Cat or turbo

[illadelphia1.8t]

OK I have a 2000 1.8 with a Apr chip intake dv and cat back. I was driving home somewhat hard and started to smell something and was peaking at 10 so I popped the Hood and the Turbo was glowing red. So today it wont go over 10 psi and sluggish. What I'm wondering could it be the cat or Turbo? Appreciate any help thanks

[Mk2Reverie]

Is there exhaust flow out the tail pipe? Are there current fault codes? More input>

[illadelphia1.8t]

Is there exhaust flow out the tail pipe? Are there current fault codes? More input>

There is flow out of the exhaust it seems more quiet than it was no cell have no vag-com to use to pull. The car was stock till 100,000 miles then added chip two weeks ago.

[Mk2Reverie]

How much boost was it running prior to this problem?

[illadelphia1.8t]

I was peaking around 18-17 holding 16-14 I have a 2.5 custom magnaflow cat back no resonator and it seem quiet compare to other 1.8 I've heard but it is original cat on car Idk what caused the problem

[Mk2Reverie]

Sounds like the turbo could be suffering from oil starvation. Check your oil level number one - If the level is good you could still have an issue with delivery to the turbo itself.

[illadelphia1.8t]

I checked oil this morning it was a little low I added more and it didn't change what would you suggest to start to troubleshoot what is causing it? Newer to turbos and learning as I go thanks for your insight

[cincyTT]

Scan for codes. If you get a bad bank 2 o2 code, it's the cat. If the exhaust is restricted the turbo can't produce more psi. Exh flow = turbo spinning = psi

[illadelphia1.8t]

Scan for codes. If you get a bad bank 2 o2 code, it's the cat. If the exhaust is restricted the turbo can't produce more psi. Exh flow = turbo spinning = psi

Only probably I had o2 delete on my software cause I planned on doing hfc or test pipe later so I guess I gotta do it now and see if that is the problem right?

[hammeredGLI]

iam thinking clogged cat....

[h3ooo]

did it smell like rotten eggs? im not too familiar with the a4 since i just bought one but have years and years experience with dsm's sounds like you melted part of the cat(the inside) causing too much back pressure off the turbo causing it too glow red. You will have oil being burnt up a little since the bearings are getting over heated from the turbo itself. Since you have a secondary o2 delete you wont throw any codes unless you get too much backfire and it causes a misfire in one of your cylinders.

[illadelphia1.8t]

Now its in the 4 to 5lb range and it has no cel can it go limp with out cel? I can't take the cat off till I get money

[hammeredGLI]

find someone with vag-com to log it..

[Connella08]

i cant imagine that a turbo would fail with these symptoms. i would say plugged cat.

[GOODBYNAAIR]

I have APR stg 1 on my car with intake and DV and just put in a test pipe with the stock exhaust. I can see the difference in how fast the k03 spools up now ! 2.5 " coming, but that stock cat holds so much back on the turbo. good luck look into a HFC or TP worth the money

[illadelphia1.8t]

I can get my exhaust shop to make a test pipe for 170 installed or buy a premade one so I'm not sure what route to go any differences in them? Thanks

[GOODBYNAAIR]

other then price, you can get it off ebay for 100 ish bucks that works or one from 034 motor or atp for like 150 ish all bolt on come with hardware

http://www.034motorsport.com/engine-...18t-p-440.html

http://www.atpturbo.com/mm5/merchant...Code=AUDIVW-DP

http://www.ebay.com/itm/1996-2005-B5...#ht_1532wt_952


I just got this one (ebay) ^^ the fit is not bad. it all bolts up to what the stock cat was. some other people have used it too

[h3ooo]

other then price, you can get it off ebay for 100 ish bucks that works or one from 034 motor or atp for like 150 ish all bolt on come with hardware

http://www.034motorsport.com/engine-...18t-p-440.html

http://www.atpturbo.com/mm5/merchant...Code=AUDIVW-DP

http://www.ebay.com/itm/1996-2005-B5...#ht_1532wt_952


I just got this one (ebay) ^^ the fit is not bad. it all bolts up to what the stock cat was. some other people have used it too

you should throw a spacer on that secondary o2 so your dont get a CEL

[Seerlah]

Your cat is clogged, which is causing way too much back pressure. That in turn is making your turbo overheat, because the exhaust isn't exiting like it should. I have a Labree HFC for sale, if you want to go that route. Or an ebay test pipe will be good.

[SinsearJetta]

I got my test pipe for $75 shipped from the classifieds on vortex...They are out there you just need to look....$170 is way to much for a test pipe

[bc_awd_98]

My ebay test pipe didnt fit. Front o2 would hit the block. So i ran with out a secondary o2 for a wile till i just made my full tbe. Then both sencors went out. Primary. Replaced it. Then secondary. Yet to replace as its not a big deal. 98 aeb

[hammeredGLI]

any change?

[illadelphia1.8t]

I was looking around the engine and found the vac line running across front of engine towards Turbo area was completely split so I rigged it back and it is now holding around 14 psi I still am gonna rip the cat out though thanks

[demonmk2]

I can get my exhaust shop to make a test pipe for 170 installed or buy a premade one so I'm not sure what route to go any differences in them? Thanks

RAI sales one for that much, plus it has the J bung so no cel
and yes it works.

[GOODBYNAAIR]

"you should throw a spacer on that secondary o2 so your dont get a CEL"

I have seen this what site was it on ?

[demonmk2]

use a non fowler spark plug spacer. they are in the help section at the parts house. I think the drill bit size I used was a 7/32 or 17/32 which ever is the biggest of the 2. then you will need to sand or file the lower inner dia. for exact fitment.

[hammeredGLI]

RAI sales one for that much, plus it has the J bung so no cel
and yes it works.

i run that set up and i still get a cel on occasion for 02 low activity.. or w/e.

i clear it and then wait til it comes back.

so its not full proof

[illadelphia1.8t]

When I replace the cat with test pipe do I need gaskets and hardware?

[EUR Mechaniker]

yes you need gaskets and hardware if your removing a factory cat...


Had this problem a few months ago on the passat 1.8T AEB. Breather system was plugged up and got the turbo so hot i could light a cigarette off of it (and did...)

[illadelphia1.8t]

I ordered a test pipe today I'm gonna try to get it done this weekend if I can make time I will reply if it helps thanks for all of you insight everyone don't know how I did it before forums

[GOODBYNAAIR]

i run that set up and i still get a cel on occasion for 02 low activity.. or w/e.

i clear it and then wait til it comes back.

so its not full proof

http://www.034motorsport.com/fabrica...e-p-20198.html

so this or what RAI has should work. no CEL yet if this comes up sorry for the noob ish but it will not hurt my car right running it like that ??

[illadelphia1.8t]

Got the test pipe on but the Turbo is still getting really hot its making boost now so any ideas