MPG tanked after catted VRSF DP?

hotchicken · 09-27-2018, 04:51 PM

I have a 2012 135i, N55. I had my VRSF catted DP installed 2 weeks ago. My MPG stinks now. Anyone have the same experience? I went from ~20-21 MPG TO 17-18, sow down nearly 15%.

Have not had my foot in it, I promise!

YearOneOne · 09-27-2018, 07:17 PM

Quote:

Originally Posted by hotchicken

Had my VRSF catted DP installed 2 weeks ago. My MPG stinks now. Anyone have the same experience? I went from ~20-21 MPG TO 17-18, sow down nearly 15%.

Have not had my foot in it, I promise!

This is alot of people for some reason. I went from 23 to 21 which is also alot of people. I don't understand

hotchicken · 09-28-2018, 03:09 PM

Quote:

Originally Posted by YearOneOne

This is alot of people for some reason. I went from 23 to 21 which is also alot of people. I don't understand

Sad face.

YearOneOne · 09-28-2018, 04:05 PM

N54?

Soterios · 09-29-2018, 11:53 AM

Just spitballing, but : Less restriction = spooling sooner = boost at lower rpms = more fuel used even at normal cruising speeds and throttle positions. I assume you're running a new tune, also?

15% seems extreme, but who knows.

hotchicken · 09-30-2018, 06:13 PM

Quote:

Originally Posted by YearOneOne

N54?

Sorry, 2012 so N55.

hotchicken · 09-30-2018, 06:13 PM

Quote:

Originally Posted by Soterios

Just spitballing, but : Less restriction = spooling sooner = boost at lower rpms = more fuel used even at normal cruising speeds and throttle positions. I assume you're running a new tune, also?

15% seems extreme, but who knows.

Has always had the BMW PPK but that’s all. May try MHD.

Soterios · 09-30-2018, 08:39 PM

Quote:

Originally Posted by hotchicken

Has always had the BMW PPK but that’s all. May try MHD.

I've never actually measured my gas mileage. I'll check next tank. I'm COBB Stage 2+ with the intercooler/downpipe/charge pipes/intake etc.

09-27-2018, 04:51 PM	#1
hotchicken Second Lieutenant 47 Rep 246 Posts Drives: 2016 M235ix Join Date: Jun 2015 Location: Tennessee iTrader: (2)	MPG tanked after catted VRSF DP? I have a 2012 135i, N55. I had my VRSF catted DP installed 2 weeks ago. My MPG stinks now. Anyone have the same experience? I went from ~20-21 MPG TO 17-18, sow down nearly 15%. Have not had my foot in it, I promise! Last edited by hotchicken; 09-30-2018 at 06:12 PM..
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09-28-2018, 04:05 PM	#4
YearOneOne Captain 361 Rep 727 Posts Drives: 13 135i mineral grey Join Date: Jun 2016 Location: Maryland iTrader: (1)	N54?
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09-29-2018, 11:53 AM	#5
Soterios BXR 575 Rep 636 Posts Drives: 2012 135i Join Date: Jun 2018 Location: Missouri iTrader: (0)	Just spitballing, but : Less restriction = spooling sooner = boost at lower rpms = more fuel used even at normal cruising speeds and throttle positions. I assume you're running a new tune, also? 15% seems extreme, but who knows. __________________ 2012 135i M Sport Alpine White
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