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Datalogging C7Z

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Old Jan 29, 2022 | 07:25 PM
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What do we need to datalog our cars? Cant we just buy something that plugs into the OBD2 port or do we need to weld in a bung and run a cable to something?
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Old Jan 30, 2022 | 02:36 AM
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I imagine it depends on what you want to data log. There is plenty of vehicle performance information captured by the PDR but it doesn't capture fuel/air mix. The data is embedded in the PDR MP4 file and you need the Cosworth Tool Set to see the parameters.

Bill
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Old Jan 30, 2022 | 08:17 AM
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HPTuners MPVI2 and VCM Scanner
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Old Jan 30, 2022 | 11:01 AM
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If you install a wideband into the exhaust you can data log while you operate the car. run the cable through the grommet on the left side of the drivers left foot. I can't remember what comes through, but not hood release on the toe. I removed the wheel well insert and the drivers side vent where the TCM module lives, I think. It is behind that. I am using the inline wideband and hooked it into the serial port of the MPVI2.
I'll take picture later and post them.
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Old Feb 3, 2022 | 11:12 PM
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Originally Posted by wutang
hptuners mpvi2 and vcm scanner
x2!!!!
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Old Feb 4, 2022 | 09:18 AM
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You can datalog with something cheap which will give you basic unorganized information. Or you can spend $ and get HPTuners and the MPVI2 interface and have a real data logging tool that can also be licensed to program/tune your car if you decide to modify it. Often, people will add a Wideband Oxygen sensor, which requires a bung and sensor to be installed in the exhaust. This will then allow you to add Air Fuel Ratio(Lambda) to your datalogs. As a remote tuner I require this for any significant modifications if the user cannot get on the dyno. But you don't need this to datalog. It really depends what your goals are.
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Old Feb 4, 2022 | 06:59 PM
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Originally Posted by JimmiT
If you install a wideband into the exhaust you can data log while you operate the car. run the cable through the grommet on the left side of the drivers left foot. I can't remember what comes through, but not hood release on the toe. I removed the wheel well insert and the drivers side vent where the TCM module lives, I think. It is behind that. I am using the inline wideband and hooked it into the serial port of the MPVI2.
I'll take picture later and post them.
The TCM at least on the C7Z is at the rear of the car, passenger side just to the side of the muffler.

Originally Posted by Internets_Ninja
You can datalog with something cheap which will give you basic unorganized information. Or you can spend $ and get HPTuners and the MPVI2 interface and have a real data logging tool that can also be licensed to program/tune your car if you decide to modify it. Often, people will add a Wideband Oxygen sensor, which requires a bung and sensor to be installed in the exhaust. This will then allow you to add Air Fuel Ratio(Lambda) to your datalogs. As a remote tuner I require this for any significant modifications if the user cannot get on the dyno. But you don't need this to datalog. It really depends what your goals are.

This is the correct answer. The MPVI2 is only $260, the HP Tuners Scanner software and tuning suite is free. It wont cost you a thing to data log to your hearts desire and even clear codes using the VCM Scanner program. At that point you wont be out anymore money unless you want to get into tuning the ECM and TCM.
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Old Feb 5, 2022 | 12:41 AM
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Originally Posted by TJay74
The TCM at least on the C7Z is at the rear of the car, passenger side just to the side of the muffler.




This is the correct answer. The MPVI2 is only $260, the HP Tuners Scanner software and tuning suite is free. It wont cost you a thing to data log to your hearts desire and even clear codes using the VCM Scanner program. At that point you wont be out anymore money unless you want to get into tuning the ECM and TCM.
I was mentioning a spot where you can feed the wide band cable into the passenger compartment of the car. Plug it into the inline controller,(AEM) and plug that into the serial port of the MPVI2. Thus using the OBDII plugin and get all your logging from one plug. I tuck the extra wires up under the dash nice and tidy, in case I need to pull it all the way out.

The plug-in for the OBDII port is the key part to access. Drivers side under the dash next to the door. I could be mistaken, but that is where it is located on 2019 Z06's.

I can show you my logs if you are a non-believer. But, it's working for me!

I can't remember what the computer part behind the drivers side vent is called. I wasn't plugging into that. Maybe someone else here knows what that part is.

I did need to remove that part in order to reach the rubber grommet about 8 inches from the OBDII plug.


Last edited by JimmiT; Feb 5, 2022 at 01:02 AM.
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Old Feb 5, 2022 | 10:16 AM
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Originally Posted by JimmiT
I was mentioning a spot where you can feed the wide band cable into the passenger compartment of the car. Plug it into the inline controller,(AEM) and plug that into the serial port of the MPVI2. Thus using the OBDII plugin and get all your logging from one plug. I tuck the extra wires up under the dash nice and tidy, in case I need to pull it all the way out.

The plug-in for the OBDII port is the key part to access. Drivers side under the dash next to the door. I could be mistaken, but that is where it is located on 2019 Z06's.

I can show you my logs if you are a non-believer. But, it's working for me!

I can't remember what the computer part behind the drivers side vent is called. I wasn't plugging into that. Maybe someone else here knows what that part is.

I did need to remove that part in order to reach the rubber grommet about 8 inches from the OBDII plug.

Your post said "you removed the Drivers side vent where the TCM lives", I was just correcting and mentioning the TCM is located in the rear of the car on the C7. The ECM is located in the drivers side front fender.

With that, if a person is using HP Tuners all access to the OBD2/ALDL port is inside of the cabin. If you are using a WBO2 then yes you would need to route the cable from the O2 sensor into the cabin so you can plug it into the WBO2 controller which then plugs into the OBD2 port.
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Old Feb 5, 2022 | 11:10 AM
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TCM is in the back. ECM is on the passenger side. Mag ride controller is on the driver's side.

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Old Feb 5, 2022 | 12:17 PM
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Originally Posted by Jeff V.
TCM is in the back. ECM is on the passenger side. Mag ride controller is on the driver's side.

i questioned myself on the ECM after I posted that as I remembered the Ethanol sensor had to be wired in thru the passenger side fender after I got to thinking about it.
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