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Originally Posted by jbeemer13
R33 and MR Clean - Question for you guys on the ER catless downpipe. Did it cause any error codes to come up after installation? Also since its catless was the exhaust fumes more noticeable from inside the car? Heard that it could be. I have had suggestions of getting a catted downpipe instead. Not sure about how that effects the exhaust flow and hp.
Has anyone out there heard of AR design downpipes? Wanted to get input on that one as well.
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I had catless on my 528 and it does trigger CEL. I have to use BMS JB4 Stage 2 to get it cleared.
As far as the smell, unless you open up the window, you will not smell it.
Performance wise, catless always better.
And AR design, it just another brand. Quality wise it is not far different, looks wise, it looks like a better, cleaner product when it is new out of the box.
Once installed, it gives you the same performance and will look the same.
It is personal preferrence IMO.
The same as purchasing T-shirt from GAP or Burberry. Both still functioned the same and will be looks and smell the same after being used.