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Originally Posted by ScotI
I've been following this w/much interest & glad to review the latest successful results.
That being said, with Andrew assisting, is this only to speed up the learning curve? Or should this be a 'Must-Do' step w/the process? I know these systems are advertised as "Self Leaning" but we know that's a main/strong selling point to the DIY guy. While this type & similar set-ups can/do self learn, do they need a tuners ability to get things near/at optimum if you want it sooner rather than later?
And maybe Andrew (or someone else that has similar experience) can answer this....If you opt for no tuner & let the units ECU do it's thing, how long before it could/would reach the same tune?
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With my limited experience with this (like a few days worth) I believe this is a pretty accurate description of how the self learn process works.
So when you put your initial inputs in (size of engine, #@ cylinders, cam specs etc) the software picks a predetermined tune and puts it on ECU for you. This tune gives targeted ignition timing, AFRs, etc for a wide range of parameters and tells the ECU to shoot for this. You then go drive the car and the self learn portion corrects over those parameters and the percentages that the ECU has to use to correct each parameter are saved in the learn tables. Eventually the learn table is full (each scenario has been reached and corrected for) and you can either choose to let the software transfer the learn tables to the tune or a tuner can do that manually.
Then if you are happy you can disable the learn function and leave it like it is as a permanent tune or let it continue to learn and populate the learn tables with the corrections that it makes.
What tuners do is take the GCF and look at the learn tables and make corrections to the tune based off what they see. It's a much faster and more accurate way to dial the tune into what that particular engine wants and needs.
Andrew spent about an hour logged into my laptop, working with the Holley EFI software while my car was idling here in the shop to dial in the idle tune. He could tell just by watching the sensors what the engine wanted and made the changes in real time then watched again. This is the first step, getting the idle tune right...and also the hardest.
Once the idle tune was spot on, I drove it around...and sent him the GCF. He fiddled with it and sent it back and I uploaded the changed file and drove it again. Rinse and repeat. Each time it got better and better. It's just a much faster more accurate way to get the tune dialed in than the self learn process.
BTW, this is why I went with the terminator and not the Sniper...for easy use of the Holley EFI software to dial the tune in.
The software is FAST, it loads right away on my old laptop with zero issues and the GCFs are like 80 kbs big...so they are super quick and easy to save and email. That whole process is super quick.
Hope that helps...