Quote:
Originally Posted by WarmAndSCSI
I'm going to hold by the fact that a properly-tuned e-Manage Ultimate + a little EcuFlash magic is the best way to make power on this platform without going full standalone (i.e. if you live in a CARB-like state like me). And by power, I mean anything more than 320-350 WHP.
You will find more and more limitations with the stock ECU each time you try to up the ante. Mark my words...
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The only limitation we found so far was not having the big maps, or getting it to read above 100%, which we have done so far...and this project is still in its early stages like all others before it.
Quote:
Originally Posted by WarmAndSCSI
And it's not the MAF that is limited, it's the input into the ECU. The ECU doesn't interpret anything greater than the value I mentioned. Our MAF is identical to the 4 cyl MAF IIRC, and very similar to the Evo one, if not identical electronically. I've seen 4 cyl logs before, and it doesn't seem like they have this cap at the ECU end.
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So then really all that needs to be sorted out is the input to the ECU. I mean if I understand this correctly, then the MAF itself isn't capped, just the ROM information for the stock ECU likely is then.
Quote:
Originally Posted by WarmAndSCSI
People are using MAF setups using piggybacks just fine because they allow you to add injector pulsewidth directly when setup accordingly. In fact, you can add duty cycle/pulsewidth relative to boost pressure, or MAF Hz if you so desire. The problem arises where you end up needing higher ECU-side load cells when you have large enough injectors that you cannot increase the IDC any more (+IDC is maxed at +100%) because of re-scaling on the ECU side. This is where I was stuck at, and needing a different solution so I could keep a consistent tune without over-richening the ECU fuel maps.
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This may be something else to add to the flash then if possible, that will have to be addressed to the developer on this project.
Quote:
Originally Posted by WarmAndSCSI
Until somebody pushes the envelope a little bit (making at least 400 WHP) I won't be convinced that your ROM hacks actually work. It happens all the time in the Evo world... hell, I threw a rod through the side of my 4B11T because somebody had mis-mapped a boost control table in the EcuFlash ROM definition, causing me to run 40+ psi of boost in the mid-range. These kind of ROM changes aren't "working" in my book until somebody tests them under every condition - and a mild boost setup is far from testing anything to the limits as far as I'm concerned.
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Not many have pushed the power levels to the extent you have, yet. This entire project had to start from somewhere and get things rolling on this flash. Look back a couple years on the 6g74 swaps even, everything started form something and progressed to where they are at today. A lot of people are interested in this flash, and obviously a lot of your fellow Evo owners seem pretty happy with the capabilities of the EcuFlash method of tuning.
If a rod was thrown due to mis-mapping, then the tune and tuner is at fault, the same thing could just as easily have happened to anybody running anything else for tuning. Anybody who did the same thing on the Evo Flashed ECU in the Eclipse or Galant could have easily done the same thing...just part of tuning.