Downpipes Installed

E55 Bulldog · 07-17-2019, 04:54 PM

I installed my downpipes over the weekend and now Im getting a bit of rough idle... is this normal?
Its not horrible, just a little bounce / dip while sitting at stop lights.

Whipple · 07-17-2019, 06:36 PM

No Rough Idle here , mine idles smooth as stock did you double check everything is plugged in correctly and the grounds back on the DME’s , install requires , DME grounds removed, O2 sensors to be unplugged and removed , and the PCV valves disconnected

E55 Bulldog · 07-17-2019, 07:06 PM

Quote:

Originally Posted by Whipple

No Rough Idle here , mine idles smooth as stock did you double check everything is plugged in correctly and the grounds back on the DME’s , install requires , DME grounds removed, O2 sensors to be unplugged and removed , and the PCV valves disconnected

Yeah, I did the install myself and double checked everything. I will have another look.

Whipple · 07-17-2019, 08:06 PM

Quote:

Originally Posted by E55 Bulldog

Yeah, I did the install myself and double checked everything. I will have another look.

Yeah Just double check everything,if everything looks good just give it about a tank of gas for the DME’s to adjust to the new pipes, mine actually felt a little sluggish when I first installed but ran great

Airz · 07-18-2019, 01:40 AM

If it doesn't clear up then it could be a damaged o2 sensor as they are quite brittle and don't like taking knocks.

07-17-2019, 04:54 PM	#1
E55 Bulldog Private 25 Rep 71 Posts Drives: 2014 M6 GC Join Date: Jun 2009 Location: Wilmington, NC iTrader: (0)	Downpipes Installed - rough idle? I installed my downpipes over the weekend and now Im getting a bit of rough idle... is this normal? Its not horrible, just a little bounce / dip while sitting at stop lights. __________________ 1997 HMC4 Hummer H1 2003 KSC2 Hummer H1 1969 Jaguar XKE 2014 M6 GC
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07-17-2019, 06:36 PM	#2
Whipple Lieutenant 263 Rep 582 Posts Drives: 2015 BMW M6 Gran Coupe Join Date: Jun 2011 Location: New York iTrader: (0)	No Rough Idle here , mine idles smooth as stock did you double check everything is plugged in correctly and the grounds back on the DME’s , install requires , DME grounds removed, O2 sensors to be unplugged and removed , and the PCV valves disconnected
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07-18-2019, 01:40 AM	#5
Airz Private 11 Rep 51 Posts Drives: 2015 M6 Sakhir Coupe Join Date: Jun 2014 Location: United Kingdom iTrader: (0)	If it doesn't clear up then it could be a damaged o2 sensor as they are quite brittle and don't like taking knocks.
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