Wednesday, November 11, 2009

Connecting a DynoJet Wide Band 2 to an Emerald K3 is very straightforward. You'll need a data acquisition cable (76950114) which is surprisingly optional on some kits.

Here's the wiring:-

WB 2               
violet            K3 analogue-in e.g. AuxIn35
white / violet    K3 pin 30, signal ground
red               3 amp ignition switched live
black             chassis ground
black / white     chassis ground 

Make sure that the pull-up resistor is not enabled for your selected analogue-in. This is done on the Input Channel Configuration screen. The 100 ohm buffer resistor, required for the Innovate LC1, is not required for the DynoJet Wide Band 2.

No configuration or calibration is required, the output is pre calibrated to (volts * 1.6) + 10 = AFR.

In the K3's AFR/Lambda Input Calibration screen set the input source to the analogue-in as used above and enter :-

Input Voltage   AFR
0               10
1               11.6 
2               13.2
3               14.8
4               16.4
5               18

After the ECU has been updated with these settings, it will be possible to read the current AFR from the live adjustments screen. It will also be possible to use the K3's adaptive mapping and closed-loop fueling capabilities.

Tuesday, November 10, 2009

My Riot has been neglected of late. I have recently sold my house in Christchurch. All of my superfluous paraphernalia is now stored in the workshop. Now we are in the process of moving again. This time 4 doors down the same street! This house has a garage! A rarity in Romsey.
Anyway the Riot. I'm thinking of changing the lambda sensor on my car yet again! Why? The Innovate LC1 is awkward to install and configure, has a very sensitive output and requires configuring and calibration.

My search for an alternative yielded products from TechEdge and DynoJet.

Reading various postings it would seem that both are superior to the Innovate product.
I have used DynoJet kit before and have been impressed so DynoJet it is.

Here are the benefits over the LC1.

Fixed configuration, no programming is required. The 0 - 5V analogue output is always (Volts * 1.6) + 10 = AFR.
Auto calibrating. No manual free-air calibration required.
Faster response.
Better packaging. No external push switch or LED. The sensor to controller cable can be cut to length.
Robust output. No need for an in-line buffer resistor.

With this in place, I should be able to map the low load sites as required for IVA and use adaptive mode for the rest.