Roland@pcmtec

Probably power/earth or the canbus loop is back to front.

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https://www.pcmtec.com/professional-to-workshop-upgrade

This parameter is only available in the workshop edition.

044 with a stock reg is most likely spiking fuel pressure at idle as the return flow will exceed the flow rate of the reg or the tank return. You MUST log fuel pressure on every single car you tune. You will save hours and hours and likely a few motors as well.

Yes it will add fuel due to 0v being lean but it will force open loop for a failed O2 sensor fault eventually.

Have you checked your fuel pressure at idle? What pump and what regulator?

Great info Bill! Does anyone know what DSC actually does btw?

Windows 7 was discontinued by Microsoft in January 2020. It is now almost 12 years old. Some people have managed to run it in Windows 7, but you'll need various hacks to get .NET 4.7.1 installed and then also find all the required VC++ runtime DLLs. The editor will also run like a complete dog on computers old enough to still be running Windows 7. We use a fairly modern theme engine and graphics library which requires a relatively modern PCs. Also its heavily multi threaded and can cause UI lockups with anything less than a 4 core processor. We don't officially support it because of all of the above reasons.

I believe their data is from a flow bench. It's not from a car that has been tuned with it. They then tune the speed density to suit. Lots of tuners do this. Personally I believe this approach is wrong and causes lots of side effects (eg the change to speed density changes load which changes spark/torque and hence also changes the gearbox tune) If you put stock ford injectors on a flow bench the numbers won't match what is in the computer. So really the main use of a flow bench is to determine the relationship of high to low slope and the dead time, you then scale them via trial and error with no changes to speed density. The resulting numbers should then be used with that fuel pressure. We are covering this in the tuning guide that Dave Symons is writing. So short answer, yes their data does not work in my personal experience and also from other tuners. The same is true for 100% of injector data I have ever used. ID was the closest but nothing has ever worked out the box. Injector scaling is not hard but it seems illusive to a lot of people who make them in my experience.

Correct it changes the stoich so if your injectors are properly dialled in you shouldn't have to touch speed density or the slopes for the e85 tune.

The multi tune is 10 credits. The stock file license is 3 credits. Therefore the difference is 7 credits.

Sounds like battery/power issues to me from your description.

It's the reverse, larger numbers are richer, smaller numbers are leaner. Eg in the e85 thread everyone ends up with big numbers. The multiplier is actually a divider for lambda so larger numbers is richer. We had it wrong in the thread initially, I've updated the early posts in case people are not reading the whole thread.

Have a read of this thread. It's covers a lot of these tables https://forum.pcmtec.com/topic/264-cold-start-e85/

Foreground borderline and borderline are basically the same thing. It just means one of the various adders is causing the spark to limit at the borderline value. For what you are doing you can assume they are the same.

We will be publishing it as an embedded doc in the editor that will be available for purchase with credits. We don't have an ETA as it depends on Daves workload but will let everyone know when it is available.

No but Dave Symons is working on a training manual. If you want to know what something means post a forum thread. There is 20 years of engineering in these processors from 100s of engineers. It is not something you can expect to pick up over night. Set view - > pcm to enthusiast only and disable the other levels to simplify the parameters shown.

Should be all sorted now.

Speak to tiperformance

Sounds like a problem with the cable or laptop then. I would try another laptop or usb port at least if you can.

From Ti Performance https://www.tiperformance.com.au

Efi live already offer a huge amount of support for GM. I don't see anyway we can add value.

Can you guys try Forscan and see if that connects. If not contact Jason at Ti Performance directly and see what he recommends to rule out a hardware issue. Afaik that is the legitimate Ti Performance ebay store and the pricing suggests so. https://www.tiperformance.com.au/contact/

How much was it? Was it from this store? https://www.ebay.com.au/str/tiperformance There are lots of fakes on ebay.