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1.8t APH air pump (secondary air injection) permanent removal.

40K views 11 replies 7 participants last post by  Andy Wardle  
#1 ·
Has anyone gotten rid of their secondary air injection pump? I live in northwest washington state (U.S.) and I've never heard of or seen anyone here do a smog-emissions check and I find the darn thing to be a waste of money, space and time...

I'm wondering if the stock ecu program will be ok without affecting engine performance after warm up. I don't care if it keeps throwing p0411 codes as long as it wont cause other codes or performance problems.

What about when I get a unitronic chip for my aph? Will they or can they delete the secondary air injection program?

I'm guessing even then it could pass emissions tests in other states since I hear there's other beetles that don't have the air pump.
 
#4 ·
thanks for that link to the block off plate. I'm gonna need that.

Last night I found a complete emissions control removal at the vortex forums. This is probly one of the best DIY's written up especially for something this messy! It's long but you don't have to remove everything. Some people might want to leave the evaporation system intact since that might give you an extra mpg. Looks pretty much the same as the APH 1.8t. I think it should be stickied!

Behold.. The Ultimate SAI/N249/PCV/EVAP removal DIY VWVortex.com - DIY: Ultimate SAI/N249/PCV/EVAP Delete
 
#5 ·
theres a user 'reflected' on vwvortex and several others that can write out the code from your ecu for a few bucks but i believe you still have to have it resistored off.


if your going to do any type of chipping i would spend my money on eurodyne and be able to upgrade later on.

unitronic does not offer stock chipping and SAI deletes as i far as i know

BTW if anyone needs a SAI pump i have one for sale in ghe classifieds
 
#6 ·
Wait... wait...

Wait... wait...

Before you put your order in at I.E. check this out.

Billet Accessories

You'll see the SAI Block-Off Plate, the first item on this page, but you might want to consider the Breather Adapter as well, it’s the third item down for peace-of-mind and you won’t have to fabricate a new hose. I bought it for those same reasons I just mentioned. I didn’t see it when I first placed my order, and when I called them back the next day, they had to run to the back, and take it off the shipping pallet, that was going out that day.

Anyway, that DIY from Vortex is great. I was working from an older DIY, until I got frustrated with it last week, and decided to look for something new, and low-and-behold, I found the ULTIMATE!!!

Nevertheless, it sounds like I'm only going to be a few days in front of you, but let’s keep this posting alive here, and compare notes. It won’t be until next weekend, that I'll be back in the garage, but I've been meaning to get my Beetle Thread updated for the last year or so, and this will get me a reason to come back and spend some time in here.

One last thing, I don’t know if you have a Catch-Can or not, but I just bought my Catch-Can and Vacuum Block thru these guys.

2005-2011 Ford Mustang Shelby GT500 Billet Oil Catch Can Polished - UPR Products

My Mustang buddy showed me his Catch-Can and it was very high quality, and very reasonably price, plus it’s all made in the USA. There are some other great features, but won’t go into them unless you ask... this post has been long enough. Anyway, depending on where you want to put it, make sure you order the one for a "05-11 Mustang Shelby", or else the mount will be located somewhere else on the can.

Ok, I gotta go for now.
Later,
Motown
 
#7 ·
Resurrecting this, as my AGU engine came to me without an SAI, and I've been told I definitely need one.

Having come across SAI blanking plates on my eBay search for a pump, I'm beginning to think I should save my money! But what to do about the breather from the air box? Just cap it?
 
#8 · (Edited)
In your case; I would just keep it stock and make things work, as it should. I'm sure; you could find a used sai pump; if that is all, that is missing. This is going to compromise your emissions control system and I can only assume, a cel with cause you to fail, your MOT. A typical check by emission testing facilities; is seeing, whether or not the "readiness" checks are ok. Without the air pump; your readiness will fail and I cannot see, you passing a emissions test. Do not give in to the temptation; to "fix" things by removing what Volkswagen put in place and hoping for better results, of a car that has not been fully tuned and running correctly. Don't "hack" your car; use correct, quality oem parts and fix things correctly, you will be rewarded by better reliability and a car, that is easier to work on.

https://www.google.com/webhp?source...webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=readiness test volkswagen

Some states; here in the USA, do not have emissions testing; so, I can only assume, that is why/how someone would remove this from a car and still be able, to keep it on the road albeit illegally (technically, I believe removing any emissions controls; from a car that came with it, is a USA Federal offense and is punishable by fines, etc.).

Seeing where you're at; all the work and learning curve you are dealing with so far, keep your car stock and get it running correctly. Stick to the "KISS" principle; no need to add more complexity, variables to a system, that is a challenge enough, to keep running correctly as it is.

https://en.wikipedia.org/wiki/KISS_principle
 
#9 ·
I hear ya Billy but if it's only function is to super heat the hydro carbons from the get go, and then shut down once the CAT is up to temp, surely it's just something else to go wrong!? The emissions test on the current UK MOT test is taken once the engine is up to normal operating temperature, and as far as I'm aware, there is no necessity to check fault codes, unless, of course the thing is running really bad or smoking like a 40 a day man ;) And the lack of SAI pump has not thrown a CEL on my car. Also, the car must have passed it's MOT without one. When I bought the car I was provided with a fresh, 1 year ticket.

Having said all that, if it absolutely needs one, one will be fitted. But I think at this point, I need to speak to my local VW specialist, and see what the options are. If the lack of an SAI is affecting the correct running of the car, then of course, I'll make finding and installing one a priority. 2 weeks off work now, so I can spend some time investigating and sorting things out :)
 
#10 ·
Now here's an interesting twist! Whilst my engine has no SAI pump...neither does it have a blanking plate! Just been out with a torch to have a look. I'll get a picture tomorrow. Dark here at the moment.

Also the aperture in my block seems considerably smaller than the one in the How To link. Wondering if my AGU engine had a different type of pump..... Confused again! Still, need to blank it off in the mean time and there's a banking plate on eBay for ÂŁ10 ($16). More research required!
 
#11 · (Edited)
Just go to a breakers; pick up a used one, one less trouble code to fix and stop it from keep popping up on your OBD scan tool.
Look up your parts here; you should get the correct part #, then you can look for the part at a breakers or online, like ebay.

http://www.volkswagenpartsuk.co.uk/

From what I have seen here with USA spec Volkswagens; sai pumps from Jetta, Golf and New Beetles, seem to be similar if not the same.
 
#12 · (Edited)
Well my engine is an AGU, possibly from an earlier Audi A3. And I would also need a combi valve, which also houses the EGR. Looking online, these are not expensive from a breakers yard. However, there is another variable in the mix. As I mentioned, the port in my engine is considerably narrower than the one pictured in the above how to....

This is what mine looks like...
Image


And after a little clean up...
Image


This is the same area from the how to...
Image


I'm guessing the ports in the later engines were opened out for greater air flow. But I imagine the later pumps were also greater capacity. This leads me to the conclusion that a pump and valve for my engine will probably be harder to find second hand. Again, as I said, I need to go to my local VW specialist and find out, using their parts system. I used to use them all the time, so they know me pretty well, although I've been a stranger over the last few years. Hopefully I'll come away with some part numbers I can take to the breakers...