Quote:
Originally Posted by Roffle Waffle
I'm picking up the headers tomorrow, I haven't installed them yet. Does the euro coding require a relocation of the sensors?
Right now I'm either considering:
Paying someone to install the headers and relocate the sensors
OR
Installing the headers myself, keeping the sensors stock, and getting an ess tune (some money saved from install will help with funding)
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On my E46 M3 I recently installed Euro headers and OEM Euro section 1 cats. The post-cat O2s need to reach section 1. On the E46 at least, it wasn't too difficult to relocate the sensors. There was more than enough slack in the wiring. Not sure about the Z4M.
I'm not sure how you would keep the sensors stock though. The Euro headers only have bungs for the pre-cat O2s. If you don't intend to relocate the post-cats, you'd have to either run O2 simulators or run a tune that simply ignores catalytic converter errors (which would cause you to fail emissions anyway). I think there's another euro DME flash that disables the OBD monitoring altogether, much like other aftermarket tunes... I haven't tested it on any car though.