Author Topic: SAI Delete - Research so far...  (Read 20142 times)

Offline OSR

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Re: SAI Delete - Research so far...
« Reply #30 on: 10 October 2016, 19:09 »
OK so finally managed to get photos sorted  :smiley:

Here we go;









So it's an AUM engine code and there are two of these hardlines welded together, originally black in colour but now a bit rusty! As I said I'm assuming I can just sack the pair off and connect the two coolant hoses directly. Makes things a bit tidier, and it's one less thing to put back on when I remove the inlet mani for polishing and refit.
« Last Edit: 10 October 2016, 19:13 by OSR »

Offline lemski

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Re: SAI Delete - Research so far...
« Reply #31 on: 10 October 2016, 20:05 »
That 1St hose goes along to the heter matric via the metal pipe. Ive never got rid of that as its from the expansion and the water return on the turbo. But if you take the inlet off youll see what can be bypassed and where. Ive never simplified coolent pipes. There not really inthe way when you remove the inlet

Offline OSR

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Re: SAI Delete - Research so far...
« Reply #32 on: 16 October 2016, 08:02 »
So progress continues and I've decided to make up some plug and play resistor packs. The reasons are twofold, firstly if I decide for whatever reason that I want to reinstall any of the systems at a later date I can, secondly in the event that a resistor fails I can disconnect and make up another one without having to unsolder or hack the wiring about again.

Progress so far is I made up three packs last night using some black automotive wire and resistors from China. The wire is a bit overkill as it's 17A but all I could find yesterday. The plan is to heat shrink the joints for neatness and order some 2pin connectors to make the plug and play connection with the car.


RC81

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Re: SAI Delete - Research so far...
« Reply #33 on: 25 October 2016, 20:31 »
Hi, I've been reading this thread with interest. Any updates since 9 day's ago?
Cheers  :smiley:

Offline OSR

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Re: SAI Delete - Research so far...
« Reply #34 on: 26 October 2016, 13:53 »
Hello mate - yeah apologies for the lack of update, I got to the stage above and have been waiting on my waterproof 2-pin connectors off eBay! These finally arrived last night so I'm hoping to get the stripping and crimping done this evening and the car harness part done this weekend. I'll make sure I get some photos as I go  :smiley:

In other non-SAI related news now I have the evap system removed I've taken the washer bottle out (looking to relocate into the drivers side wing) and also tuck all of those wires aware under the front panel above the headlight. Looks a lot neater with it all shifted out of the way albeit by hand at the moment until I decide how I'm going to secure it all in place and if I need to extend any wiring.
« Last Edit: 26 October 2016, 13:56 by OSR »

Offline OSR

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Re: SAI Delete - Research so far...
« Reply #35 on: 26 October 2016, 21:22 »
Right here we are folks - some photos below of tonight crimping session and the finalised plug and play resistor packs.

Gather your weapons of choice, in this case a pair of wire strippers and crimpers. To be honest I only ended up using the red handled tool which does both but it never hurts to have too many tools handy right? You may also notice I added a bit of heat shrink over the soldered joints too.



Picture of the contents of one bag which includes all the bits to make one female-male connection. You have the yellow rubber grommets which seal the wire inside the connector, the black housings and a pair of female and pair of male pins. I opted to have the male part of the connection on the plug in pack and the female will be attached to the cars wiring harness.



First things first, strip approximately 10mm of wire and slide the rubber grommets over the wire so it's just sitting on the outer sheath of the wire (not the bare wire). Also make sure these are the right way round!



Next - crimp those badboys up! You will need to crimp both the metal pin to the bare wire, and also the larger part of the metal pin to the yellow grommet. I think some of the fancier tools do both of these operations at once, but I simply used the 1.5 (red dot) crimp to do the first bit and the 2.5mm (blue dot) crimp to do the grommet bit.



Next you insert the metal pins into the male connector and clip the red lock tab into place. I'll be honest here and this was an absolute nightmare and really fiddly so I ended up clipping the lock tab into place and using a bit of persuasion to get it to sit right and locate properly.



Finally I wrapped the lot in black elec tape to neaten it up. My plan is once it's all fitted to the car to use black corrugated trunking like the OEM stuff to hide it all inside in any case.



Three completed resistor packs, ready for the female connectors to be installed onto the car at the weekend all being well and everything plugged into place.  :smiley:

« Last Edit: 26 October 2016, 21:40 by OSR »

Offline lemski

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Re: SAI Delete - Research so far...
« Reply #36 on: 26 October 2016, 21:34 »
There cool. Something i may use for the airbag resisters on my a4 when i change the seats

Offline OSR

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Re: SAI Delete - Research so far...
« Reply #37 on: 26 October 2016, 21:43 »
There cool. Something i may use for the airbag resisters on my a4 when i change the seats

Cheers dude! I'll make sure I take some more photos at the weekend when  install the other halves.

I'll try to dig out the link for what I ordered - they took about 7 working days to show up but were something daft like £5 for a pack of 5 "kits" where each kit makes a full male-female connection. Demon Tweeks have them for about a fiver each!

RC81

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Re: SAI Delete - Research so far...
« Reply #38 on: 27 October 2016, 13:04 »
Those little plug & play resistor packs are cool. Easy to refit things if you ever needed to? I've seen the loom plugs on eBay a few times. My preference would have been to Solder every connection but crimping will the job just fine. Have you had the car running yet? I'm interested to see how your 1.8T runs without the SAI?

Offline OSR

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Re: SAI Delete - Research so far...
« Reply #39 on: 27 October 2016, 13:20 »
Those little plug & play resistor packs are cool. Easy to refit things if you ever needed to? I've seen the loom plugs on eBay a few times. My preference would have been to Solder every connection but crimping will the job just fine. Have you had the car running yet? I'm interested to see how your 1.8T runs without the SAI?

Yeah the refit element was my main driver for this, plus I don't like the idea of just ramming a resistor into the existing plug and calling it a day - it's worth doing properly.

I also had a hunt around on eBay for actual VAG plugs which would have been ideal, so I didn't have to modify the original wiring harness, but I didn't have much luck finding the male ends as these tend to form a part of the actual component and most places sell the female connections only I assume so you can create/replace/modify looms to hook up OEM equipment.

I had the car running for a couple of months now without the SAI and it does run a lot better in my opinion. I've not had it running in earnest with the evap system removed (other than to move it out of the garage to wash it and back) and in all honesty it ran like a bag of spanners but I didn't have a resistor fitted and had a couple of unblanked vacuum ports on the inlet as I was literally moving it 5 metres onto the driveway.

Part of the idea for this thread was to do my own detailed dig into the SAI system and walk everyone throguh the process I'm going through step by step. Most of the good info and DIY guides are over on Vortex and relate to ARZ engine codes (plus another I'm not that familiar with) and I was keen to pout something down for the community to see how it works on an AUM (and AUQ I assume), however I cannot really comment on the AGU.