Comprehensive MSS54/MSS54HP DME Information

[Andy2424]

sorry, since my mother tongue is not english, i do not understand the term flashes in the context.

Can someone explain to me what that means? Misfire?

thank you 👍

[TropicalM3]

I have a 2006 M3 MSS54HP and I am replacing my ECU with a used one and I want to clone the used one from my original ECU, can I just do a full read using MSSflasher or BMWFlash and write it into the donor ECU? Would that be enough to start and drive the car?

[E46 Adam]

The 60 flash limit (really 30 flash limit) is artificial and MSSFlasher can clear that. The physical limits are going to be on the order of 10-100k flashes.

alright kinda cool knowing they can take 100000 Flashes, Thanks!

[Slideways]

The 60 flash limit (really 30 flash limit) is artificial and MSSFlasher can clear that. The physical limits are going to be on the order of 10-100k flashes.

Can the flash limit be cleared after it has hit the 30/60 limit?

[terra]

does a DME take 60 flashes max throughout it's whole life even Mssflasher can't reset that 60 flash limit?

The 60 flash limit (really 30 flash limit) is artificial and MSSFlasher can clear that. The physical limits are going to be on the order of 10-100k flashes.

[E46 Adam]

^Just use MSS Flasher to reset the flash counter.

does a DME take 60 flashes max throughout it's whole life even Mssflasher can't reset that 60 flash limit?

[rbg]

Yes you can DIY all of this.

VIN is super easy with Tool32: https://www.ecuworx.co.uk/2016/02/26...f-with-tool32/

You can either code out EWS or sync it to your car.

Yay! Thank you so much for your explanation. I would've googled, but as we all know the best resource for our platform has been reborn :-)

[heinzboehmer]

Ok I see. What about donor ECU begin coded for different VIN, will EWS module need to be coded off, can you DIY it?

Yes you can DIY all of this.

VIN is super easy with Tool32: https://www.ecuworx.co.uk/2016/02/26...f-with-tool32/

You can either code out EWS or sync it to your car.

[rbg]

It can't. You need an HP (or a non-HP converted to HP spec) to run a MAP sensor.

Ok I see. What about donor ECU begin coded for different VIN, will EWS module need to be coded off, can you DIY it?

[heinzboehmer]

Hm... I thought non-HP DME can not run MAP software.

It can't. You need an HP (or a non-HP converted to HP spec) to run a MAP sensor.

[rbg]

Hm... I thought non-HP DME can not run MAP software.

[heinzboehmer]

Yes I am going to do CSL airbox+MAP minus the flap on 6MT. I can source one for a $100 locally, but not sure if it will help for my needs of full conversion.

If you're not going to be running a flap a regular HP will work just fine for the CSL conversion. You can use MSSFlasher (http://www.msstuning.com/mssflasher.html) to flash a modified version of the CSL software onto an unmodified HP. Instructions are on the website.

If you want to convert the DME boot sector as well you're going to need to BDM it.

[rbg]

Depends. Is your end goal to do a CSL conversion on the ECU?

To have Kassel upgrade you non-HP to full CSL would cost $425 + shipping: https://www.kasselperformance.com/pr...re-conversion/

HPs are usually $400-500+ on the secondhand market, but if you want a CSL conversion, you would need to flash the HP DME.

Yes I am going to do CSL airbox+MAP minus the flap on 6MT. I can source one for a $100 locally, but not sure if it will help for my needs of full conversion.

[heinzboehmer]

So is there any advantage of picking up a donor MSS54HP ECU, or it will need to be recoded and will be more paint then convert my non HP to HP? For example https://www.kasselperformance.com/pr...s54-hp-tuning/ provide this serves. I can send them either my non-HP ECU or get HP one from donor, but that will be coded to a different VIN. What would be a better option? Sorry if this is a stupid question.

Depends. Is your end goal to do a CSL conversion on the ECU?

To have Kassel upgrade you non-HP to full CSL would cost $425 + shipping: https://www.kasselperformance.com/pr...re-conversion/

HPs are usually $400-500+ on the secondhand market, but if you want a CSL conversion, you would need to flash the HP DME.

[rbg]

Any M3 built 09/2003 or later should be an acceptable donor then.

So is there any advantage of picking up a donor MSS54HP ECU, or it will need to be recoded and will be more paint then convert my non HP to HP? For example https://www.kasselperformance.com/pr...s54-hp-tuning/ provide this serves. I can send them either my non-HP ECU or get HP one from donor, but that will be coded to a different VIN. What would be a better option? Sorry if this is a stupid question.