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02-10-2017, 08:12 PM | #1 |
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[EPS Coding] Two New Variants Found: F80/F82/F83_rep & F87CS
[original title: "EPS Coding: Is it true?"]
I've had several customers tell me they can't find anyone else who does EPS conversions to GTS [edit: the following parenthetical is INCORRECT for v 60.1](/M2, which share the same parameters so it seems). [<= WRONG FOR NEWER SOFTWARE sometime beyond 58.3] I've also had reports (one as a response to my earlier post) that doing so could be catastrophic. None of the many I've done have resulted in catastrophe, thankfully, just a tighter-feeling car near-/at center wheel position, and of course a lot of very positive feedback from those whom I've converted. Why the aversion, if there is an aversion, among "more established" coders? Last edited by packetpilot; 02-11-2017 at 04:30 AM.. |
02-10-2017, 08:16 PM | #2 | ||
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Here's some more info that I spitballed with a friend.
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02-10-2017, 11:00 PM | #3 |
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I'm not really sure what they mean by more direct steering "ratio". That would be a hardware change if they really changed the ratio of the rack. To me it just sounds like maybe a marketing person got their words wrong. Does ZCP have a different setting than civic? I kind of don't think so.
I did the EPS coding, minus the signature part. It feels better to me. |
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02-10-2017, 11:15 PM | #4 | |
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I've only ever done it via VO coding so haven't actually futzed with actual coding parameters, to 'stay safe' ...but now I have a feeling I'm going to get a bit more daring. Hopefully I'll have more input surrounding whether Civic => ZCP => GTS each have their own deltas, or if it's Civic => ZCP==GTS. Same with GHAS. Homework. ;-) |
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02-10-2017, 11:17 PM | #5 |
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Maybe I should ask M2/GTS drivers to let me make their steering shittier for a day. Maybe that's the ticket to really get an idea of how damping/input is changed, short of actual science. I have a feeling noticing when things get worse is easier than when things improve.
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02-10-2017, 11:25 PM | #6 | |
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You shouldn't be afraid of changing the parameter. There are tools which you seem to have that will tell you what would change if you VO coded. It's the same thing if you make the change yourself. |
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02-11-2017, 01:16 AM | #7 |
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Civic and ZCP are indeed the same with 16_11_502 and 0715 build date.
GTS changes the variant and signature. There's also a couple variants I hadn't noticed before: F80/F82/F83_rep (repaired?) F87CS Hmm... Also: I was apparently confused about the M2 sharing the GTS settings. Might've been confusion with another ECU[incorrect], or maybe it's because my car is in a newer I-STEP than the many recent targets I've had [<= correct]. Last edited by packetpilot; 02-11-2017 at 04:43 AM.. |
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02-11-2017, 03:47 AM | #8 | |
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Where did you see F87CS? Could be something new in a newer data. I'm on 58.3. Edit: Seems I set mine to F87, which matched your F87 / GTS werte of 04. Last edited by terahertz; 02-11-2017 at 04:16 AM.. |
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02-11-2017, 04:28 AM | #9 | |
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They're in Variantencodierung_Normal, the new fields. I failed to capture a screenshot, and can't right now due to bedtime. Sometime soon I should be able to, unless someone beats me to it. This is why I VO code--it's the inbuilt 'cheat code' mechanism after all (albeit a sledgehammer sometimes that warrants honing). Opening post has been updated with version logic disclaimer. |
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02-11-2017, 04:31 AM | #10 | |
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People had the same issues with ZCP coding back then. Had to update the car to at least 58.0. I don't know what would have happened if you VO coded it. I assume it wouldn't actually change anything since if you forced the values anyways it caused errors. I tried coding ZCP VDC back then before I updated to 58.3 and the VDC module was stuck on full stiff with a chassis error. ISTA couldn't fix it. I'm guessing maybe the FA would be invalid too, since the model type and/or salapa things didn't exist yet. If you can't activate the FA, you can't VO code, or code at all. |
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02-11-2017, 04:41 AM | #13 |
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02-11-2017, 11:08 AM | #15 |
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02-11-2017, 11:11 AM | #16 |
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I get that, but what I was trying to convey is more along the lines of the reason why I hadn't realized until last night that there have been two unnoticed variants sitting there for months (when I last updated my I-STEP).
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02-11-2017, 04:40 PM | #18 | |
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Feedback from a ZCP customer who went to GTS EPS (58.3):
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02-11-2017, 04:41 PM | #19 |
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My own feedback going from GTS on 60.1 to F87CS:
Spent two hours driving, mostly highway. Changes seem for now (without any spirited driving whatsoever) to be around weight/resistance. The F87CS settings seem to be a notch lighter, between sport and comfort modes anyway. Hardly spent more than 30sec in sport+ steering mode. |
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03-14-2017, 03:08 PM | #20 |
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A data point (wait, should it be datum point? nah that sounds silly) uncovered yesterday:
Working on a 2017 ZCP, and converting EPS to F82GTS didn't bring about much of a change. "Noticeable, but negligible" are the exact words from the owner. Changing from F82GTS to F87CS brought about a much more noticeable change. To reiterate what was stated earlier, ZCP cars already seem to have the 'dead spot near center' eliminated, or at least the MY2017 cars. |
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07-27-2017, 05:34 PM | #21 |
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I coded F87CS on my F87 M2 and there's a noticeable difference, not sure if it's for the better or not, but the steering feels "tighter" as if the on-center feel is more accurate. has a little bit more feedback too, it could also be placebo as well.
Will try F82GTS on the M2 to see if there's any difference, as well as update to the latest ISTEP.
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