DIY tuning/remapping with mazdaEdit and Openport

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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by zippyonline » Thu Oct 19, 2017 8:29 pm

Slightly off topic, but I have a couple of mazdaedit questions, so this seems most appropriate place to ask.

1. What vehicles can the software read/write? Is there a list somewhere?

2. Can the software access the map for the eps? (I assume it has an assistance map!?)
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by 13Black » Thu Oct 19, 2017 8:36 pm

1. Quite a few Mazdas, have one in mind and I can check?

2. Negative.
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by zippyonline » Thu Oct 19, 2017 8:51 pm

13Black wrote:
Thu Oct 19, 2017 8:36 pm
1. Quite a few Mazdas, have one in mind and I can check?
Mazda 3 BM, 2litre skyactiv. But it was with the steering in mind coz it's super light and er horrible! It has had a BBR remap though, so I dunno if the ecu is then unreadable like it is after a mazdaedit flash.
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by warpc0il » Thu Oct 19, 2017 8:56 pm

Over-light steering is usually a geometry issue. What have you got yours set to?
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by zippyonline » Thu Oct 19, 2017 9:11 pm

It's not mine, but anyway!
It's on stock geo, but in fairness, it just feels overlight like all eps systems I've driven in modern bland white goods cars (new focus, fiesta, Hyundai etc. Etc. You know, cars that just get you a to b!).
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by wiggles » Thu Oct 19, 2017 9:19 pm

zippyonline wrote:
Thu Oct 19, 2017 9:11 pm
It's not mine, but anyway!
It's on stock geo, but in fairness, it just feels overlight like all eps systems I've driven in modern bland white goods cars (new focus, fiesta, Hyundai etc. Etc. You know, cars that just get you a to b!).
I borrowed my dads civic the other day for the first time and nearly tied my arms in a knot at the first corner there is just no feedback/resistance in the wheel at all :shock: felt better when you pushed on a bit though :race:
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by warpc0il » Thu Oct 19, 2017 9:26 pm

Some shopping trolley hatchbacks, like the Fiesta, allow you to select the steering assistance level via the dash console eg. City mode vs Normal.

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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by zippyonline » Thu Oct 19, 2017 9:40 pm

Yeah, we were hoping Mazda edit might be able to do something with it as there's none of that on the on board computers.
Guess it's just what modern bland cars are...
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by PeteH » Thu Oct 19, 2017 10:02 pm

Fit some fat tyres, let the pressure down by a few psi, and adjust your castor to max (if you can). That should do it!

Presumably you could also manually hack it by putting a huge resistor in the circuit (a huge one, like an arc welder or something...)

Or disconnect the eps supply. That'll stiffen it up.

Am I helping?

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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by 13Black » Thu Oct 19, 2017 10:20 pm

PeteH wrote:
Thu Oct 19, 2017 10:02 pm
Presumably you could also manually hack it by putting a huge resistor in the circuit (a huge one, like an arc welder or something...)

emmet_filmstill4_zpsdbfa40c2.jpg
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by warpc0il » Thu Oct 19, 2017 10:24 pm

but Resistance is Futile...
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by 13Black » Thu Oct 19, 2017 10:26 pm

Wrong film ffs
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by warpc0il » Thu Oct 19, 2017 10:27 pm

I'm franchise agnostic me ;)
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by Rotary Potato » Thu Oct 19, 2017 10:28 pm

"If you're listening to this, then you are the resistance"
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by kiwigaz » Fri Oct 20, 2017 7:40 am

The piece of resistance! But I do have three kids under 8 so I should really know that.

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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by joney » Fri Oct 20, 2017 7:53 am

It's ok the truth is out there
The truth being everything is awesome as long as your in an 8
If its not broke I'm sure I can find a reason to take it apart :thumright:
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by wiggles » Fri Oct 20, 2017 9:34 am

warpc0il wrote:
Thu Oct 19, 2017 9:26 pm
Some shopping trolley hatchbacks, like the Fiesta, allow you to select the steering assistance level via the dash console eg. City mode vs Normal.

Sent from my SM-G800F using Tapatalk
IIRC a colleague had a Skoda that the steering was an optional extra "city steering" aka super light that probably cost the original buyer a chunk when new. It was just a map that made the difference so had it taken off and said it was way better
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by Harrizone » Fri Oct 20, 2017 11:58 am

Just replace the steering wheel with something about 8 inches diameter. Problem solved. :lol:
Now a distant memory unfortunately.

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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by Scartlead » Fri Oct 20, 2017 1:25 pm

13Black wrote:
Thu Oct 19, 2017 10:20 pm
PeteH wrote:
Thu Oct 19, 2017 10:02 pm
Presumably you could also manually hack it by putting a huge resistor in the circuit (a huge one, like an arc welder or something...)


emmet_filmstill4_zpsdbfa40c2.jpg

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probably not related, but superglue has a whole new meaning :)
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by Dr. FrankenRex » Fri Oct 20, 2017 2:50 pm

Harrizone wrote:
Fri Oct 20, 2017 11:58 am
Just replace the steering wheel with something about 8 inches diameter. Problem solved. :lol:
Or go the other way for the lulz
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by Ryan Rotary Performance » Mon Nov 06, 2017 2:26 pm

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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by 13Black » Sun Nov 11, 2018 11:33 pm

For anyone who doesn't have any software but fancies playing with the numbers, here are some of the more interesting maps.

