Nissan 370Z Forum - will i need A/F sensors and box

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will i need A/F sensors and box

Hey guys if im going FI, and purchase the blitz touch brain or any reader, will i need to purchase an O2 sensor cable and sensor box to hook it up to the system for it to read the A/F, or can i use the existing O2 sensors that are alread on the car to hook it up to the reader, the sensor and box cost something close to 600$ so im hoping that i wont need to purchase that part.

This is something I ran into as I have gauges that read the factory O2 sensors.....

The factory o2 sensors are not true widebands, and therefore I would recommend an aftermarket sensor.

Depending on the system (i don't know blitz at all) i chose to go with the innovative lc-1 as it has a 5v out that will work with most digital gauges/systems

Ohh ok thank you for the advice so I should buy the extra a/f box, can you please show me what you are running to monitor you af bosst etc

factory sensors are wideband. I am reading them through obd2 using dashcommand and when comparing the readings to my innovate mtx-l they are very similar if not the same. I keep the actual gauge on the glove box just for peace of mind but I mostly go by the stock sensors.

What happened to the JUN cams?

So there will be no need to purchase the a/f box ?

Depends on the system you go with. Blitz R-VIT DS does not require additional sensors to read from AF from OBD2. HKS Camp 2 does.

What I do, like mentioned above, is read AF via OBD2 using DashCommand installed on a CarPC and keep a standalone AFR gauge on the glove box.

What about the blitz touch brain? Vit ds has been discontinued

Looks like it should work without any additional sensors, you will need a sensor for boost though.

Quote:

Product Specs
Brand: BLITZ
Product: Touch B.R.A.I.N
Part Num: 15158

FEATURES:
- 3.5 inch TFT/Touch panel display. Achieve better operability and visibility.
- Easy installation by connecting to OBD connector
- Newest program can be downloaded from Blitz website for future upgrades.
- A variety of graphics can be displayed, such as Racing mode, 3D mode, and Eco mode
- Logging data while driving can be saved into USB memory or SD card
- Equipped with Data logger function to watch saved data on the PC. Real time logging to connect to the PC with original USB cable Separately available) is also available
- Equipped with a Reflash function which can rewrite standard ECU data through the SD card which has a tuning program (Separately available). Simply execute the program on the Reflash mode and reprogram the standard ECU.If the standard program is backed up, it can be recovered easily.
- By connecting original sensors to the Junction Box (separately available),external input data for real can also be displayed.
- Wide range of both Japanese and European fitments available.

SPECIFICATIONS:
Dimensions (mm): 15 x 133mm × 74mm
LCD screen: 3.5inch TFT LCD Touch Panel
Display Items: up to 50 (up to 8 items can be displayed simultaneously)
Show Style: 56 categories
External features: USB, microSD, can be connected to PC
Accessories: Universal Monitor Holder

Readings:
- Rotation
- Vehicle Speed
- Ignition
- Throttle
- Water Temperature
- Intake Temperature
- External Air Temperature
- ATF Oil Temperature
- Exhaust temperature voltage
- Airflow
- Airflow 2
- Airflow Hz
- Intake Manifold
- Boost
- Solenoid
- Solenoid 2
- Air intake g/s
- Air intake %
- I/J ms
- I/J %
- I/J 2ms
- I/J 2%
- Gear
- Power
- Distance
- Real-Time fuel consumption
- Average fuel consumption
- Cumulative mileage
- Mileage interval
- Fuel Consumed
- Fuel Cost
- A/F Control 1
- A/F Control 2
- A/F 1
- A/F 2
- A/F Restore 1
- A/F Restore R
- A/F Restore 2
- A/F Learning 1
- A/F Learning 2
- O2
- O2 R
- O2 2
- Battery
- Fuel pressure
- Fuel temperature
- 4WD

PRODUCT NOTES:
- works with most vehicles with OBD port and can also work on older Nissan models with the addition of an extra wiring harness.
- Depending on the vehicle, there might be information that cannot be displayed.
- Please contact us with vehicle details for further information on wether the Touch B.R.A.I.N will work with your vehicle and for information on what can be displaye

Thanx a lot for clearing that up bro, what about boost sensors I'll deff need that right

Correct, you will need additional sensors for anything that OBD2 doesn't provide. Boost, oil temp, oil pressure, fuel temp, exh temp etc etc.

Cool thanx Ron for your help, don't our cars already read oil temp? Will I need all of that for FI?

It does read it but it is not an OBD2 parameter, there is a separate sensor for it. I am still using the stock gauge to monitor oil temps.

Thanx man a lot, so a/f reading and boost should be enough for starters and can get everything later on, thanx again bro for clearing everything up rep coming ur way:D

Anytime man :tiphat:

This is what I am monitoring on my system, plus oil temp on the stock gauge:

http://i108.photobucket.com/albums/n...3/IMG_1625.jpg

Nice bro what system are you running looks like it's custome

Really nice clean job, I think I'll stick with the brain since your setup seems like there is a lot of work involved in it lol

I'd better stick with the touch brain, from what you have read about it and according to your expertise and experience what do you feel about it, since I have not seen any one on the forum use it

I've never seen or used one either. I am sure it does what it is advertised. That's the way the old VIT was. Which btw u can probably still get. Ask Sam@GTM.

I wish I can get the vit man, but they have been discontinued tried contacting Sam with no response from him but guess he's out to

Quote:

Originally Posted by Ron (Post 1741645)

factory sensors are wideband. I am reading them through obd2 using dashcommand and when comparing the readings to my innovate mtx-l they are very similar if not the same.

From what I understand the OEM sensors are widebands, but not to the same tolerances as an aftermarket wideband. The OEM widebands do not read accurate below 12:1 on the a/f scale. This makes sense because an N/A car should never run richer than that.

The donor car I just built the ST kit for has a significant discrepancy between the LC-1 and the OEM O2 sensors. I would never rely on the OEM sensors for tuning a turbo/supercharged Z. This was confirmed by one of the most respected pro tuners in this Z community over the phone a couple of weeks ago.

Yeh actually I just read something similar to what you have just stated, above the oem will read af but to a certain extent then becomes less accurate after that

Quote:

Originally Posted by Boosted Performance (Post 1741770)

Correct. Hence why I have an mtx-l as well.

Ok so it makes so much sense now, the car will be able to read af but if I want a more accurate reading better spring for the af box and cable

yes, or a standalone gauge.

To give you an idea of how inaccurate the factory ones are, my factory sensors will read 10 flat and my innovative will read 11.2-.4

This is what I run
http://www.the370z.com/members/jmac8...9-p1000681.jpg

All 3 gauges pull info right from the ECU through the OBD2 port, with the option to hook up external sensors such as boost, and afr. As I said, I run the LC-1 from innovative because it has a 5v output and has the option to work directly with Uprev which was a huge feature for me. If the blitz unit accepts 5v signals for sensors, I would recommend this unit.

oh cool thanx man, was thinking actually to mount gauges the same way you did, just curious though how hard was it to switch out the oem gauges to the ones that you have right now?

It's not hard, but a bit scary. I did it this way

http://www.the370z.com/diy-section-d...e-cluster.html

So you have to be comfortable knowing the factory gauges will never go back in