Comprehensive MSS54/MSS54HP DME Information

[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.

[terra]

I am just planing to shop around to see if I can source later version at local partouts, as my sausage fingers and blind eyes are gettin too lazy to deal with SMD components :-)

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

[rbg]

I am just planing to shop around to see if I can source later version at local partouts, as my sausage fingers and blind eyes are gettin too lazy to deal with SMD components :-)

[heinzboehmer]

Is there any hardware difference in DMEs between coupe, vert MT vs SMG?

Nope. Hardware differences are only related to year (HP vs non-HP). Firmware is different though.

[rbg]

Is there any hardware difference in DMEs between coupe, vert MT vs SMG?

[R3Z3N]

^Just use MSS Flasher to reset the flash counter.

[chicane]

Outstanding writeup. Is there a step by step on the AIF counter reset?