| BlackHornet |
| (Newbie) |
| 07/06/20 09:34 PM |
Factory "boost gauge" signal?
|
Hey guys, bought vr4 not running and as I am making progress on getting it back up and going, I am planning ahead for some future things.
One question I have is, what kind of signal does the stock boost gauge get? I know that ECMLink can be used to change the gauge other things besides boost, like knock count.
From reading, it is my understanding that the 6 LEDs cannot be split up to show 2 different things and so I assume it can only have one input signal. So, does it operate off of a 0-1v signal?
I have tried searching and it appears as if the only returns that I get are people saying that its a terrible boost gauge.
Thanks!
| tektic |
| (Senior Member) |
| 07/10/20 11:42 AM |
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Re: Factory "boost gauge" signal?
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5v signal but controlled by a scale encoded in ecu.
| BlackHornet |
| (Newbie) |
| 07/19/20 10:03 PM |
|
Re: Factory "boost gauge" signal?
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gotcha, thanks! I was wondering how exactly it functioned
| Galant_martin |
| (Junior Member) |
| 12/23/20 07:48 AM |
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Re: Factory "boost gauge" signal?
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Is there any way to test this boost gauge? I want to use this in my EU Galant, but i dont find many informations about this thing.
There is one wire missing from my ECU connector (PIN3 Turbo Gauge), but are there other things what i need to change?
Thanks
| AllanL |
| (Heal and Toe) |
| 01/12/21 07:46 PM |
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Re: Factory "boost gauge" signal?
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supply max 5V to corresponding meter panel for the boost gauge.
if you have a variable resistor, use it to regulate the 5v signal to check each boost gauge LED.
| Galant_martin |
| (Junior Member) |
| 01/13/21 06:11 AM |
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Re: Factory "boost gauge" signal?
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Thank you. I will try that. I use Pin 23 from the ecu (maf Supply 5V).
EDIT
I tried it and all led‘s are working;) thx
| Dan D |
| (220, 221... whatever it takes) |
| 02/13/21 07:40 AM |
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Re: Factory "boost gauge" signal?
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It's said to be a terrible boost gauge because it isn't actually one. It is an approximated boost level based on the MAF signal to the ECU. It therefore, only approximates boost in a stock setup where the airflow/pressure correlation is known to the ECU. Change anything affecting airflow and it no longer tells you anything valid.
Better to reprogram it to be a knock gauge or some other functional indicator like which image on a dual imaged ECUs switching between gas and E85 your using.