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  #1 (permalink)  
Old 04-29-2009, 09:03 PM
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Default Turbo 3 inch downpipe install

Does anyone or has anyone installed a 3 inch turbo down pipe on there 2000 beetle 1.8 turbo? If so can anyone tell me how to do that or what I will need when doing it. Thank you for your time and help!
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Old 04-30-2009, 12:27 PM
kaiser's Avatar
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put car up on lift(or jack stands), remove o2 sensors, remove clampimg sleeve, remove 4 nuts that hold if to the turbo. take out of car, install new dp.

once you get it up in the air you'll figure it out by looking at it. it's easy...ish.
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Old 04-30-2009, 02:01 PM
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You may need a BFH to get the pipes separated from the clamping sleeve.

It's pretty self-explanatory though. Remove and replace...no special tricks required. Make sure and get new copper pinch nuts and a new gasket for the downpipe to turbo connection. A little Wurth Exhaust Assembly paste might be a good idea for the clamp connection as well. You can buy it other places I'm sure but I know that tdiparts.com has it.
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Old 04-30-2009, 04:47 PM
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Now a question--are you hooking this 3" DP to a stock KO3 turbo? or do you have a BT? Cause this is expensive overkill (overkill even chipped w/ a KO3)for very marginal gain if you don't have a BT , chip, etc. Your money can be spent more efficiently elsewhere if you are just starting on mods. Oh, and expect to break a stud--this is by no means a painless job.
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Old 04-30-2009, 11:36 PM
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Thanks for the info on the install! Sounds good. I will keep that in mind, and yes it is the stock turbo. I read somewhere that even a 3" pipe is not bad for the stock turbo, what is the worst that can happen?
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Old 05-01-2009, 11:29 PM
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also one more question, will this cause a check engine light to come on as well with this install? Thanks
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Old 05-02-2009, 02:53 PM
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Does this downpipe eliminate the cat and O2 sensors? Does a 1.8T have post-cat O2 sensors? If so then you will get a CEL if the cat is removed. If all you have is pre-cat sensors get a bung welded into the pipe so you can reinstall them.

Be aware that you are unlikely to see any noticeable power gains by doing this. You won't hurt anything either...but exhaust mods usually show little benefit on an otherwise stock engine. It will drop your EGT's somewhat, which is good for your turbo no matter what. And it also allows you to add more power in the future.
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Old 05-02-2009, 07:55 PM
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Quote:
Originally Posted by DZLBUG View Post
Does this downpipe eliminate the cat and O2 sensors? Does a 1.8T have post-cat O2 sensors? If so then you will get a CEL if the cat is removed. If all you have is pre-cat sensors get a bung welded into the pipe so you can reinstall them.

Be aware that you are unlikely to see any noticeable power gains by doing this. You won't hurt anything either...but exhaust mods usually show little benefit on an otherwise stock engine. It will drop your EGT's somewhat, which is good for your turbo no matter what. And it also allows you to add more power in the future.
The downpipe is in 2 pieces and it has to bungs for both o2 sensors. Thank you for the info. As long as it won't hurt anything that is all I am worried about. Thank you. ALso the clamp that clamps the rear part of the exhaust to the end of the downpipe will fit if it is 2.5 in and the stock exhaust is still at the rear? Thank you.
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Old 05-07-2009, 02:55 AM
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Car: 2000 New Beetle 1.8t (highly modified)
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In most cases the upgraded down-pipe will bolt in just like the stock piece, the only exception is usually at the point where the down-pipe connects to the catback, some modifications (tig welding) are normally required here.

The items that you will need are as follows:

1. Four new nuts (possibly studs) and a new gasket to connect the down-pipe to the turbo.
2. Anti-seize for the oxygen sensor threads (don't get it on the sensor probe areas) and the down-pipe to turbo studs unless you are using self locking copper nuts.

With a performance 3" down-pipe/cat assembly on this car, the chances are very high that your secondary oxygen sensor will cause a (CEL) and a P0420 code to constantly appear, but, there is a sanitary fix for this that usually works.

You will likely see some better response with the stock turbo under heavier boost in upper gears, however, the larger pipe may cost you some low end power with the stock turbo, stock or near stock setup but it won't hurt anything.

If you don't mind, can you tell us which brand pipe kit you chose?
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Old 05-10-2009, 12:05 AM
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I would add to the things you will need: The Patience of a Saint

Go slow, expect at least one problem (broken stud, etc.) and have a spare vehicle available for runs to the parts store for all the stuff you forgot the first time
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Old 05-12-2009, 01:41 AM
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99Turbo is dead right, haist will make one very unhappy person.
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Old 05-12-2009, 06:31 PM
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Quote:
Originally Posted by Too Cold NB1.8T View Post
99Turbo is dead right, haist will make one very unhappy person.
Hastily sold

FS 3" turbo downpipe 2000 1.8t beetle
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