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Downpipes include main cats....

Posted by: Kent L on 2002-03-12 10:46:43
Account #: 19404

In Reply to: That means the main cats are replaced too right? If not, then I don't buy it posted by Audiboy on 2002-03-12 10:43:44

Its composition varies among vendors. O₂ sensors it before and after the main cat. This allows the ECU to see change between the sensors and not trigger a check engine light.

Pre-cats are removed from the aftermarket setups. These lie several inches right after the turbos.

Thread:

With all this talk of Downpipes lately, it seems there is a lot of confusion... - ryans4 2002-03-11 14:59:13 (11370 views)

I got updated info on RS4 DPs. - SmokinS4 w/Achtuning 2003-02-28 20:21:33 (285 views)

I'm confused. You mentioned in most kits, they have an 02 sensor before and after the cat.... - Audiboy 2002-03-11 18:43:53 (920 views)

Some kits move the sensors downstream so they straddle the main cats... - bitrbo 2002-03-11 22:17:40 (760 views)

That means the main cats are replaced too right? If not, then I don't buy it - Audiboy 2002-03-12 10:43:44 (634 views)

Downpipes include main cats.... - Kent L 2002-03-12 10:46:43 (749 views)

From what I understand there are always going to be error codes without software - S4atlast! 2002-03-11 16:02:00 (872 views)

You are wrong... - ryans4 2002-03-11 16:15:22 (891 views)

You mean... - S4atlast! 2002-03-11 16:19:57 (807 views)

no... the cat is in between the 2 O² sensors so they can take before & after readings - LosGatosS4 2002-03-11 16:30:58 (837 views)

Stock cats are ceramic (main), metal (pre), and I *think* a tad less than 2.25" - LCP 2002-03-11 15:39:06 (681 views)

thanks...updated the post. - ryans4 2002-03-11 15:48:18 (528 views)

Is there anything different on AWE dp's now? They did not have o2 sensors ... - Scourge 2002-03-11 15:31:08 (777 views)

Our very first design had the second O2 sensor before the main cat... - Todd/A.W.E. 2002-03-11 16:30:21 (1078 views)

nope, disagree - KAOS, AZ (Papa Smurf) 2002-03-11 15:34:55 (652 views)

I never heard that. AWE always had the O2 sensor moved... - ryans4 2002-03-11 15:32:41 (724 views)

Well... - Scourge 2002-03-11 15:42:07 (654 views)

"maintain proper tension on the wiring" what is THAT supposed to mean - Eric Fletcher 2002-03-11 16:01:40 (660 views)

Isn't "Snake Oil" something that claims improvement but is total crap? - ryans4 2002-03-11 16:11:09 (680 views)

From their website... - Kent L 2002-03-11 15:52:09 (595 views)

I guess this "relocation" was done after 8/2001...are there several versions of AWE DP's? - Scourge 2002-03-11 15:54:06 (483 views)

Interesting...my thoughts are... - ryans4 2002-03-11 15:47:02 (619 views)

This is the problem I had with the Milteks. - Chaka 2002-03-11 15:52:53 (863 views)

The ecu has no idea what the cats flow it's looking for a O2 delta - Eric Fletcher 2002-03-11 16:00:53 (646 views)

Re: A local tuning shop that works with AWE here also says... - Scourge 2002-03-11 15:50:25 (971 views)

Please have them contact us so we can correct their information. - Todd/A.W.E. 2002-03-11 16:33:56 (630 views)

Corrections: - Todd/A.W.E. 2002-03-11 15:29:28 (1170 views)

thanks...i edited my post. - ryans4 2002-03-11 15:31:50 (550 views)

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