Secondary Air Pump Delete E46
Merely unplugging the SAP and blocking it off is an option and would yield a check engine light amongst a few other problems that are not as aparrent until the functions of the DME are described. Is this PURELY for emissions purposes? Or Lambda engine default selection by code word CWSLS in%SLS analogues to lean warm-up. Must also help the bigger secondary CAT's too. SO I had to 00 out other items in order to get the SAP system to truly be "deleted" from the cars ecu functions. If you ONLY disable the SAP in the ESKONF file and make no changes to the cat heater operations the car stalls out on first cold start of the day. Rich warm-up: Default selection KFLASKH with 1, 1 to 1, 2, transition to > 1, 3 when starting from rest and adjustment to the lean performance limit (lalgm) from%ESWL, as described in%LAMKO. Last edited by zarboz; 04-26-2019 at 07:21 PM. If you don't it will ruin the cats. I have been driving with the relay removed for 4-5 years. Maybe some on the tops of the pistons too. The SAP interacts with lambda tables and timers as well as interacting with catalyst heaters and heating function. Euro byte for Secondary Air pump = 0.
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E90 Secondary Air Pump
I like to pretend I know stuff. Glad I don't have one! Last edited by 16valex; 05-03-2019 at 01:44 PM. As a result just leaving the check engine light on (even making it be quiet through software was not enough). "0:no secondary air system, lean catalyst heating operation of the engine | 1: with secondary air system, rich catalyst heating operation of the engine ". This the kind of kit that connects to the 02 sensors I bought this simulator from a vendor here at bimmer. Glad my LS3 doesn't have CAT's or an air pump. 0Code:bit 7 6 5 4 3 2 1 0 +---------------+ x| CWKONABG |x +---------------+ | | | | | | | +-- B katfz | | | | | | +---- B kath | | | | | +------ B slsfz <<< defining byte for is the SLS system installed in the car | | | | +-------- | | | | +---------- | | | +------------ | | +-------------- | +---------------- |. Takes a little extra key turn to get her on. Your not that far from Pikes Peak, take it up there and let it sit for a few hours and see how it starts.
Secondary Air Pump Delete E46 Motor
Long explanation below the TLDR is here: MSLUB and MSLBAS are expected return values for the SAP pump CWKONABG tells the car that the SAP is not installed and to treat the kats differently the CLA* items silence the check engine light because the pump is unplugged. I figure I throw it on here for someone who interests in this mod. Codeword for secondary air system. The engine runs EXTRA rich when the SAP runs so that the unburnt fuel can be burnt in the cat with the air from the SAP. Ed in San Jose '97 540i 6 speed aspensilber over aubergine leather. You get to lose some weight, remove a few potential sources of vacuum leaks, simplify the engine bay, and you don't have to hear a pump whining on every cold start. Well the SAP diagnostic routine function as well as its existence impacts a few other REALLY important motor functions. Thanks for that Danny / Jim.
Secondary Air Pump Delete E 6 2
With the normal A/F about the only negative I can think of other than possible CAT issues would be the back sides of the exhaust valves may get more carbon deposits on them. OBD2 scan shows no error for SAP either meaning I could pass emissions. The base point distribution of KFLMSKH, KFLASKH is to be chosen such that the "catalyst heating idle range" is sufficiently covered with regard to engine speed and load at idle and that a steady transition by interpolation to partial load can be performed. It has been working flawlessly for 4 years now. Long explanation below: By the bit B slsfz from CWKONABG the catalyst heating concept without / with secondary air system becomes compatible: B slsfz = | 0: no secondary air system, lean catalyst heating operation of the engine | 1: with secondary air system, rich catalyst heating operation of the engine Further possible secondary air variations are described in%SLS. I have sufficiently coded the SAP out of the DME portion via the 64kb mapping tables myself a I have talked with a few dudes online in Russia who are familiar with our DME and all 4 of them gave me different methodologies and reasonings why the other guy was missing X function or why Y function was important to 00 out as well it was pretty easy to figure out once i had some data sheets. They cannot handle that much extra fuel without air on short trips, maybe it will burn off on longer runs. This heats the CAT's up quicker along with the pre-CAT O2 sensors. I was more just curious what negatives I am looking at other than emissions and slower catlyst warming on cold start due to leaner fuel conditions. The goal is to get the cats to work ASAP. Sounds like a win/win to me. The SAP helps burn the rich mixture that is used during a cold start.
Secondary Air Pump Delete E46 1
Secondary Air Pump Delete E46 Oil
The reports are in: If you disable all the routines that check the cat heater the car turns on and runs just fine on COLD start (like 28 degrees outside). I was purely going off what the guide for the software in our DME says.. basically is saying if it reads that the SAP is disabled by that binary bit it changes the startup method to inject less fuel during warmup routine only. NO cel no nothing, quiet as a mouse. So in my adventures of learning how to tune my car I wanted to track down DTC definitions (I have all of them I think) and that required some testing. Give it a try and report back, of course it's now getting warm so it might work pretty OK.
Secondary Air Pump Delete E46 Parts
CWKONABG Altering from 5>1 is required (Explanation below). So realistically what are you losing out on here? I was speculating that this richness is purely during "warmup function" which i would imagine the SAP dumps air + Gas to the cats to get them up to operating temp as fast as possible in case of a cold start emissions test? 1, 2 x 10" Kove audio subs, Alpine ICS X7 Headunit, 19" BBS Hammer Sports RT245/RT246, Muffler delete, electric coolant fan. There's no real harm in deleting it if you block it off properly and code it out correctly (which plenty of reputable tuners like DUDMD will do as part of a tune). Richer dependent on load (rl) when starting from rest and adjustment to the lean performance limit (lalgm) from%ESWL, as described in%LAMKO. What am I doing to my motor. Some emissions issues at all? 1992 525i 5-speed - Thread. I actually planned on going up to the mountains this weekend hopefully its chilly enough to get a real life result from this change test to see how it impacts fuel on start in a real world application.
Then once a month read codes that are NOT SAP related. Did you change the A/F on cold start? I also deleted my SAP using a kit I bought from here. Airlift 3H/P management, M5 steering box, M5 LSD, Eibach/Dinan front and rear anti roll bars, PM Modifich door boards, 4 Eton 6. Well I did the SAP delete on my 97-528 using a kit from someone here. Cold startup fuel enrichment is separate from Cat-preheating enrichment. Some catalyst warming function during cold start. 5s, Sound Magus VS3500.
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