Regen?

NickP · 12-10-2011, 02:41 AM

My exhaust has been sounding a little deeper when pulling away the past couple of days - I assume it\'s probably a regen occurring - any idea how long it\'s likely to go on for?

Thanks
Nick
(on a 330d)

HighlandPete · 12-10-2011, 03:26 AM

For me usually about 8 - 10 miles. Being an auto, if it is from a local start will hold the gears to keep a few more revs until I'm cruising. Also the mpg will go down (if running a short term average). All settles down after the mileage mentioned, and mpg builds again. There is a slight difference to the engine note and smoothness when running through gears, but nothing different once driving a steady speed.

If you run the coolant temperature, from the hidden menu, at the same time, you get an increase in temperature, which matches the other characteristics and mileage.

HighlandPete

12-10-2011, 02:41 AM	#1
NickP Detailing 13 Rep 440 Posts Drives: E90 330d Join Date: May 2010 Location: Essex,UK iTrader: (1)	Regen? My exhaust has been sounding a little deeper when pulling away the past couple of days - I assume it\'s probably a regen occurring - any idea how long it\'s likely to go on for? Thanks Nick (on a 330d)
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12-10-2011, 03:26 AM	#2
HighlandPete Lieutenant General 6659 Rep 15,858 Posts Drives: BMW F11 535i Touring Join Date: Mar 2007 Location: Scotland, Highland Region iTrader: (0)	For me usually about 8 - 10 miles. Being an auto, if it is from a local start will hold the gears to keep a few more revs until I'm cruising. Also the mpg will go down (if running a short term average). All settles down after the mileage mentioned, and mpg builds again. There is a slight difference to the engine note and smoothness when running through gears, but nothing different once driving a steady speed. If you run the coolant temperature, from the hidden menu, at the same time, you get an increase in temperature, which matches the other characteristics and mileage. HighlandPete
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