Looking for Input: 370 Motorsport Data Logger

MotorvateDIY · 02-07-2025, 07:33 PM

Quote:

Originally Posted by Spooler

When you have a coil pack acting stupid it is invaluable. I had that happen to me at 16psi of boost. Knew instantly which one was the culprit.

Well... there you go again given an excellent reason!

I just read the Emtron ETC Manual and it would be very easy to get the data off the CAN bus.

I just need to receive and process the data at default CAN ID 0x691 (ETC4) or 0x700 (ETC8M)... or what ever it has been changed to.

Spooler · 02-07-2025, 07:50 PM

Not everybody needs a standalone. I had no choice due to what I was trying to do. For someone with an +800whp car these sensors and logging would be a great middle road. For just the hardware and sensors, it cost me $16,000 for my setup. I had a custom fab mount for a 5in. Emtron display so I could see it all the time and not have to drag out my laptop unless I wanted to log or pull the logs. If your prices are reasonable, you should sell it no problem. People may not want all the sensors. You can just do bundled packages.

MotorvateDIY · 02-08-2025, 10:37 AM

Since the Emtron EGTs are on the CAN bus, it shouldn't take too much time to figure out the data encoding and save the actual temperatures to the SD card.

I'll need to do some research to see what is the best option for exhaust pressure and intake air temp sensors.

Thanks for taking the time to provide input on this.

MotorvateDIY · 02-08-2025, 02:18 PM

Sometimes you get lucky...
The IAT sensor's electrical characteristics (temperature & resistance) are the same as the engine coolant temp sensor.

This means I have everything needed to calculate intake air temp, and since the temp sensor on MAF bank 2 isn't used, we can use it.

I'm also going to add crankcase pressure. This will indicate the amount of cylinder ring blowby.

MotorvateDIY · 03-06-2025, 07:48 AM

Parts have arrived...
Coolant pressure testing starts next week.

I'm very curious to see the how the pressure rises as the coolant temp rises.
Also, is the system pressure different with the thermostat open and closed?
Does engine increasing RPM increase system pressure?

I only have theories, but soon will have data.

Spooler · 03-06-2025, 11:48 AM

Quote:

Originally Posted by MotorvateDIY

Parts have arrived...
Coolant pressure testing starts next week.

I'm very curious to see the how the pressure rises as the coolant temp rises.
Also, is the system pressure different with the thermostat open and closed?
Does engine increasing RPM increase system pressure?

I only have theories, but soon will have data.

There is a big difference with the thermostat open and closed depending on the temperature of the engine. RPM does increase the pressure. The thermostat is a restriction which can increase the pressure over the radiator cap pressure. A lower cap pressure will reduce the overall pressure. A 19psi cap I will see 25-27psi at full tilt at 8000rpms. With a 13psi cap I see 15-17psi at 8000rpms. It also depends on where you measure the pressure. First thing to do would be get a baseline. We did that at 12psi of boost on my car. You are looking for a deviation from the norm.

MotorvateDIY · 03-07-2025, 07:59 AM

Great info!

Where did you measure the pressure? Top rad hose?

02-07-2025, 07:50 PM	#17 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,915 Drives: 2013 Nismo 370z Rep Power: 2684392	Not everybody needs a standalone. I had no choice due to what I was trying to do. For someone with an +800whp car these sensors and logging would be a great middle road. For just the hardware and sensors, it cost me $16,000 for my setup. I had a custom fab mount for a 5in. Emtron display so I could see it all the time and not have to drag out my laptop unless I wanted to log or pull the logs. If your prices are reasonable, you should sell it no problem. People may not want all the sensors. You can just do bundled packages. Last edited by Spooler; 02-07-2025 at 07:52 PM.

02-08-2025, 10:37 AM	#18 (permalink)
MotorvateDIY Base Member Join Date: Nov 2016 Location: Toronto Posts: 228 Drives: G37 Sport Rep Power: 6789	Since the Emtron EGTs are on the CAN bus, it shouldn't take too much time to figure out the data encoding and save the actual temperatures to the SD card. I'll need to do some research to see what is the best option for exhaust pressure and intake air temp sensors. Thanks for taking the time to provide input on this. Spooler likes this.

02-08-2025, 02:18 PM	#19 (permalink)
MotorvateDIY Base Member Join Date: Nov 2016 Location: Toronto Posts: 228 Drives: G37 Sport Rep Power: 6789	Sometimes you get lucky... The IAT sensor's electrical characteristics (temperature & resistance) are the same as the engine coolant temp sensor. This means I have everything needed to calculate intake air temp, and since the temp sensor on MAF bank 2 isn't used, we can use it. I'm also going to add crankcase pressure. This will indicate the amount of cylinder ring blowby. Last edited by MotorvateDIY; 02-09-2025 at 11:50 AM.

03-06-2025, 07:48 AM	#20 (permalink)
MotorvateDIY Base Member Join Date: Nov 2016 Location: Toronto Posts: 228 Drives: G37 Sport Rep Power: 6789	Parts have arrived... Coolant pressure testing starts next week. I'm very curious to see the how the pressure rises as the coolant temp rises. Also, is the system pressure different with the thermostat open and closed? Does engine increasing RPM increase system pressure? I only have theories, but soon will have data. Last edited by MotorvateDIY; 03-06-2025 at 07:52 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Vbox Mtorsport logger	Rusty	Track / Autocross / Drifting / Dragstrip	8	03-06-2019 11:57 AM
GT6 GPS/data logger/Visualizer	GSS138	Track / Autocross / Drifting / Dragstrip	8	05-08-2014 12:08 PM
Tach signal for data logger	pokeyl	Tuning	3	05-18-2013 03:18 PM
[FOR SALE] OBDII logger scanner Elmscan 5 with software and code	cossie1600	Parts for sale (Private Classifieds)	2	08-16-2012 01:27 PM
G37 engine logger	Nanometer	Forced Induction	9	11-01-2010 09:37 AM

03-07-2025, 07:59 AM	#22 (permalink)
MotorvateDIY Base Member Join Date: Nov 2016 Location: Toronto Posts: 228 Drives: G37 Sport Rep Power: 6789	Great info! Where did you measure the pressure? Top rad hose?