can i just have my downpipe and straight pipe welded togethe

[Guest]

i had my bmw shop put on my downpipes.. and they connected it to the straight pipes with flanges (i dont have a cat)
but it keeps rattling in that spot and they have tightened it like 3 times. Would there be any reason against just welding them together?

[Madhungarian]

Sounds like they made it too long. I would not weld it together, but it can be done.

Wish I could find a shop that would make me a straight thru pipe. I went to this shop, he would not do it!
I am running an 061 ecu and the cat will burn to crap unless I replace it.
Isthe Fahey track pipe a dirrect couple to an OEM back end?

[Guest]

well they didnt make the pipe, another shop put a pipe in place of the cat with my old downpipes, then new downpipes were put in for the old ones, so its the same length as before