FORscan for the RX8

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Re: FORscan for the RX8

Post by Honkytonk » Sun Oct 13, 2019 10:52 pm

No worries Paul, I feel the same way about being defeated (At least by software...)

I would bet money on it being an OBD2 adapter problem, as I've had intermittent issues with my Bluetooth one dropping connections etc., or it could be the adapter can't pass the data quickly or fully enough for the expected bitrate from the software.

Hope the 3 year old gets better soon!
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Re: FORscan for the RX8

Post by Paul_13 » Fri Oct 18, 2019 7:42 am

Soo... Forscan has sent me a test version of the software to try and get around the "service procedure interrupted" issue. Still no joy. They're reviewing another log of mine and will hopefully get back to me later.

One thing that has become apparently is that not all of the functions were present in the Forscan version you download off the website. In my test version, the PCM ASBUILT data is now included in the programming function (along with a few other bits)

So hopefully when my issue is resolved, they will release a new revision with a few more features!
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Re: FORscan for the RX8

Post by Paul_13 » Fri Oct 18, 2019 7:51 pm

Well I had a response from Forscan:
Hello,

For some reason, this PCM refuses security access procedure FORScan uses to unlock the PCM for writing. This is extremely weird because procedure is correct and worked before on another MZ RX8, same engine and year but older firmware. We have checked everything and even tried to do some modifications (ones you tested with no luck).

The only explanation we have is that the new PCM is not stock one (has modified firmware), so stock security access doesn't work.

Regards,
FORScan Team


The only thing I can think of is mazda edit has buggered things up... JamieM created a program to enable cruise control. He claimed to of known the mazda edit secret key. Might give that a go and see if that will reveal anything. Obviously not activate cruise control

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Re: FORscan for the RX8

Post by warpc0il » Fri Oct 18, 2019 10:46 pm

Had your PCM had a previous mini-map?

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Re: FORscan for the RX8

Post by Paul_13 » Fri Oct 18, 2019 10:48 pm

warpc0il wrote:
Fri Oct 18, 2019 10:46 pm
Had your PCM had a previous mini-map?

Sent from my SM-G800F using Tapatalk
Not sure what a mini map is. But my PCM has mazda edit installed

I've repeatedly said to Forscan that the car has had mazda edit installed.

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Re: FORscan for the RX8

Post by Vj4sothername » Fri Oct 18, 2019 11:04 pm

It couldn't recognise my 231 when I tried earlier. I have noticed that my odb adapter causes a network error if I start the car with it connected so fingers crossed that's why. More testing required perhaps with my other dongle.
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Re: FORscan for the RX8

Post by Paul_13 » Sat Oct 19, 2019 9:02 am

Had another reply from Forscan....

FORScan has necessary seed/keys algorithms for Mazda, if part of firmwre responsible for seed/key was modified by MazdaEdit, then we cannot help. We are not familiar with MazdaEdit so don't know if/how it can do it.

Regards,
FORScan Team

Is JamieM on here? He seemed to of cracked the mazdaedit seed key

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Re: FORscan for the RX8

Post by Honkytonk » Sat Oct 19, 2019 9:32 am

Paul_13 wrote:
Sat Oct 19, 2019 9:02 am
Had another reply from Forscan....

FORScan has necessary seed/keys algorithms for Mazda, if part of firmwre responsible for seed/key was modified by MazdaEdit, then we cannot help. We are not familiar with MazdaEdit so don't know if/how it can do it.

Regards,
FORScan Team

Is JamieM on here? He seemed to of cracked the mazdaedit seed key
It might be worth dropping him a PM, he used to be active over on the FORscan forum as well. I can understand actually if MazdaEdit has locked that bit off, I suppose it's an ECU reflash tool so the car is essentially 'tuned' and the seed keys will have changed to different than stock, which FORscan will use.
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Re: FORscan for the RX8

Post by Paul_13 » Sat Oct 19, 2019 9:34 am

Honkytonk wrote:
Sat Oct 19, 2019 9:32 am
Paul_13 wrote:
Sat Oct 19, 2019 9:02 am
Had another reply from Forscan....

FORScan has necessary seed/keys algorithms for Mazda, if part of firmwre responsible for seed/key was modified by MazdaEdit, then we cannot help. We are not familiar with MazdaEdit so don't know if/how it can do it.

Regards,
FORScan Team

Is JamieM on here? He seemed to of cracked the mazdaedit seed key
It might be worth dropping him a PM, he used to be active over on the FORscan forum as well. I can understand actually if MazdaEdit has locked that bit off, I suppose it's an ECU reflash tool so the car is essentially 'tuned' and the seed keys will have changed to different than stock, which FORscan will use.
Just pm'd him :thumleft:

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Re: FORscan for the RX8

Post by Honkytonk » Sun Oct 20, 2019 9:12 am

Vj4sothername wrote:
Fri Oct 18, 2019 11:04 pm
It couldn't recognise my 231 when I tried earlier. I have noticed that my odb adapter causes a network error if I start the car with it connected so fingers crossed that's why. More testing required perhaps with my other dongle.
I missed this the other day, sorry - I found during testing that if I had a failed connection it was best to unplug the obd adapter, close FORscan, then plug the obd back in and restart the application. The clone adapters don't like changing power states it seems.
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Re: FORscan for the RX8

Post by Vj4sothername » Sun Oct 20, 2019 10:24 am


Honkytonk wrote:
I missed this the other day, sorry - I found during testing that if I had a failed connection it was best to unplug the obd adapter, close FORscan, then plug the obd back in and restart the application. The clone adapters don't like changing power states it seems.
It's all hooked up and working using the old beast adaptor. The car really hates the slim blue one I have. Now to figure out how to disable the coolant warning light!
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Re: FORscan for the RX8

