3" Downpipes

[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. 

[Tfsi_Mike]

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. 

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

[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. 

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

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

[E30Dom]

SO both sensors are fitted and the revo should delete the rear one through coding?

[heavyd]

I had no CEL light with my  milltek sports cat on stock or stage 1 maps

[vRS_Pagey]

SO both sensors are fitted and the revo should delete the rear one through coding?

That about covers it......