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      02-09-2017, 07:51 PM   #1
adisz
Private First Class
United_States
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Drives: 2023 BMW M3
Join Date: Feb 2016
Location: NY

iTrader: (0)

After installing a vrsp downpipe I have noticed a rough idle when the car is in sport plus mode.
The revs stay put on the tach but there is a pulse in the idle.
I had a shop look at it and everything was installed correct, no leaks and o2 sensors are fine. Anyone else experiencing this? Only mod is the downpipe.
Appreciate 0