Originally Posted by
gmtech16450yz
I tried putting the whole table at 100%, but my stock table had 100's in the 50 and 80% columns anyway. I didn't notice any huge difference, and honestly I can't get any of the new "Load Damping" tables to have any effect on throttle, boost or timing. Setting the master between enable and disable doesn't seem to do anything on my OS.
Good point Term, I also noticed that 255% max in the temp airload table and thought "wth?" If there are hardcoded limits that we won't be able to get around, it makes me think we should be concentrating on the other approaches to getting power out of this ECM. I'm going to post some thoughts below that are NOT directed at you Term, just general thoughts I've been considering gathering and posting and your comment made me think of it again.
So here's a few more things I've discovered about this ECM, it might be obvious to some of you but for others it might shed a little more light...
This ECM is torque based, which means most everything it does is decided by how much torque is requested (by your foot), how much is desired (by throttle angle, boost, timing, etc) and how much is delivered (calculated by map, maf, timing, fuel flow, etc). So once you realize this, making more power can be done by more than one approach.
This is the part I think not everyone realizes. Most try to make more power by raising the requested or desired torque tables, like the DAL's or MALT's. You can also raise power by making the ECM "think" it's not making enough power, or basically it doesn't think it's producing what you're asking for. There's several tables that can do that, some of them are in the newest betas. We've had "Optimum Torque" and "Lambda Efficiency" already, and now we have "Optimum Spark" tables too. These all have a huge effect on power. If you lower the Lambda Efficiency numbers, it will calculate the torque levels lower, thinking it has to make more to match requested. If you raise Optimum Spark numbers, it sees actual ign timing is at, say 30*, you have say 60* in that cell, and the ECM "says" we should be making optimum torque at 60* but we're only at 30* so we need to make more torque by raising timing, boost, throttle, or whatever. As with any of this, BE CAREFUL manipulating some of these tables, you can literally end up going full throttle at 25% pedal position if you put in the wrong numbers. Raising numbers in Optimum Torque will raise delivered torque also. Try cutting the numbers in that table in half and you'll get a good idea of what it does.
Soooo, the cool thing about realizing the power of these other tables is they all compare different things, on different scales. So if you want to manipulate torque by making it think it's producing less at say, a richer mixture only, without effecting leaner mixtures, try working the Lambda Efficiency table. Or the Optimum Torque table, it works similarly to the DAL table, but the DAL table max is 100%, the Opt Torq goes to 210%, so if the DAL table isn't giving you the control you need over a certain rpm or load, try the Opt Torq table. Same idea with the Max Torque tables, you can lower torque with DAL's or MALT's, but what if you only want to lower torque in 1st and 2nd gears? Use the Max Torque vs. RPM vs. Gear table.
Sorry if all this is old news or common sense, I have to believe it isn't old news to everyone. Bottom line is there's more than just DAL's and MALT's in this ECM, and again, there needs to be more discussion so we can all understand more about how all these tables interact. I guarantee NO ONE has a lock on knowing everything there is to know about how these tables effect each other. For a computer with relatively few tables that we have access to, it's amazing how much interaction they all have with each other.
One last thought while I'm rambling... I know for a fact there are MANY more tuners and vendors reading this forum and some of these posts than are responding, why? I know the biggest reason has to be they're too busy doing their own work, but if you have time to read and learn, you should have time to contribute and share! And if you're worried about sharing because maybe you'll be letting your competitors in on your secrets, think about it this way, you'll gain more "secrets" by everyone sharing than you might loose by letting others know what you've learned. In other words, put it out there and you'll get it back ten fold. (Can anyone tell I believe in Karma?!)
And also, if anyone sees something in what I wrote that doesn't seem right or you know is absolutely bogus, let me know. These are my own thoughts and theories and I'm not saying it's all the gospel truth. After all, I didn't build this ECM, I'm assuming a bunch of German dudes did! I'm just trying to figure it out like everybody else in here.
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