Survey - X-pipe owners and SES - The Unofficial BMW M5 Messageboard (m5board.com)

Lawaia · 19th November 2006, 04:43

Spent a significant amount of time searching this subject and only had found several members complaining about the SES light AFTER installing the X-pipe. I gotta believe that there's a bunch of us with the X-pipe that haven't experienced the SES phenomenon. I'm about to get mine installed and would hate to have to deal with this. So far I know XRAyMD, EM 5, TiSiBeast and Mottati(?) have run into this...anyone else? Or is this a really rare occurrence and something I shouldn't be too concerned about? Any input appreciated.
Randy

mishkinm5 · 19th November 2006, 04:53

No ses here.

Mike

doug · 19th November 2006, 05:10

I have the SS cat back, and have never had it cause an SES.

THRILOS5 · 19th November 2006, 06:33

SS x pipe & Scorpion exhaust no SES

Jon@TheMShop · 19th November 2006, 07:13

Check the faults first. If you get catalytic efficiency faults then it's most likely an exhaust leak from the connecting points of the X pipe.

You could eliminate the problem with software from D/A or Powerchips.

EM 5 · 19th November 2006, 07:14

My tech says the SES is unrelated to the x pipe. So, we will see next week. I also had the AFE filters installed at same time and am asking the tech to check the MAF sensors.

mottati · 19th November 2006, 09:26

i never had an ses light with the x pipe, at least not consistantly. I had a couple of 'cat efficiency' codes here and there, possibly related. I ran the x pipe for a couple of years with no real issues.

The x pipe will speed up the flow of exhaust gasses thru the cats, so if the cats are marginal, you may get a cat efficiency code. As jon above mentioned there is software to reduce the sensitivity of the post cat o2 sensors which eliminates this issue if it were to come up.
Mike

divere · 19th November 2006, 11:54

no ses light here and love the sound

Lawaia · 19th November 2006, 12:50

Thanks for the replies.....you guys are the best!! Puts my mind at ease to get the exhaust installed now. Will make certain that there are NO leaks Jon.

minted_aye · 19th November 2006, 13:29

No ses here