All Things Mk5 > Performance Modifications

3" Downpipes

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E30Dom:
Are they supposed to have two sensor holes, thought I read the rear one is coded out? Do I assume you still fit it...

There's one by the flange and one after the cat...

Cheers,

Dom

Tfsi_Mike:

I think mine was still fitted with the De - cat (couldnt have it coded out here in Germany though) Burnt my sensor out by not having it coded out I think

Perhaps its coincidence

vRS_Pagey:
All the downpipes I have seen (sport cat types anyway) have had holes for both pre and post cat O2 sensors, stage 2 software will right the rear one out of the equation.  But I have it on good authority that certain manufacturers' sport cats are so good, they won't throw up a CEL.  :innocent:

Tfsi_Mike:

--- Quote from: vRS_Pagey on October 05, 2011, 09:43:26 pm ---All the downpipes I have seen (sport cat types anyway) have had holes for both pre and post cat O2 sensors, stage 2 software will right the rear one out of the equation.  But I have it on good authority that certain manufacturers' sport cats are so good, they won't throw up a CEL.  :innocent:

--- End quote ---

didnt get CEL with miltek sports cat but did with de - Cat

vRS_Pagey:

--- Quote from: Tfsi_Mike on October 05, 2011, 09:47:15 pm ---
--- Quote from: vRS_Pagey on October 05, 2011, 09:43:26 pm ---All the downpipes I have seen (sport cat types anyway) have had holes for both pre and post cat O2 sensors, stage 2 software will right the rear one out of the equation.  But I have it on good authority that certain manufacturers' sport cats are so good, they won't throw up a CEL.  :innocent:

--- End quote ---

didnt get CEL with miltek sports cat but did with de - Cat

--- End quote ---

Dave from PDT said that the Milltek may be ok in that respect....happy days, might get mine fitted next week.  :happy2:

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