Category: Latest Software

NTK Wideband Sensor Firmware Update – May 2023

What is this?

Nexus Firmware Update V1.22 and Elite Firmware V3.08 include an important update to the functionality of NTK Wideband sensors. This update will require NTK users to perform a free air calibration, followed by an engine re-tune.

Why are you doing this? 

Adding the free air calibration for NTK sensors improves the accuracy of these sensors, and allows the Haltech software to better compensate for variations in individual sensors, due to manufacturing tolerances and/or age and wear of the sensors.

Who does it affect? 

All Nexus users and Elite users with NTK wideband sensors.

When will I have to perform the free air calibration?

Initially, you will be required to perform the calibration as soon as the firmware update is complete. You may also want to periodically perform the free air calibration to check ongoing sensor health. 

Can I skip this calibration? 

Yes, however, wideband/lambda control will be disabled until the free air calibration has been completed.

Do I need to remove the sensor from my exhaust for the calibration?

Yes, this is a free air calibration and it is best practice to remove the sensor from the exhaust to perform the calibration. 

Will I need to retune the engine after performing the calibration? 

Yes. During the firmware update, the indicated air-fuel ratio will likely change (even though the actual air-fuel ratio should not). This may require changes to the target lambda table and the fuel map to compensate. Therefore vehicles using closed-loop O2 control must be retuned, in all other cases, we strongly recommend a dyno checkup after upgrading the firmware and performing the initial sensor calibration. This should not be necessary after subsequent calibrations.

I did the calibration, but the software still says my sensor is uncalibrated – what gives?

It is likely that your NTK sensor has worn beyond its usable range and needs replacing. The software was previously unable to detect this. 

After the initial calibration, will the sensor require ongoing recalibration? 

Yes, in rich methanol mixtures, best practice would be to run the free air calibration before the engine sees heavy load. Eg: Dyno power runs, full noise drag passes. 

I have a Bosch wideband sensor, do I need to do the calibration? 

No. Only NTK sensors are affected

NSP for Elite is here!

Ever since we released the NEXUS R5, people have been telling us how much they like the Nexus Software Programmer (NSP) Software.

Creature comforts like the intuitive layout, multiple display themes, and adjustable font sizes make it a nicer software package to use than our earlier Elite Software Programmer (ESP), and because of that we were often asked if you can use NSP to tune an Elite series ECU. Well, now you can!

The new Elite Firmware 3.00 makes all Elite ECUs compatible with NSP. This update covers all models of Elite ECUs: Elite 550, 750, 950, 1000, 1500, 2000 and 2500 as well as the Elite VMS. It doesn’t matter whether you bought your Elite yesterday or when it first came out, this update covers ALL Elite Series ECUs.

Best of all – the upgrade is FREE for all Elite users.

What you get with this upgrade:

• Dramatically faster connection speeds to the software
• Loop Logging for Elites and improved data logging setup
• On Board Oscilloscope for all Elites
• Trigger and home voltage readout in scope available for Elite2500/2000/1500/1000
• Individual setting password protection
Plus all the other NSP goodies like Advanced Quick-Tune, Undo/Redo on any change, and the improved layouts.

How to update your ESP to NSP on your Elite ECU:

Step 1: Download the new version of ESP here: www.haltech.com/downloads
Step 2: Install the new ESP software and go online with your Elite Series ECU.
Step 3: Under the “Tools” menu select “Update ECU for use with NSP Software”.

Alternatively, if you already have the latest software version, you can use the ESP Online portal to access the most current version of Firmware for your Elite ECU and update it.

IMPORTANT: Before updating the Firmware on your ECU always disconnect your ignition system.