S3 Catch Can advice

Brodster

Brodster

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Have been doing a little research on fitting a catch can to the S3 but just need a little push to go ahead and get one and fit it. What are the pros and cons of fitting one. I know it will greatly reduce the chance of valves carboning up (I believe) but are there any other benefits to fitting one. And where is the best place to acquire said catch can and how easy to install one. Cheers
 
Hi mate. Still running Stage 1 so probably about 310bhp. Have heard that its better for the engine if fitted after remapping so if anyone can say otherwise then I wont get one.
 
I haven't found a 'con' yet, I fitted a forge and empty it about once every 1.5k although it's not full.
Watching the amount of gunk coming out of this thing makes you realise what a good decision it was to fit it in the first place, it's a doddle to empty and takes about 5 minutes.

The other 'pro' to the system is that there will be no more PCV valve issues.



2012-06-20070438.jpg




2012-07-12170846.jpg
 
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Brodster said:
So then if its a good idea wheres the best place to get one.
Click to expand...

I got mine directly from Forge but I guess there's a few places. Oddly enough some sites say that the kit will not fit a 2010 S3 with Xenons, this is incorrect as the above pics testify
 
Forge here.

Good for keeping my car running properly.
 
Hi, just fitted mine and i got a massive prob, there's a gap on top left corner, did yours fit flush??? many thx
 

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So is the catch can worth it? I keep hearing diff opinions and keep putting it off! Anyone got the Revo one ? Or is forge the best ?
 
I don't see the point... I run a PCV blank. The gunk is oil and water from condensation created when the engine cools and heats up. Any water would evaporate when the engine gets hot anyway, so all you're doing to collecting this when you really don't need to. It's also a a great way of loosing boost pressure.
I could be wrong but from what I've seen, they don't help. They make it look like they're doing a good job, but all they do is make a problem look worse than it actually is.
I'll be cracking the inlet manifold off my car later this year anyway to check everything is up to scratch. And who wants to be checking on a catch can all the time and emptying it. All marketing BS in my opinion.
 
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lucky_bob said:
Hi, just fitted mine and i got a massive prob, there's a gap on top left corner, did yours fit flush??? many thx
Click to expand...

That is the exact same problem I had with the Revo PCV delete, and its why I removed it again. Wasnt impressed at all!
 
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s3_trev said:
That is the exact same problem I had with the Revo PCV delete, and its why I removed it again. Wasnt impressed at all!
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I spent few hours talking to forge, must say customer service is top notch, came to conclusion that it's not the forge's fault but my valve cover ain't straight so spoke to audi who didn't seem impressed me saying that it's audi's fault ended up orderin' brand new cover, will pick it up tomorrow if it's straight then happy days if the same as mine then that blanking plate isn't compatible with my car, bye bye catch can :detective2:
 
Would be very interested to see how you get on with that mate. Keep me updated please. How much was the cover by the way?
 
s3_trev said:
Would be very interested to see how you get on with that mate. Keep me updated please. How much was the cover by the way?
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will do bud, will know exact numbers tomorrow, will keep ya informed;) has anyone else had any issues with pcv blanking plates?
 
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DeckedS3 said:
I don't see the point... I run a PCV blank. The gunk is oil and water from condensation created when the engine cools and heats up. Any water would evaporate when the engine gets hot anyway, so all you're doing to collecting this when you really don't need to. It's also a a great way of loosing boost pressure.
I could be wrong but from what I've seen, they don't help. They make it look like they're doing a good job, but all they do is make a problem look worse than it actually is.
I'll be cracking the inlet manifold off my car later this year anyway to check everything is up to scratch. And who wants to be checking on a catch can all the time and emptying it. All marketing BS in my opinion.
Click to expand...
did ur pcv blanking plate fit flush? i do short runs so get mayo on my oil cap, did want to give a catch can a chance to prove wot it's makers promises, but at this point i can't even fit the ****** thing :sos:
 
lucky_bob said:
did ur pcv blanking plate fit flush? i do short runs so get mayo on my oil cap, did want to give a catch can a chance to prove wot it's makers promises, but at this point i can't even fit the ****** thing :sos:
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Mine fitted fine. If yours doesn't, how does the oem PCV system hook up properly? My plate is basically the same shape but blanked.
 
DeckedS3 said:
Mine fitted fine. If yours doesn't, how does the oem PCV system hook up properly? My plate is basically the same shape but blanked.
Click to expand...
oem pcv systems plate has a edge witch does a really nice cover up job, did audi know plastic might bend, hmmm...:detective2: will c when i'll pick up the new cover in few hours...
 

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audi upgrades
...so, just came back from audi, new cover still at audi waiting to be shipped back where ever it came from...took the forge plate with me just to be sure and guess wot, new cover was as bent as the one i got on my car at the mo, so thx but no thx, had to pay few quid postage charges but that's only fair. Car is going to AMD on 19th for few other mods to be done so will tell them to take a look wot's wot...but at the mo forge catch can is a no go...:3sadwalk:
 
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Good quality german plastic.

I'm sorry you've had a lot of trouble there.

We had no troubles with the Forge gear on my old cam cover,and if you get really stuck,get AMD to give me a call and I may be old to drop my old one over.

