Quote:
Originally Posted by MDORPHN
Correct. It's replacement of the downpipes, not the mid-pipes, that would trigger error codes.
Also agree that the stock N55 midpipe is far less likely to attract unwanted attention by a dealer.
Neil
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You're right, mea culpa
Ya'll were saying mid pipes but the brain was thinking down pipes. So the N55 midpipes are catless and there are no O2 sensors that need to be connected to secondary cats in our cars. What's the cost of a set of N55 pipes?
I wonder what would be more effective in reducing backpressure, a set of 3" catless down pipes or N55 (or sim) midpipes? Wouldn't be able to do both and still pass emissions. Not having to jigger with fooling the car into thinking the downpipe cats are there is def. an advantage to the midpipe route.
Oh, and I think I have all this right now. If I'm off base someome edjumicate me please!