None of the above. The cat sections already have their collectors upstream, so it will simply be a case of routing the twin pipes through a resonator, smaller muffler, and out.
Good news! The car started with the S62 for the first time today...had a dying starter and crossed fuel lines to blame.
https://www.youtube.com/watch?v=WIDsui1uOi4
Hurrah! But that video is disappointingly short. Sounds fantastic for about 1 second.
X-pipe would go after the cats. In the E39 M5 it's an H-pipe between the cats and the resonator.
Last edited by moroza; 07-06-2018 at 04:34 AM.
Exhaust is almost done.
Need to sort out the ASC. I'd like to retain the braking part, but there obviously is no throttle plate anymore. Can it be reprogrammed to work just on that? I only have the fault light currently.
Exhaust is finished. A little loud for my taste, but it might grow on me.
Bigger problem is that after a 10min drive, the BRAND NEW E34 M5 coolant tank developed several leaks where the cap neck meets the main body. Of all the things with this swap that could break, it had to be the one thing I have not modded or bodged. Great.
Did you ever try to make the M5 cluster work?
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