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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 12-03-2014, 03:42 PM   #1
TRITONAL
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MS45.1 - SAP Delete?

I've searched and searched, but have found very little information on this, or people saying it is very hard to do. I have the unfriendly MS45.1 (). Should I just give up, and shell out the $300 for a damn SAP? Mine died, I'm throwing codes, and would much rather code it out than buy a new, useless pump. I haven't found any information on coding out the SAP for the MS45.1. Has anyone successfully done this?

There goes my hopes and dreams up EU2, but more the reason to buy an M3
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Old 12-03-2014, 05:10 PM   #2
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call epic motorsports have randy get you a tune for a SAP delete + headers, buy the block off plate and gasket install. flash ecu, drink beers cheers
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Old 12-03-2014, 06:50 PM   #3
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buy used SAP then, they are cheap.
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Old 12-07-2014, 04:29 PM   #4
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There was a guy called Gary that was going to make some plug and play SAP simulators for the 45.1, but due to low demand he abandoned the project.

The 45.1 is very tricky because the ECU monitors both a sensor on the SAP and the O2 sensors during startup, so a SIM has to be spliced into both circuits, and be smart enough to stop simulating the O2's a few seconds after startup.

Last I heard, nobody could tune this thing out of the 45.1 either. I checked with Active and ESS, and couldn't find anyone else that could do it either.
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Old 12-07-2014, 08:18 PM   #5
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get a SAP/EGR block off plate and a epic tune. 300 spent to give you more zroom
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Old 12-08-2014, 02:44 PM   #6
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Quote:
Originally Posted by HakenTT View Post
buy used SAP then, they are cheap.
I did this route with my SO's 325i. She's now on her 3rd SAP in 170k miles. I don't want to keep buying an SAP every few years, so I was able to delete hers just fine after finding out about coding it out (she has the MS43).

Quote:
Originally Posted by 03_330Ci View Post
call epic motorsports have randy get you a tune for a SAP delete + headers, buy the block off plate and gasket install. flash ecu, drink beers cheers
I'll have to give them a call to see if they have something available for the MS45.1. I figured I'd have to get a custom tune in order to do this.

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Originally Posted by 03_330Ci View Post
get a SAP/EGR block off plate and a epic tune. 300 spent to give you more zroom
Already bought the plate when I removed the broken SAP As you are now the 2nd person to recommend Epic, I'll be giving them a call!

Thanks for your replies everyone, I appreciate it.
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The E46s are the Knights of the chessboard. They can outmaneuver the other, more powerful pieces on the board. They aren't the King or Queen of the garage, but they are the first piece that you want to move.
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Old 12-08-2014, 09:02 PM   #7
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Do let us know if Epic can tune out the SAP from a 45.1 DME... Last I checked nobody could do that... I'd be giving them a call if they can do it because I really want that extra room in my engine bay
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Old 03-08-2015, 08:40 PM   #8
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Bump, can they do it to ms54.1? About to delete mine....
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Old 03-09-2015, 02:35 AM   #9
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In for results. Been pondering this for a loooong time
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Old 03-09-2015, 08:32 AM   #10
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In for results. Been pondering this for a loooong time
I emailed Epic - lets see if they respond. Will be doing mine in next 90 days - headers, delete, tune, if thye work it out for MS45.1 - probably be sooner honestly.
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Old 03-09-2015, 02:10 PM   #11
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FYI - got a response from Epic

Hi Trevor,

I assume you mean that your car is MS45.1?

We do have a calibration for your car with headers and are able to disable other emissions related items for off road use i.e. SAP.

We can convert it to a manual at the time we do the calibration.

Let me know if you have any further questions.

Randy Mueller
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Old 03-10-2015, 02:14 AM   #12
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SAP can be easy deleted from ECU.
Read this with BDM100 and post. I' ll try to delete this for you.
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Old 03-21-2015, 12:24 PM   #13
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Can you make it appear as ready in the emissions monitoring info? How about cat monitors?

If you can do that, I'll purchase a BDM100 tool on Monday.
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Old 03-21-2015, 12:34 PM   #14
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Cat monitors delete not free...sorry.
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Old 03-21-2015, 12:50 PM   #15
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Quote:
Originally Posted by RJLynn View Post
Can you make it appear as ready in the emissions monitoring info? How about cat monitors?

If you can do that, I'll purchase a BDM100 tool on Monday.
It would appear as "N/A" as if it was never there, which does not count against you when you get emissions.
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The E46s are the Knights of the chessboard. They can outmaneuver the other, more powerful pieces on the board. They aren't the King or Queen of the garage, but they are the first piece that you want to move.
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Old 03-21-2015, 12:54 PM   #16
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You sure about that? Seems odd that a car required to have a catalyst (read: every damn passenger car on the road sold in the us the year my car was built) could report back that it doesn't monitor the cats (also required). I mean it has a big fat sticker under the hood that says CATALYST.

It actually doesn't matter where I live, as there's no emissions checks. But if I'm going to purchase a BDM100 tool and have the ability to read and write whatever I want, I'm gonna be picky
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Old 03-21-2015, 03:44 PM   #17
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derp wrong thread

Last edited by RJLynn; 03-21-2015 at 05:04 PM.
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Old 03-22-2015, 07:47 AM   #18
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Sweet, SAP can be disabled using a tune. Apparently ESS can do this too. I'm going to get it done and I'll let you all know how it goes
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Old 05-22-2015, 10:22 PM   #19
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Success! My latest ESS tune has the SAP disabled, and I removed it from the car. Engine bay looks a lot nicer now and no SES lights



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