MSS54 and MSS54HP EWS Syncing or Delete

[IBrokeItPleaseFix]

This is my first post, but if anyone can help me that be great! I plan on putting in a CSL intake along with a MAP sensor. For the MAP sensor I sent out a spare ECU to Kassel Performance to convert to MSS54HP and then into a CSL ECU. I have my OEM ECU that I plan on swapping every 2 years in order to pass SMOG in California. I know that every time I switch the ECU's I will need to resync for initial startup or I could go the EWS delete route.

My main question is what software and hardware do I need to perform an EWS sync or delete? Sorry if this is common knowledge, but I'm pretty new and wanna learn.

[bmwfnatic]

EWS sync should be done via INPA.

You can EWS delete your binary quite easily, set 0x8A to 1.

[D-O]

Another option for EWS delete is the Ecuworx binary modification tool.

[bavarian3]

https://www.ecuworx.co.uk/downloads/

[IBrokeItPleaseFix]

So I look at the great software suggestions you guys posted and realized I’d need a way to run it. Would a K+CAN cable line this and a laptop be enough?

[D-O]

So I look at the great software suggestions you guys posted and realized I’d need a way to run it. Would a K+CAN cable line this and a laptop be enough?

Cable might be okay....not a huge risk for $28

There is plenty of talk about cable quality being important. I believe the Bimmergeeks K+DCAN cable is the gold standard, but their site shows all cables out of stock at this time.

[IBrokeItPleaseFix]

Hi so I'm coming back to this thread since it has been awhile since I was able to modify the car. In reality the car was suffering stalling issues due to some bad sensors and fuel injectors so I didn't want to put the CSL intake while the car was suffering from just running stock. Now that I'm back here's what I've done since I last posted. In between my last post I have replaced spark plugs, ignition coils, both cam position sensors, camshaft position sensors, fuel pump, fuel pump relay, and then finally had my fuel injectors rebuilt by RC Fuel Injection.

So why does this matter? Well after I replaced the fuel injectors and drove the car daily for about a week I felt confident enough to put the CSL intake with the MAP sensor. After installing the intake, the MAP sensor, and a modified DME (MSS54 -> MSS54HP -> CSL Clone) I deleted the EWS just as everyone here suggested by using an INPA cable and a hex editor. Specifically I extracted a partial .bin from the DME and changed "64 00 5a 00 00" to "64 01 5a 00". This actually worked for a little bit. I ran the car for a day or two happy with the CSL intake, MAP sensor, and modified DME. However recently the car stalled out on the drive back home.

My issue now is that the car runs pretty rich and rough. I used the hex editor to alter the VANOS offset 0x182 (changing "00 1E" to "FF EC") which should have fixed my running rich issues by reverting back to a stock cam tune. Even after this change I still am stalling on short drives and flooding the engine due to running rich. Currently my INPA is showing that I am having misfires in cylinder 1 and cylinder 2. Additionally INPA is also claiming an EWS signal manipulation. I also noticed that my IAT sensor does appear to malfunction by reading 0 degrees F on startup (maybe this is my real issue?). I'm running into a wall on what I should do and would appreciate some suggestions.

[sapote]

My issue now is that the car runs pretty rich and rough. I used the hex editor to alter the VANOS offset 0x182 (changing "00 1E" to "FF EC") which should have fixed my running rich issues by reverting back to a stock cam tune. Even after this change I still am stalling on short drives and flooding the engine due to running rich. Currently my INPA is showing that I am having misfires in cylinder 1 and cylinder 2. Additionally INPA is also claiming an EWS signal manipulation. I also noticed that my IAT sensor does appear to malfunction by reading 0 degrees F on startup (maybe this is my real issue?). I'm running into a wall on what I should do and would appreciate some suggestions.

EWS status has nothing to do with bad mixture/stalling.

Use OBDFusion to get a log file (.csv file) with hot engine idling, with these parameters: rpm, engine temp, all 4 O2 sensors, MAF in g/s, all 4 fuel trims. Upload the csv file on datazap.net for the graphs from data, then post your datazap link here so we can check it out of what's wrong.