JoaoCaldeira
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| posted on 10/11/09 at 06:26 PM |
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Gauges.
Hi.
I need a set of 3 gauges:
Boost (turbo)
Fuel pressure
AFR (without sensor / controller, just a 0-5v "reader"
They should be 2" / 52mm
They should be similar (same brand / model) and preferably low cost.
I can find Boost and Fuel pressure easely, but generally AFR are narrowbands, or include a sensor and controller, which I already have.
Do you have an opinion on suitable gauges?
Thanks in advance,
Joao
[Edited on 09/11/10 by JoaoCaldeira]
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tomgregory2000
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| posted on 10/11/09 at 06:29 PM |
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???????????????????
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JoaoCaldeira
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| posted on 10/11/09 at 06:30 PM |
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Don't know how I sent and empty message...
Now corrected!! 
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britishtrident
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| posted on 10/11/09 at 06:44 PM |
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Just an idea but a narrow band AFR is 0 to 1v if for the wide band you want 0 to 5V just use a drop resistor in series with the gauge.
[Edited on 11/11/09 by britishtrident]
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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robocog
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| posted on 11/11/09 at 10:04 AM |
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Most AFR controllers I have looked into seem to have a second output that is configurable
I know mine has and I just chucked a narrowband gauge on the other output from my controller and progged it to output 0-1v
Regards
Rob
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JoaoCaldeira
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| posted on 12/11/09 at 04:15 PM |
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Mine has a simulated narrowband output, but looking to the output voltage vs. afr reading, I had 2nd doubts on if it was reliable or not.
What's your experience?
Joao
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robocog
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| posted on 12/11/09 at 07:18 PM |
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It should be the same...as its simulating a narrowband sensor so /should/ be the same
Which controller are you using?
Some have the ability to just output a fixed voltage to the outputs, so you can check what voltage does what to the needle and get plotting to make it
suit what you want
I am using a JAW where both outputs are configurable and I spent days trying to get guage and megasquirt to agree ...and I think I got close enough
for what I want
(though wouldn't be at all surprised if it was way out of whack :-) )
Recently my gauge started to play up a bit and became very inconsistent and think I found that the gauge has some issues as I could make it read
richer or leaner by bending the bracket that holds in onto the tunnel...so possibly a bad ground/connector somewhere
Need to wait for a less wet day and hook laptop up and multimeter to see what is going on
Regards
Rob
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