thefoeyouknow
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« on: February 04, 2016, 01:19:19 PM »
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I've read s4wiki, but I'm having difficulty applying that to my AWD 1.8t with a CM. The only xdf I've found for the CM is fairly basic. I've just finished breaking in my engine after rebuild, and I'm looking to tune the boost higher, to about 1 bar. I've found LDRXN, and this xdf shows it in mbar and PSI. I can't believe it would be that simple, so how deep do I have to get into this thing to get there and keep it happy? My previous tuning experience is on Ford EEC-IV, and THAT is a whole different animal, so I'm basically on square 1. Help me learn to speak this thing's language.
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nyet
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« Reply #1 on: February 04, 2016, 01:55:05 PM »
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I've found LDRXN, and this xdf shows it in mbar and PSI.
It isn't that simple, and the s4wiki tuning page explains why. 1) get some forced induction background education 2) read up on load based engine management 3) read the s4 tuning wiki page again.. it IS your starting point. |
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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thefoeyouknow
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« Reply #2 on: February 05, 2016, 07:17:26 AM »
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The problem I have with s4wiki, is that many of the parameters such as kfmiop are not present in my xdf, which leaves me unsure of what is important and what isn't. As far as my research has lead me to believe, the xdf I'm using (found here) is the only one out there. Maybe I'll post to see if someone can build me a more complete file based on 06A 906 032 CM. I'll go over s4wiki more, and I'll learn more about load based management, but as far as I have found to this point, this is the best place to do that for my purposes, so "read up on load based engine management", and "get some forced induction background education" seems like dismissive advice. While I respect your advice, I was hoping for something more helpful, especially from someone with so much good advice to give.
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adam-
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« Reply #3 on: February 05, 2016, 08:10:50 AM »
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You can't really summerise everything that's been documented in this forum in a few lines though. It's a complicated management that has taken me quite some time to get my head around, and even at this stage (over a year and a half of constantly reading on here, I'm still a noob). I've got A4 notepads filled with scribbles, notes and bits of info from all the major contributors here.
Basically, you need to get all the load based maps defined, as well as the fuelling and timing ones. That will help you get going. Use the Wiki for their names and attempt to define them yourself. If you're struggling, ask and we'll help.
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nyet
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« Reply #4 on: February 05, 2016, 01:05:37 PM »
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It is like asking for a "quick idiot's guide to quantum electrodynamics".
There is no such thing.
You at LEAST need a bit of background in both physics and math.
Start with learning what load is, then try to figure out what the ECU is trying to do.
It tries to translate your accel pedal position into timing, boost, fueling.
accel pedal translates in to a requested load.
The MAF signal translates into the current actual load (to tell the ECU what operating region the motor is currently in).
Boost is controlled by a PID, which takes req and actual boost as an input, and translates it into wg dc.
Everything else comes as a result of those.
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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thefoeyouknow
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« Reply #5 on: February 07, 2016, 01:59:48 PM »
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Thanks for that, but I'm not THAT new. I'm still struggling with a very incomplete .XDF. I've been looking into other concepts and applications, I have a pulled .bin, and I have the .dam (which is really almost useless, as it's in German). I'm very familiar with EEC (Ford) computers and how they strategize their operation, as well as how to make them do lots of other things in lots of other ways. Tuning boost is new to me, but what's most difficult for me here is a lack of good definitions, and from what I can see, an ECM that is almost exclusively table based. The latter I can adapt to, but the former is a major stumbling block. I feel like if I had a good xdf, I wouldn't need to be bothering anybody. The only really big question I have, is: with a stock engine, to raise boost (within reason), will I have to screw with fueling and spark, or does the ECM have room in the stock tables to deal with it on its own. If the stock tables can't cope, I'll have to work my way through. I'd rather not have to find out the expensive way, as I'm quite over looking at the insides of my engine. If you can help with that question, I can probably just be on my way.
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adam-
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« Reply #6 on: February 07, 2016, 04:52:47 PM »
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How much power are you looking for?
I like things rich because I don't want to risk melting things. I'd enrich LAMFA a little bit and verify it's working with logs. Get it around 12.4 at peak torque and richer at the redline. With that, raise boost (use RXN to lift it a little), providing IRL and IOP support the new load. You now have more boost.
Check knock and fuelling and make sure they're good. If you have knock, remove timing with KFZW(2) until none. Watch EGT.
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nyet
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« Reply #7 on: February 07, 2016, 05:59:31 PM »
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Then study a well defined xdf for a different bin along side the fr
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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ddillenger
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« Reply #8 on: February 07, 2016, 06:38:27 PM »
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Then study a well defined xdf for a different bin along side the fr
It's even easier. The community threads are literally nothing but posts, each containing cause and effect. |
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
Email/Google chat:
DDillenger84(at)gmail(dot)com
Email>PM
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thefoeyouknow
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« Reply #9 on: February 07, 2016, 09:27:20 PM »
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How much power are you looking for?
I like things rich because I don't want to risk melting things. I'd enrich LAMFA a little bit and verify it's working with logs. Get it around 12.4 at peak torque and richer at the redline. With that, raise boost (use RXN to lift it a little), providing IRL and IOP support the new load. You now have more boost.
Check knock and fuelling and make sure they're good. If you have knock, remove timing with KFZW(2) until none. Watch EGT.
Ideally 1 bar. I've got head studs, but I'm not looking to build a race car, or go fast (relative to my other car). I just want the car to be more fun. |
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nyet
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« Reply #10 on: February 07, 2016, 09:29:08 PM »
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It's even easier. The community threads are literally nothing but posts, each containing cause and effect.
this too |
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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thefoeyouknow
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« Reply #11 on: February 08, 2016, 02:32:57 AM »
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Then study a well defined xdf for a different bin along side the fr
I watched a very helpful video about using a well defined xdf and BC3 to expand my own xdf. I may make that my next sub-project. |
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nyet
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« Reply #12 on: February 08, 2016, 11:41:56 AM »
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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thefoeyouknow
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« Reply #13 on: February 09, 2016, 07:16:15 AM »
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That's actually very helpful. Thank you. I don't know why I didn't find that when I was searching, but I'm going to integrate the stage 1 thread as a guideline, and I've been having luck using winols to find map info for expanding my xdf. I'll throw up a first draft tune in a couple days that maybe I can get some advice on. I wish there was a tool for translating a .dam into .xdf, even indirectly.
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