Nismotronic Coolant Temp - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Hoffman5982 · 03-25-2017, 01:25 AM

I recently purchased a Nismotronic ECU for my KA-T build and will be running it soon. I'm wanting to run oil pressure and coolant temp the the ADC inputs. My question is with the coolant temp. Do I need an aftermarket temp sensor or will the oem sensor give an accurate reading? If I need an aftermarket sensor, Do I need to run it to an ADC input or can I run it through the oem cts input, disconnecting the oem cts from the system?

Also, if I need an aftermarket sensor, what is a suitable sensor? I've heard of people using GM sensors(TX3 I believe is the part #), would that work in this case since I'll need to input a voltage chart into the settings for whatever sensor is used?

Thank you guys for the help.

KAT-PWR · 03-25-2017, 10:13 AM

Nemu will translate factory temp sensor to actual value. No need to change sensor or wiring.
What pressure sensor for oil are you going to use? I've been trying to figure that one out.

Have you opened the Nismotronics software on the computer. In the sensor tab there isn't one for oil pressure but any 0-5v sensor I believe works.

OnTheChip · 03-25-2017, 10:20 AM

Coolant temp is already a stock input to the ECU, no extra sensor needed. Oil pressure sensor that outputs 0-5V can be connected directly to an ADC input.

Hoffman5982 · 03-26-2017, 10:05 PM

Quote:

Originally Posted by KAT-PWR

Nemu will translate factory temp sensor to actual value. No need to change sensor or wiring.
What pressure sensor for oil are you going to use? I've been trying to figure that one out.

Have you opened the Nismotronics software on the computer. In the sensor tab there isn't one for oil pressure but any 0-5v sensor I believe works.

I have not connected to it but was planning to hook it up this week. As for oil pressure sensor, I'll be trying to use a VDO type sender

bfellini · 04-25-2017, 01:58 AM

Where are you planning on plumbing the oil pressure sensor into?
If you're replacing the stock oil pressure switch on the block, then I would recommend a 1/8 BSPT pressure sensor with a known calibration curve... these are readily available from overseas vendors for standalones (New Zealand/Austraila, Haltech/Motec/Link, etc)...
I would honestly shy away from direct mounting a 1/8 NPT sensor with a BSPT adaptor to the block, unless you remote mount the NPT sensor with some suitable hose (AN -3) between the engine and sensor... Ive seen too many engines damaged by a steel or brass BSPT-to-NPT adapter failing from vibration.
Briefly looking at TunerCodeSA, Oil Pressure is not used for any calcs, and I assume only available as a logged channel for what it's worth.

As for the factory ECT sensor (2-wire for the ecu) Nismotronic has a stock calibration already

OnTheChip · 04-25-2017, 08:02 AM

NismotronicSA has programmable outputs (including the CEL or MIL) and/or a rev limiter that can be controlled by any voltage range of an ADC input. So you could have the CEL turn on at say 20psi oil pressure and a rev limiter set to 2500rpm below 15psi, for example.

LoSt180 · 04-27-2017, 11:46 AM

The Z32 has an oil pressure sensor and fits in the stock oil pressure switch location. You might be able to feed pin 1 to the Nismotronic input and pin 2 would go to the stock dummy light in your cluster.

The Kouki S14 SR has the same sensor since an Oil Pressure gauge was an optional part.

03-25-2017, 01:25 AM	#1
Hoffman5982 Post Whore! Join Date: Jan 2009 Location: Definitely NOT FL.... Age: 32 Posts: 2,504 Trader Rating: (25) Feedback Score: 25 reviews	Nismotronic Coolant Temp I recently purchased a Nismotronic ECU for my KA-T build and will be running it soon. I'm wanting to run oil pressure and coolant temp the the ADC inputs. My question is with the coolant temp. Do I need an aftermarket temp sensor or will the oem sensor give an accurate reading? If I need an aftermarket sensor, Do I need to run it to an ADC input or can I run it through the oem cts input, disconnecting the oem cts from the system? Also, if I need an aftermarket sensor, what is a suitable sensor? I've heard of people using GM sensors(TX3 I believe is the part #), would that work in this case since I'll need to input a voltage chart into the settings for whatever sensor is used? Thank you guys for the help. __________________

03-25-2017, 10:13 AM	#2
KAT-PWR Nissanaholic! Join Date: Dec 2011 Location: US Posts: 2,040 Trader Rating: (11) Rides Gallery: KAT-PWR Feedback Score: 11 reviews	Nemu will translate factory temp sensor to actual value. No need to change sensor or wiring. What pressure sensor for oil are you going to use? I've been trying to figure that one out. Have you opened the Nismotronics software on the computer. In the sensor tab there isn't one for oil pressure but any 0-5v sensor I believe works. __________________ MRP Manufacturing

03-25-2017, 10:20 AM	#3
OnTheChip Zilvia Junkie Join Date: May 2013 Location: Burgaw, NC Posts: 317 Trader Rating: (0) Feedback Score: 0 reviews	Coolant temp is already a stock input to the ECU, no extra sensor needed. Oil pressure sensor that outputs 0-5V can be connected directly to an ADC input. __________________ NismotronicSA - Speed-Density Tuning for Nissans

04-25-2017, 08:02 AM	#6
OnTheChip Zilvia Junkie Join Date: May 2013 Location: Burgaw, NC Posts: 317 Trader Rating: (0) Feedback Score: 0 reviews	NismotronicSA has programmable outputs (including the CEL or MIL) and/or a rev limiter that can be controlled by any voltage range of an ADC input. So you could have the CEL turn on at say 20psi oil pressure and a rev limiter set to 2500rpm below 15psi, for example. __________________ NismotronicSA - Speed-Density Tuning for Nissans

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04-25-2017, 01:58 AM	#5
bfellini Zilvia Member Join Date: May 2005 Location: Eagle Rock, CA Posts: 167 Trader Rating: (6) Feedback Score: 6 reviews	Where are you planning on plumbing the oil pressure sensor into? If you're replacing the stock oil pressure switch on the block, then I would recommend a 1/8 BSPT pressure sensor with a known calibration curve... these are readily available from overseas vendors for standalones (New Zealand/Austraila, Haltech/Motec/Link, etc)... I would honestly shy away from direct mounting a 1/8 NPT sensor with a BSPT adaptor to the block, unless you remote mount the NPT sensor with some suitable hose (AN -3) between the engine and sensor... Ive seen too many engines damaged by a steel or brass BSPT-to-NPT adapter failing from vibration. Briefly looking at TunerCodeSA, Oil Pressure is not used for any calcs, and I assume only available as a logged channel for what it's worth. As for the factory ECT sensor (2-wire for the ecu) Nismotronic has a stock calibration already

04-27-2017, 11:46 AM	#7
LoSt180 Zilvia FREAK! Join Date: May 2013 Location: MD Posts: 1,049 Trader Rating: (18) Feedback Score: 18 reviews	The Z32 has an oil pressure sensor and fits in the stock oil pressure switch location. You might be able to feed pin 1 to the Nismotronic input and pin 2 would go to the stock dummy light in your cluster. The Kouki S14 SR has the same sensor since an Oil Pressure gauge was an optional part.