Post by Paul_13 » Sun Oct 20, 2019 11:07 am

Vj4sothername wrote:
Sun Oct 20, 2019 10:24 am
Honkytonk wrote:
I missed this the other day, sorry - I found during testing that if I had a failed connection it was best to unplug the obd adapter, close FORscan, then plug the obd back in and restart the application. The clone adapters don't like changing power states it seems.
It's all hooked up and working using the old beast adaptor. The car really hates the slim blue one I have. Now to figure out how to disable the coolant warning light!
You can't disable it with forscan.
Disconnect the level sensor. It's the only way apart from buying a replacement header tank
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Re: FORscan for the RX8

Post by warpc0il » Sun Oct 20, 2019 11:46 am

:whathesaid; there's no connection between the coolant sensor and the PCM, which is just as well given how the float forgets how to float.
viewtopic.php?f=25&t=70464
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Re: FORscan for the RX8

Post by Vj4sothername » Sun Oct 20, 2019 11:52 am

Thanks guys. I've unplugged it for now. I'll add it to the list of things to buy.

I have to keep on top of these things as my partner gets freaked out as soon as they happen. I managed to stealth clear the O2 sensor cel while driving yesterday.

She doesn't trust the car and it's hard to build the trust with warning lights on. Fingers crossed the O2 issue will be fixed next weekend with a replacement gasket.

Maybe then she'll be happier in it.
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Re: FORscan for the RX8

Post by Paul_13 » Sat Nov 02, 2019 9:35 am

Made a bit of progress, kind of...
I emailed mazdaedit about the secret key and they replied saying just flash the standard ROM back on and I will be able to change the tyre size on the PCM. I guess I'll have to flash the Mazdaedit version back on after.

I did email Jamie M but he would reveal the mazdaedit secret. I have read up about trying to hack the ecu but it's all way above my skill set currently and having a newborn + sleep deprivation = non functioning brain
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Re: FORscan for the RX8

Post by Paul_13 » Sat Nov 02, 2019 9:15 pm

Testing the water.png
Victory!.png
Winnings!

Flashing the standard ROM file on worked. Even managed to reset the PCM.

This is a sigh of relief as I'll be able to program keys etc.

I have loaded up the Mazdaedit file on so fingers crossed all is well.
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Re: FORscan for the RX8

Post by Honkytonk » Sat Nov 02, 2019 10:01 pm

Congrats Paul!
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Re: FORscan for the RX8

Post by Paul_13 » Sat Nov 02, 2019 10:13 pm

Hopefully that resolves the speedo over reading issue and also the dsc plays up. The ABS wheel speed sensors do not match the pcm speed on the obd reader

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Re: FORscan for the RX8

Post by Paul_13 » Sat Nov 09, 2019 5:44 pm

Forscan has released an update. You can now edit as built data on the ecu - useful for cruise control
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Re: FORscan for the RX8

Post by Paul_13 » Sat Nov 09, 2019 5:47 pm

Paul_13 wrote:
Sat Nov 02, 2019 10:13 pm
Hopefully that resolves the speedo over reading issue and also the dsc plays up. The ABS wheel speed sensors do not match the pcm speed on the obd reader
Well my speedo is much more accurate. The abs wheel speed readings differ by 1 mph now instead of 3-5 mph.

Still having the issue of the DSC kicking in on sharp right hand turns. Need to check the alignment and EPS steering angle

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Re: FORscan for the RX8

Post by warpc0il » Sat Nov 09, 2019 6:01 pm

Where do you have the yaw sensor mounted?
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Re: FORscan for the RX8

Post by Paul_13 » Sat Nov 09, 2019 6:41 pm

warpc0il wrote:
Sat Nov 09, 2019 6:01 pm
Where do you have the yaw sensor mounted?
Same place as rx8. On gearbox tunnel

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Re: FORscan for the RX8

Post by PeteH » Sun Nov 10, 2019 10:26 am

The DSC maths will use the steering ratio, the car's wheelbase and track width, and car speed, to work out if the car is under steering or over steering. The most important of these will be the steering ratio. If the MX5 has a different rack, with a different overall steering ratio, then the DSC module is going to get its sums wrong, and tight turns will make it confused.

I suspect the key settings are hard coded in the DSC module, but if you can find a configurable value for steering ratio (and wheelbase) the you should alter them to your MX5 values.

You'll need to know the overall steering ratio (not just the rack ratio). If you need a hand finding that for your car then drop me a pm.
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Re: FORscan for the RX8

Post by Paul_13 » Sun Nov 10, 2019 11:22 am

PeteH wrote:
Sun Nov 10, 2019 10:26 am
The DSC maths will use the steering ratio, the car's wheelbase and track width, and car speed, to work out if the car is under steering or over steering. The most important of these will be the steering ratio. If the MX5 has a different rack, with a different overall steering ratio, then the DSC module is going to get its sums wrong, and tight turns will make it confused.

I suspect the key settings are hard coded in the DSC module, but if you can find a configurable value for steering ratio (and wheelbase) the you should alter them to your MX5 values.

You'll need to know the overall steering ratio (not just the rack ratio). If you need a hand finding that for your car then drop me a pm.
Thanks for the reply.
I'm using the rx8 rack.
Doing a bit of investigation today so will report back.

I think my alignment is off and my steering angle is showing 7.00 when driving in a straight line

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Re: FORscan for the RX8

Post by Paul_13 » Sun Nov 10, 2019 1:59 pm

Think I've figured it out... I have a Cheapo after market steering wheel boss and the slots for the clock ring are offset to the steering wheel slightly.

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