possible solution for those running race cats or test pipes (i.e., TTinCT!)

gesTTalt · 11-05-2005, 12:48 PM

Other than getting your rear O2 turned off through programming, you'll get a cel. Electronic O2 sims don't work well with TTs. I test piloted Casper Electronics sims with little or no success. I had Garrett tune my GIAC chip, and Hans Dahlback did the same for my Dahlback chip - ran a HJS 100 Cell race cat or test pipe, no cel

Now, that I have a S2000, I wanted to run a test tipe. I've been using a mechanical O2 simulator/bypass. It consists of two sparkplug anti foulers. This method is used by many EVO and Subbies guys.

You take one of the antifoulers, drill the hole to approx 1/2", which allows the center of the O2 to fit. This one screws directly onto the O2 sensor. You then screw the second anti fouler on top. This brings the O2 sensor out of the exhaust pathway, as well as the smaller opening allows only some of the exhaust to contact the O2 sensor.

I've been running a test pipe on my S2K for over 12K mile with no CEL. I'm pretty sure this will work for the TT.

Make sure you get the correct thread pattern for the TT O2 sensor. The antifouler are available at pretty any local auto store.

Enjoy!!!

Here's some pics from a subbie:

First antifouler plug bored out:

Get the correct thread pattern!You can get either one of these.

TT_Nuge · 11-05-2005, 12:52 PM

I want to eventually replace the downpipe and cat....someday.

TTinCT · 11-05-2005, 12:56 PM

i will note this gary..thanks! I actually have something inbound with kinda the same idea. Tony Starkz built something, that basically the same concept, but canted back. Pretty inexpensive, we shall see. Thanks for the input tho man!

and yes...i would not try a 02 simulator on a TT...just not the ticket, unfortunatly! ;-/

gesTTalt · 11-05-2005, 01:02 PM

Seems like a lot of people are getting dp and test pipe. I think I may have been one of the first 225 owners with a dp and test pipe...did in a few months after I got my car in 01. Whew, that's a long time ago!

Anyhow, I still lurk here once in a while. Good to see some old timers too.

gesTTalt · 11-05-2005, 01:03 PM

TT_Nuge · 11-05-2005, 01:28 PM

In case you missed my earlier post, new winter rims.....

TonyStarkz · 11-05-2005, 02:21 PM

However, mine puts the O2 sensor parallel with the pipe as to keep ground clearance. Works flawlessly with my custom setup. Contact Wayne92slc over on vortex for more info/purchasing.

the Quiet sTTorm... · 11-05-2005, 02:40 PM

TTRPM · 11-05-2005, 03:43 PM

gesTTalt · 11-05-2005, 06:19 PM

Ya, I'm still in Cali. Looks like I'll be here for a while. Been so busy tho.

How's your car running?

11-05-2005, 12:48 PM	#1
gesTTalt Senior Member Account #: 24538 Join Date: Aug 2001 Posts: 5,284	possible solution for those running race cats or test pipes (i.e., TTinCT!) Other than getting your rear O2 turned off through programming, you'll get a cel. Electronic O2 sims don't work well with TTs. I test piloted Casper Electronics sims with little or no success. I had Garrett tune my GIAC chip, and Hans Dahlback did the same for my Dahlback chip - ran a HJS 100 Cell race cat or test pipe, no cel Now, that I have a S2000, I wanted to run a test tipe. I've been using a mechanical O2 simulator/bypass. It consists of two sparkplug anti foulers. This method is used by many EVO and Subbies guys. You take one of the antifoulers, drill the hole to approx 1/2", which allows the center of the O2 to fit. This one screws directly onto the O2 sensor. You then screw the second anti fouler on top. This brings the O2 sensor out of the exhaust pathway, as well as the smaller opening allows only some of the exhaust to contact the O2 sensor. I've been running a test pipe on my S2K for over 12K mile with no CEL. I'm pretty sure this will work for the TT. Make sure you get the correct thread pattern for the TT O2 sensor. The antifouler are available at pretty any local auto store. Enjoy!!! Here's some pics from a subbie: First antifouler plug bored out: Get the correct thread pattern!You can get either one of these. __________________ Current: 2007 Daytona Gray RS4 Past cars: 2001 DB 225 TTC 2005 SC'd Honda S2000 2007 BMW 328i 2004 Nissan Frontier 2001 Lexus IS300 1993 Honda Prelude 1989 Isuzu Amigo

11-05-2005, 12:52 PM	#2
TT_Nuge Senior Member Account #: 78082 Join Date: Jul 2004 Posts: 7,079	Good to see yo again Gary, good tip. I want to eventually replace the downpipe and cat....someday. __________________ My Fotki The TT FAQ