It's not pristine but it will fit.

Thankfully I don't have to worry about plastic any more!

What else are you having done?
 
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yeah, will c wot AMD can do regarding my cover... i got wagner intercooler, h&r arb's, whiteline alk kit, rs4 fuel pressure valve, 034 motorsport upgraded top mounts and bearings all sitting in my room, itching to go on my S3 + AMD got eibach pro kit, loba hpfp waiting for me at AMD HQ ...i think u guessed that im going stage 2+ :anonymous: forgot the damned forge catch can :dejection:
 
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+ still waiting a parcel from yankland OSIR should send me some pure engine bay pornography :anonymous:
 
lucky_bob said:
...so, just came back from audi, new cover still at audi waiting to be shipped back where ever it came from...took the forge plate with me just to be sure and guess wot, new cover was as bent as the one i got on my car at the mo, so thx but no thx, had to pay few quid postage charges but that's only fair. Car is going to AMD on 19th for few other mods to be done so will tell them to take a look wot's wot...but at the mo forge catch can is a no go...:3sadwalk:
Click to expand...
Interesting!!
 
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well i would call it ****** depressin' , still a bit puzzled why some covers seem to be straight( cos there's a lot of people runinng catch cans\blanking plates without gaps) and some crooked, could they come from dif factories or bad batch, dunno...will c wot AMD will say, maybe its just me who's youtube mechanic certificate is no good and can't fit it properly....:ninja:
 
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that's my hand after catch can install attempt, that washer bottle pipe is a pig to fit...
 

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Ouch! My rocker cover is bent as well BTW. After I took the pcv delete off, I put the standard pcv back on, and made a metal bracket that sits over the left side (the side that starts to run off) in order to grip it in better and prevent any possible leaks. Im running stage 2+ and it seems to be working great. Can take a pic if you like.

Oh and here is a pic of my rocker cover running off.

 
In this one the pcv delete is installed, and there is that much of a gap that you can see the orange gasket!



Would love to know how the cover is running off, what caused it etc etc. But then if you say you had your hands on a brand new one and it was bent as well? Very strange.
 
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Good find! Wonder do they do a simple pcv delete, as Im not too interested in a catch can tbh. I think that 42DD are the same company that makes the bushes for the gear linkage that some of the s3 boys like to use.
 
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s3_trev said:
Good find! Wonder do they do a simple pcv delete, as Im not too interested in a catch can tbh. I think that 42DD are the same company that makes the bushes for the gear linkage that some of the s3 boys like to use.
Click to expand...
dunno, but i know i paid 350 odd quid for forge kit n i expected it to fit...not happy...
 
i must say forge customer service was really good when i spoke to them few days back, will c wot they gonna say now, when i know that new cover comes bent as well, hope to get some refund back cos rest of the kit is spot on n i hope i can use 42dd plate with rest of the forge kit...will c...
 
lucky_bob said:
yeah, will c wot AMD can do regarding my cover... i got wagner intercooler, h&r arb's, whiteline alk kit, rs4 fuel pressure valve, 034 motorsport upgraded top mounts and bearings all sitting in my room, itching to go on my S3 + AMD got eibach pro kit, loba hpfp waiting for me at AMD HQ ...i think u guessed that im going stage 2+ :anonymous: forgot the damned forge catch can :dejection:
Click to expand...

You'll love it when it all comes together.

We had no problems with mine,other than maybe skinned knuckles for Steve,but he says my car always puts up a fight.

Stg2+ is a great upgrade....goes well,miminal lag,don't have to get to 4500rpm to light the fuse etc.

And while we're on the subject of catch cans.....another 200mls of nastiness drained from the system on mine today.
That's averaging 200mls or one full can per month...way more than the previous system was catching.
 
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If often wondered, if you are removing all of that crap from the system, do you need to regularly top it up with fresh oil then??
 
s3_trev said:
If often wondered, if you are removing all of that **** from the system, do you need to regularly top it up with fresh oil then??
Click to expand...

Now that's an interesting one.

I have noticed I'm putting a bit more oil in,but the previous system was simply catching some of the muck,and the rest of it was entering via the rear cam cover breathers,and being burnt....so it shouldn't use more really.

What I think is happening is some oil vapour is getting out via the cam cover breather,and getting lost to the catch can that way.


This is on the underside of the cam cover,underneath the cam cover breather pipe....



And the breather pipe...

 
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i think cold weather makes the condensation a bit worse so they will fill faster...hope to get my up n running next week when 42dd plate arrives at my door...
 
S3Alex said:
You'll love it when it all comes together.

We had no problems with mine,other than maybe skinned knuckles for Steve,but he says my car always puts up a fight.

Stg2+ is a great upgrade....goes well,miminal lag,don't have to get to 4500rpm to light the fuse etc.

And while we're on the subject of catch cans.....another 200mls of nastiness drained from the system on mine today.
That's averaging 200mls or one full can per month...way more than the previous system was catching.
Click to expand...
yeah, i can't wait...when bought the car wanted to get 300+hp, got stage 2, loved the increase in power, but now just wanna more, stage 2+ here i come:) let's be fair it's nice feelin' to put your foot down time to time, makes me grin every time:biggrin:
 
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