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Author Topic: MAFless and ME7.1 again  (Read 115402 times)
nyet
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« Reply #90 on: April 30, 2015, 08:01:18 PM »

Or i guess just override ps_w directly, instead of having it integrate as a result of rl_w.

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_nameless
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« Reply #91 on: May 01, 2015, 04:34:51 AM »

I love baked macaroni and cheese.
Me too.
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Snow Trooper
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« Reply #92 on: May 02, 2015, 01:24:11 PM »

7 pages of awesome

Pro tip, when you make baked mac n cheese, always use tillamook and also fill the pan with about half an inch of whole milk.

I have been making mac n cheese since before ddillinger knew what cheese was. That's a fact.
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prj
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« Reply #93 on: May 03, 2015, 12:21:23 PM »

I'll just say this - one thing is theory, the other one is actually having a practical working solution.

The logic change isn't the issue, and anyone who understands ME7 can figure out how to do this in 5 minutes.
The issue is correct sampling and filtering, as any SD implementation samples the sensor crank/cylinder-sync and applies good jitter correction, to get a steady signal. This is where the majority of effort goes into.

After that it's just calibration. Mainly ESUK, due to the largely unknown fact that a MAP sensor signal is much slower than a MAF in transient conditions.

I have no interest on posting the solution, I've done enough. This time I'll just sit back with the popcorn. I've so far converted 2 other ECU generations to SD besides ME7 and faced all the challenges associated. ME7 is by far the easiest.
« Last Edit: May 03, 2015, 12:23:14 PM by prj » Logged

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SeRiLLo
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« Reply #94 on: May 15, 2015, 07:00:10 AM »

i`m using MAF input as 0-5 voltage input for doing something, but i have no MAF, i have no limp, i have only one MAP before throttle, i have working ESP. Since I cheat the ECU and use a mathematical model to calculate the air, instead of the actual sensor readings. And it`s only few bytes in code changes.
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NOTORIOUS VR
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« Reply #95 on: May 15, 2015, 07:40:35 AM »

I still don't see the obsession to run these ECU's maf-less... it makes no sense what so ever.
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SeRiLLo
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« Reply #96 on: May 15, 2015, 08:15:36 AM »

I still don't see the obsession to run these ECU's maf-less... it makes no sense what so ever.
if you want examples..
engine bay layout, direct intake to turbos with 2 highflowfilters, cold intake without Y, very high maxflow with good 780 idle rpm(big MAF sensitivity is crap)
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NOTORIOUS VR
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« Reply #97 on: May 15, 2015, 10:13:09 AM »

Still doesn't make any sense, as you can always do a blow through setup easily capable of 1000whp without issue.

There really is no good reason to run without a MAF what so ever.
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tjwasiak
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« Reply #98 on: May 15, 2015, 10:15:31 AM »

MAF setups runs much better in daily driven cars as they adapts much better to different air temperature and humidity.
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vwaudiguy
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« Reply #99 on: May 15, 2015, 10:16:34 AM »

Still doesn't make any sense, as you can always do a blow through setup easily capable of 1000whp without issue.

There really is no good reason to run without a MAF what so ever.

What is needed to convert from the standard configuration to blow-through in general?
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NOTORIOUS VR
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« Reply #100 on: May 15, 2015, 10:33:43 AM »

What is needed to convert from the standard configuration to blow-through in general?

I haven't done one yet, but I doubt it would take more then properly calibrating the MAF tables.
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ddillenger
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« Reply #101 on: May 15, 2015, 02:46:51 PM »

What is needed to convert from the standard configuration to blow-through in general?

An HPX MAF and a love for perfectly linear fueling.
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A4Rich
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« Reply #102 on: May 15, 2015, 03:20:37 PM »

An HPX MAF and a love for perfectly linear fueling.

What is the consensus with using an OEM ford (mustang and others) slot sensor instead of an HPX?clicky click
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« Reply #103 on: May 15, 2015, 04:59:51 PM »

Most oem sensors don't get good readings in blow through. Mainly if it has internal temp caps happening, it reports really low air flow because the extreme heat.
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tjwasiak
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« Reply #104 on: May 16, 2015, 07:27:56 AM »

And what is wrong with such readings? IMHO it reads real values as MAF should compensate for air temperature internally (by hardware). Perhaps one should try to install such MAF post intercooler to have more meaningful airflow values.
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