Included are base S1 and R3 maps from 231 cars, as well as the difference between them, if any.

Any questions, give me a shout.

S1 and R3 ME Maps.xlsx
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by 13Black » Mon Jan 21, 2019 9:13 pm

So I was doing a wonder - as I sometimes do when I should be doing other things, or pooping at work. During one of these wonders, the topic of various makes of D585 coils sprang to mind and some of the 'premature' failures people experience.

It seems that lifetime warranty is quite a useful thing to have given how hit and miss they seem to be sometimes - remember folks, lifetime warranty doesn't mean the ones you buy will last forever! Always worth checking them once a year in my opinion!
I'm sure failures are in the minority - with so many sets sold, you can't have all of them working flawlessly for tens of thousands of miles.

Now, with regards to Dwell. The default Mazda map gives them roughly a 2.0 millisecond dwell which is capped at 25% duty cycle up the spicy end.
D585s windings being designed for longer dwell times, it's common to remap the dwell table to accommodate this to ensure the coils are making as much energy as they safely can - the biggest change being up top where they're being pushed at roughly 50% duty cycle, quite happily it seems(/seemed).

I stumbled on this site ( http://www.mojoperf.com/node/5 ) which seems to claim that the above dwell adjustments fall in line with what was previously thought to be (and probably was) safe for AC Delco D585s, with some pushing them into the 5.0 -> 6.0 ms dwell times with good results.

However, note the mention that a change in production saw them being sourced from China (not always a bad thing, mind you) from 2014 onwards, which seemed to mark a decline in build quality whereby more units were unable to happily be pushed by their dwell table - with 3.4 ms (apparently) being claimed to be the new 'safe' max.

I ran the numbers on this and drew up a map to see what kind of change that would represent - with idle still being above this 'new safe max' (same as previous map by Phil Bate) but at a measly 7% duty cycle, so probably not stressing them too much, I guess (I wouldn't really know) - but with the dwell swifly coming back down to the 3.4 ms point (instead of ~ 4.2 ms as per Phil's map) until steadily tapering off at the top end for when I exceed the stock rev limiter (this happens often) and the PCM extrapolates further down, as to not pin the dwell time at a steady figure and run the duty cycle up past 50%.



The graph below plots each of the 3 maps at the normal 'running voltage' of 14 volts to demonstrate what I'm talking about.

The dwell map also attached is what I've recently flashed onto my own car to test - bearing in mind I currently have a trailing coil out and an iffy Baro sensor, and I'm an idiot - but it still seems happy enough starting and driving. That is no reason to flash it to your own car though, so the usual caveats apply. It's more for reference.
For example: I should probably level the cells for 1000 and 2000 rpm at the cranking voltage zone as to not ramp them too high during starting, similar to what Phil has done (I assume that's why he's made it the way he has).


Let minnow what y'all think. Nothing against D585s or Phil's dwell map by the way - that forum post could very possibly be a load of rubbish - I think the only person here with the readily available means to test it would be Phil himself. Also note that each manufacturer of D585 coil kits for RX-8s likely get theirs built by different manufacturers to their own specs - how this would alleviate this issue that may not even exist, who knows.

All dwell at 14V - Graph.png
D585 - Safer maybe.png
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by Phil Bate » Tue Jan 22, 2019 6:10 pm

Well wondered Nick - did I not post my revised calculator? :-k

I've been using the attached file for quite some time now. It allows you to specify the base dwell and voltage, and max. duty cycle supplied by the coil manufacturer and calculates some recommended values automatically. I also included the ability to paste in the calc. load max table (depending on 192/231 and any power tuning) which allows you to weight the dwell according to the torque profile of the engine. This is more for track/race cars that are run at WOT most of the time when you want to eek every last drop from the coils where it counts but not have them sizzling away unnecessarily, and you can choose where in the table it cuts off.


I found early on that the old school large dwell values in the low voltage/low RPM areas could have been causing the D585s to auto-discharge during cranking if they have the built in protection circuitry, possibly exaggerating the longer start times.


Parameters are entered in the yellow cells on the first sheet, and the resulting base values are shown in the top table. The bottom table gives you the full voltage spread in m/sec (for human contemplation) and the second sheet gives you the values to paste in to MazdaEdit. Have a play and see what you think :)
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Re: DIY tuning/remapping with mazdaEdit and Openport

Post by 13Black » Tue Jan 22, 2019 6:53 pm

Now then mister Phil, I don't believe you've uploaded that before!

I hope that this highly ungentlemanly habit of keeping your spreadsheets to yourself isn't something that we'll have to get used to, young man! ;) I shall have a play, cheers.


And while you're here, just a reminder than I have a couple of different makes of D585s and "OEM-quality" coils you're welcome to haz for testing if you ever get round to lighting your scope up again for RRP Mk2 testing etc.
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