Quote:
Originally Posted by dcaron9999
Lots of good info in this thread!
Preparing to install a DP on a Cobb/PTF custom e-tuned N55-based 2011 135i.
Living in Quebec, Canada, were there are no emission laws yet. Other Canadian provinces do...
Even with my Province's "privilege", I was considering spacers as I would prefer to not generate CEL codes, even if Cobb AP + BMS JB4 tuners manage/auto-clear these codes.
I will avoid the spacer on the secondary O2 sensor on my N55 engine, now that I read though this thread ...
On a somewhat different note, any good or bad experiences with the new N54tuning.com "Performance Line" N55 Downpipe? A DP is a DP, just an empty pipe, so why spend too much money on them, correct?
http://www.1addicts.com/forums/showthread.php?t=1000304 |
dont install ANY spacer...1st 02 sensor or 2nd 02 sensor...youll end up with MORE codes on the car than just running it catless without a tune...
what i did, and still do, is run a BMS CAN-tool (they dont make them anymore, so look on the for sale forums) and run it on auto-clear for the DP CEL light. it also can hi jack the gauges and stuff for boost and IAT and other stuff...but it is not a tune. just gets rid of the cel.
again, a spacer will create MORE problems. just running it catless will just throw a code that says "lean bank etc." which is harmless...a spacer, as i have just figured out via trial and error, will throw off A LOT of things like a/f ratio, 02 ratio, etc.
the car with the catless dp never had issues. it ran rich which is good for turbo cars anyways.
with the spacer it ran SUPER lean, even though, it wasnt actually running lean...and stalled out a lot, etc.