eBay (item 250558674057 end time Jan-05-10 23:34:22 PST)
New Digital Red LED DC 2V Volt Panel Meters rescalable - eBay (item 250558674057 end time Jan-05-10 23:34:22 PST)
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