Quote:
Originally Posted by MRMIAGI
Oh gotcha. Well I know the valves purpose is to warm up the catalytic converter. It closes at first I warm it up and then opens after. I just unplugged the valve on my 228i so it's permanently open.
As far as modifying it you might be able to do an exhaust cutout and then do a y pipe off of their to control it with the stock valve. If you have a Jb4 you can control the valve opening/closing. Seems like a lot of work tho IMO.
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Are there known issues of always leaving the valve opened, say during cold weather? All I have read is it will introduce a little bit drone on low RPM range.