11-05-2005, 12:56 PM	#3
TTinCT AudiWorld Super User Account #: 6744 Join Date: Jun 2000 Posts: 24,717	oooo...that is slick>>> i will note this gary..thanks! I actually have something inbound with kinda the same idea. Tony Starkz built something, that basically the same concept, but canted back. Pretty inexpensive, we shall see. Thanks for the input tho man! and yes...i would not try a 02 simulator on a TT...just not the ticket, unfortunatly! ;-/ __________________ _____________________________________ Only 29,000 posts to catch SCHWING!!! _____________________________________ TT-East Questions and Answers here TT-East ________________________________________ TT-East 2008 Primary Organizer TT-East 2007 Primary Organizer TT-East 2006 Primary Organizer TT-East 2005 Attendee CT GTG Coordinator CT MOD Day Headquarters "self proclaimed" --------------------------------------- TT-East 2008 courtesy of McPaudiTT Linky to pics of Mods,Cars and Shows Link to the TT-FAQ's...if it ain't here, then ask!!! "thou shalt not flash a Porsche to get out of the way, or be damned to breathe his exhaust for eternity" - Someone wise TRACK THOUGHT- Don't brake until you see God.... then when you do see God, count to three, then brake! AIM name - EINTT Current Automotive inventory... 2006 Mercedes Benz R350 2001 Audi TT 225 1977 Porsche 911s 1961 Porsche 356b

11-05-2005, 01:02 PM	#4
gesTTalt Senior Member Account #: 24538 Join Date: Aug 2001 Posts: 5,284	Thanks Trent, how's the brakes? Seems like a lot of people are getting dp and test pipe. I think I may have been one of the first 225 owners with a dp and test pipe...did in a few months after I got my car in 01. Whew, that's a long time ago! Anyhow, I still lurk here once in a while. Good to see some old timers too. __________________ Current: 2007 Daytona Gray RS4 Past cars: 2001 DB 225 TTC 2005 SC'd Honda S2000 2007 BMW 328i 2004 Nissan Frontier 2001 Lexus IS300 1993 Honda Prelude 1989 Isuzu Amigo

11-05-2005, 01:03 PM	#5
gesTTalt Senior Member Account #: 24538 Join Date: Aug 2001 Posts: 5,284	You're welcome...it's a $5 solution...can't go wrong! Good luck with your setup! __________________ Current: 2007 Daytona Gray RS4 Past cars: 2001 DB 225 TTC 2005 SC'd Honda S2000 2007 BMW 328i 2004 Nissan Frontier 2001 Lexus IS300 1993 Honda Prelude 1989 Isuzu Amigo

11-05-2005, 01:28 PM	#6
TT_Nuge Senior Member Account #: 78082 Join Date: Jul 2004 Posts: 7,079	Brakes are great, work as good as they look In case you missed my earlier post, new winter rims..... __________________ My Fotki The TT FAQ

11-05-2005, 02:21 PM	#7
TonyStarkz Junior Member Account #: 27805 Join Date: Nov 2001 Posts: 2,029	I've been running a variation of this for a while now... However, mine puts the O2 sensor parallel with the pipe as to keep ground clearance. Works flawlessly with my custom setup. Contact Wayne92slc over on vortex for more info/purchasing.

11-05-2005, 02:40 PM	#8
the Quiet sTTorm... Member Account #: 49926 Join Date: Jan 2003 Posts: 7,618	How's the s2k treating ya!? Where can I find out what you're doing with it? __________________ TTgallery \| Audi TT FAQs \| TT Wallpapers \| Timing Belt Install \| Mods&Pics \| sTTook? Audi TT FAQs TT Buyer's Guide info (MK1) ---------------------------------------------------------------the S2k vrs TT debate The brotherman Audi Car Sale Thread is here (right click "save as" to see the Brotherman Audi TT sales pitch) Hallett Raceway review My MK2 Audi TT NAIAS review My MK2 Audi TT TTW drive review

11-05-2005, 03:43 PM	#9
TTRPM Member Account #: 50091 Join Date: Jan 2003 Posts: 2,082	hey Gary hows it going? still out in Cali? __________________ Ryan M. 2002 Audi TT 180 *low.life.society*

11-05-2005, 06:19 PM	#10
gesTTalt Senior Member Account #: 24538 Join Date: Aug 2001 Posts: 5,284	What's up Ryan! Hope you made it through all the storms... Ya, I'm still in Cali. Looks like I'll be here for a while. Been so busy tho. How's your car running? __________________ Current: 2007 Daytona Gray RS4 Past cars: 2001 DB 225 TTC 2005 SC'd Honda S2000 2007 BMW 328i 2004 Nissan Frontier 2001 Lexus IS300 1993 Honda Prelude 1989 Isuzu Amigo

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