First attempt G4+ RB30

This is my first attempt at setting up any standalone ECM. The ECM I am using is a G4+ and the car is a Holden VL wagon with a N/A RB30E manual. I have done this using all the info I got from this course and others from HPA.

My goal is to keep it looking as it did straight off the factory floor 36 years ago but bring it into the 21st century as far as engine management goes.

I have added a Link wideband o2 sensor connector via CAN1 as well as a Link IAT sensor. I have changed the engines factory idle switch to a TPS and am using the onboard MAP sensor inside the g4+.

I will attach my ECM tune as well as a log of a power run I did from 0 to 120kmh today. Any constructive criticism or suggestions etc. would be massively helpful.

Thanks in advance!

I've made some adjustments to your map as a better starting point. The biggest change is removing many cells from your fuel and ignition tables, my approach is always to start with something basic and only add complexity when it is proven as needed. With less cells you have less work to do to get a basic tune that works well, from there, if you find a specific RPM patch where lambda doesnt follow target or there is a big change in ign advance required etc then you can just add a column or row in the problem spot when needed.

I pulled a little advance out of the ign table in the WOT row as that looked a bit excessive (Im no single cam RB expert but just from general experience). I made some fuel table adjustments in the few cells that were covered in the log. Reduced accel fuel cold multiplier, some idle control changes and added idle ign control. You can use the file compare function to highlight what I changed.

Hi Adam,

That's unreal thank you. The compare function is very cool also not used that one before. I will put this tune in the car asap and report back.

Couple of questions if you have time - what is advanced mode in the rpm limit option?

Also I cant really wrap my head around idle ignition control option you have enabled - why do we want ignition advance at idle? I can understand a small amount for fast idle on warm up etc. but there are values up to 7000 rpm?

Another thing is I didn't have any info on getting the wideband sensor to work but I played around with it and started to get a lambda correction value when I selected "Stoich mode" in the Closed loop lambda option - can you give any feedback on the options I have selected in the closed loop lambda section?

You will find the Link Help system very helpful. For example, the help for RPM Limit Advanced Mode clearly explains all the extra parameters you have to control the RPM limit with the Advanced Mode, they even provide an example with a nice graph and everything. I believe all your questions about advanced mode would be answered by reading the help.

There is even a HP Academy Webinar on setup in the Link RPM Limiter that you may find interesting:

https://www.hpacademy.com/previous-webinars/084-link-g4-rev-limit-configuration/

Want to learn more about idle control? -- check out these Webinars that demonstrate this on the Link G4+

https://www.hpacademy.com/previous-webinars/how-to-setup-idle-ignition-control-link-vipec/

https://www.hpacademy.com/previous-webinars/101-idle-speed-control-tuning-link-g4/

BTW - I found these by going to the Webinar section of the website, and searching for "Link" and "Link Idle"

I put this tune in and the idle control is great - the RPM is lower now and much more stable. On start up and the first few mins of idle time it is running very rich however.

Once it had warmed up >70 deg C the Closed loop lambda correction was sitting around 11%, I was able to bring this down to around 1% by bringing the master fuel up a little.

I completed a run 0 to 120ish km/h and the log is attached here. The latest tune is also attached with my changes. Do you have any more thoughts?

Thank you very much for your help this far