Drive Pressure Data Logging, Part 1

McRat

Diesel Hotrodder
Aug 2, 2006
11,249
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Norco CA
www.mcratracing.com
Picture1 - Bad pic, this is the business end of a network cable. It has 4 pair of color coded wires for the 0-5v input to EFILive. I put a male blade connector on each solid wire which is POSITIVE, then a female on each striped wire which is negative.

Picture2 - This is a voltage divider circuit that we need to use to drop 12v down to 0-5v when using a variable resistor like the Summit Pressure Sender. The internet is a wonderful thing.

Picture3 - This is the network cable plugged into EFILive.

Picture4 - Top to bottom: Negative "medusa" ground wire to put ground to 4 sensors at one shot. Positive medusa to feed 12v to each sensor. A SPA sensor attachment, and it's brother.
 

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carcrafter22

< Danger Ranger
Dec 22, 2006
130
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Burleson,Tx
Pat you said that is a summit oil pressure sending unit? is this something that you could get at the local parts store? I am guessing yes. if so does it have to be for a specific vehicle? Do you have a part number for the summit sending unit?

Thanks
Randy
 

McRat

Diesel Hotrodder
Aug 2, 2006
11,249
26
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64
Norco CA
www.mcratracing.com
Pat you said that is a summit oil pressure sending unit? is this something that you could get at the local parts store? I am guessing yes. if so does it have to be for a specific vehicle? Do you have a part number for the summit sending unit?

Thanks
Randy

It's a standard oil pressure sending unit that will go up to 100PSI.

Each brand can be different so you use an air compressor and gauge to make a calibration map for each kind of sendor.

Couple more pic:

Pic1 - Kat got me a notebook mount that attaches to the passenger front seat bolts.

Pic2 - Put in a 3rd seat so I can legal haul both kids around.
 

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Kat

Wicked Witch of the West
Aug 2, 2006
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Another new title- "Fastest LLY soccer Dad on either Hemisphere"

:rofl: Well I have another one. Casper is so street able that his wife and kids drove it to the track for the finals in TX :rockon:

I'm making Pat drive Blue with the trailer :frog:
 

JoshH

Daggum farm truck
Staff member
Vendor/Sponsor
Feb 14, 2007
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Texas!!!
:rofl: Well I have another one. Casper is so street able that his wife and kids drove it to the track for the finals in TX :rockon:

I'm making Pat drive Blue with the trailer :frog:
You gonna load Wendy on the trailer and bring the whole family?
 

McRat

Diesel Hotrodder
Aug 2, 2006
11,249
26
38
64
Norco CA
www.mcratracing.com
Picture of modifications to the PPE riser block to accept LMM EGT sensor, a 1/8 NPT and 1/4 NPT. Use a slight larger than suggested tap drill on the pipe threads (.01") because the alloy is TOUGH:
 

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sweetdiesel

That's better
Aug 6, 2006
10,390
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Thailand
red = 10 + 0-5volts
black = 4 - ground


External input 1 = drive pressure


:nanawoot:It works! I can now log my drive pressure

the one small problom I have now is it just shows voltage
Do i build a new PID to voltage(EXT Input 1) = PSI:confused:

or do I need to modify the existing Calc PID?

As of right now it will show voltage on my EFI that is the same if i hook up the volt meter
 

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sweetdiesel

That's better
Aug 6, 2006
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Larry now i need to do some touch ups to the Calc PID

Next is to get logging through the EGR,then i will be able to log lift pump pressure and drive pressure....but the possibilities are now endless
 

sweetdiesel

That's better
Aug 6, 2006
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are you still monitering drive pressure with a gauge as well :confused:

YES:) all i did was tie into the back of the autometer full sweep 0-100psi gauge on PIN# 10 and pin #4 then ran the wires to the V2 input#1 and then added the Calc Pid that i posted into EFI v7 user config
 

sweetdiesel

That's better
Aug 6, 2006
10,390
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Thailand
one more thing is if we used a EGT that is electric full sweep we should be able to log EGTs also
with only using one probe

when dale gets back on boxing day we will try this