Originally posted by dakon
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if you have seen my S54 wiring photo from the BFC thread, you can see that the BOTH s52 AND s54 harness had to be unwraveled and re-configured to a custom standalone spec.
an s52 DME has 24 wires going into it. The body plugs all together have 25 wires, and there are around a dozen sensors needed with 2-3 wires per.
24+25+12X2 would be = 73 wires
ADD 1x S54 worth of wiring (assume it is same as S52 although it is NOT and has MORE wires)
73 (s52 harness) +73 (s54 harness) + a few....== more than 140 wires to touch and manage.
then you have minimal ..... 140 wires to handle, ID and decide WTF to do with. This takes a LOT of time and if work was rated par via wires to 6 wires @ $100....... the harness merger cost would be $2300-2350 USD??
After both S52 and S54 harness are complete un-raveled and ID'ed you have to pin the correct items into the MOTEC standalone connector- this is not the most fun but not terrible, then you have to build a relay system minic-ing OEM to trigger the coilpacks, injectors, and integrate some secret fuel pump and other item disable switches that work great for doing injector/coil pack testing etc :)
Obviously IF doing custom wiring can do custom anti-theft:)
I do not enjoy the thought of another individual being able to drive my S54 powered swap :) Don't ever let a friend drive a similar creation, you may loose a friend.
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The above link I posted for 2JZ-GTE swap wiring will show every single wire needed to wire the 2jz with full toyota OBD function; I had my car inspected at Toyota San Francisco post entire 2jz-gte BPU swap as they had supplied all OEM items for the engine build.
S54 is a DIS 24v dohc item with even more wires than the 2jz-gte (dual vanos, German car vs Japanese car lol;
--------one can figure out themselves the work required :)
S54 custom harness for standalone = many more hours than 6 wires, much more labor expense. Anyone willing to do this work for cheap may simply be naive and you may NOT want to hire them...... :)
If you wanted a 2jz-gte in your E36 or e30 plug and play I could do it custom turn key, DR. Tweak could also. It is only a matter of understanding the systems and willingness to adapt and cross check ridiculously. Tedius process that you may not want to trust to just anyone..... DTA S100 is close to $2k to replace if you melt it yourself somehow....
IF some one (with electronics ability like steve) decides to hack the 413 and make a daughter board to run the S54, I don;t see why it cannot be done. the daughter board could be designed to plug and play into to any M50vanos harness and output to S54 Dual vanos, it would be similar to my inital target (failed) of trying to run the S54 on S52 OEM DME.
the wiring harness will plug and play to s54 almost (as my thread shows) but the settings/mapping is not close enough to fire.
I have a proven tested PNP S54 harness on my shelf and my own Alpha-N high speed high load (170mph OVER on 91 octane) mapping files for the S54 being assembled, When the time comes it will be 100% plug and play just like installing any other BMW I-6
Originally posted by dakon
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they are charging ~ $1500 for: harness and e-throttle adapter kit
$1500 (the rest) for hacked ecu (OEM). so the lump profit is from this item.
Cheap M50/s50/52 swap options are only because the DME IS OEM = $cheap.
Standalone EMS will always be $,$$$ affair. Why? because standalone.
why can BMWrld get away with this? easy - they paid the hacker enough to keep quiet and lock the supply of hacking down :)
ABL sells a custom hand built harness ($1500) for Standalone use, the Standalone costs ~ $2k. so you are paying same for the custom harness but more for a better product (2k for real standalone brand new with warrenty, vs a hacked stock s54 ecu for $1500).
you will probably not find anyone who can deliver a 100% plug and play harness for S54 to a standalone who can actually back up the work and will not want premium dollar for it- its a white collar affair you are requesting, the level of expertise required is very specific.
I doubt the people doing "e30 - 24v swap adapters" will be able to deliver anything close to a S54 PNP full harness for standalone-
on top of that be able to handle the mapping required for alpha-N to not melt your $5,000++ S54 playtoy.
This is not some junkyard M50 that can be had on craigslist and easily replaced, its a WBS full CNC head S54 @ 11.5:1 compression - not for the average hack to be tuning on a homebuilt megasquirt the first time around..... it will HURT $,$$$ to replace/repair an S54 when it goes.
the S54 core assembly can be gotten for as low as 3k in ugly shape yes.....but it will cost quite a decent chunk of change to setup to full turn key. Not something the wiring "adapter" crowd would be playing with - there should be no "ADAPTERS" when talking S54 wiring. HARD WIRE everything, or re-pin. No surplus noise in the system.
I've seen these wiring hell's go down for the last decade in the subaru / toyota /and now BMW world- its not for most, the premiums reflect it.
I have been requested to handle basket case subarus/others over total wiring hell over the years, on occasion I have handled them - usually I run away -Its not worth the risk to trip sombody else's potential electrical fire
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