Do I need a tune for Downpipe

abirmaher · 12-09-2013, 12:58 AM

Hi All,

This may be a stupid question but since I don't know i figure this is the place to ask. I have a 2011 N55 135i w/ dct. I have a BMW PPK1 on it now and am going to be putting a down pipe on it. I heard somewhere that if I don't have a tune that is tuning the car basically with that down pipe in mind I'm doing to run into issues. Can anyone shed some light on this for me?

Thanks in advance.

Nugget · 12-09-2013, 02:58 AM

You don't need one but you won't get the full benefit without one.

Curare86 · 12-09-2013, 04:00 AM

Quote:

Originally Posted by Nugget

You don't need one but you won't get the full benefit without one.

also, hi-flo catted or c@less? catless will give you codes without a tune

abirmaher · 12-09-2013, 07:16 AM

Catless. I don't mind a code, I can clear that with my can tool when necessary but I just want to make sure I won't run into trouble running the downpipe with just the PPK.

Nugget · 12-09-2013, 07:38 AM

I've been running a down pipe with no tune for the last 3 months. I only throw a code every couple of weeks and it takes 10 seconds to clear it with my P3 gauge.

abirmaher · 12-09-2013, 08:48 AM

Ok. I'm sure you would get more gains with a tune but do you feel gains?

Kgolf31 · 12-09-2013, 08:51 AM

Quote:

Originally Posted by abirmaher

Ok. I'm sure you would get more gains with a tune but do you feel gains?

Yes, you'll feel gains.

IMO, if you're going to spend the money for a DP you mine as well save a little bit more for a tune. You'll be able to correctly have the correct Air to Fuel mix ratio and not run into codes or perhaps other issues that could give you more serious issues...although rare.

Getting a tune, and keeping the boost at stock level, you will make more power. It is the nature of a downpipe.

Just $0.02

mike@x-ph.com · 12-10-2013, 11:41 AM

Quote:

Originally Posted by Kgolf31

Yes, you'll feel gains.

IMO, if you're going to spend the money for a DP you mine as well save a little bit more for a tune. You'll be able to correctly have the correct Air to Fuel mix ratio and not run into codes or perhaps other issues that could give you more serious issues...although rare.

Getting a tune, and keeping the boost at stock level, you will make more power. It is the nature of a downpipe.

Just $0.02

+1

alexc93 · 12-10-2013, 02:19 PM

Tune it. I ran a catless downpipe for a couple months with no tune, the car idled like crap, sometimes so bad that it would just stall out sitting at a light.

I have my stock downpipe in now until i get a tune.

abirmaher · 12-10-2013, 03:28 PM

Ended up going for a JB4, its in the mail haha

12-09-2013, 12:58 AM	#1
abirmaher Colonel 840 Rep 2,363 Posts Drives: 2018 BMW M2 & 2024 BMW X1 M35i Join Date: Feb 2010 Location: Fort Lauderdale, FL iTrader: (14) Garage List [0.00] 2018 BMW M2 [10.00]	Do I need a tune for Downpipe Hi All, This may be a stupid question but since I don't know i figure this is the place to ask. I have a 2011 N55 135i w/ dct. I have a BMW PPK1 on it now and am going to be putting a down pipe on it. I heard somewhere that if I don't have a tune that is tuning the car basically with that down pipe in mind I'm doing to run into issues. Can anyone shed some light on this for me? Thanks in advance. __________________ Follow my builds: The Racecar (2018 M2 - M0010): Build Thread \| @_m0010 The Daily (2024 X1 M35i - X001M35):Build Thread \| @_x001m35
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12-09-2013, 02:58 AM	#2
Nugget Colonel 650 Rep 2,601 Posts Drives: G81 M3 Touring, GR Supra GTS Join Date: Jan 2012 Location: Perth iTrader: (2) Garage List 2011 BMW 135i [10.00]	You don't need one but you won't get the full benefit without one.
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12-09-2013, 07:16 AM	#4
abirmaher Colonel 840 Rep 2,363 Posts Drives: 2018 BMW M2 & 2024 BMW X1 M35i Join Date: Feb 2010 Location: Fort Lauderdale, FL iTrader: (14) Garage List [0.00] 2018 BMW M2 [10.00]	Catless. I don't mind a code, I can clear that with my can tool when necessary but I just want to make sure I won't run into trouble running the downpipe with just the PPK. __________________ Follow my builds: The Racecar (2018 M2 - M0010): Build Thread \| @_m0010 The Daily (2024 X1 M35i - X001M35):Build Thread \| @_x001m35
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12-09-2013, 07:38 AM	#5
Nugget Colonel 650 Rep 2,601 Posts Drives: G81 M3 Touring, GR Supra GTS Join Date: Jan 2012 Location: Perth iTrader: (2) Garage List 2011 BMW 135i [10.00]	I've been running a down pipe with no tune for the last 3 months. I only throw a code every couple of weeks and it takes 10 seconds to clear it with my P3 gauge.
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12-09-2013, 08:48 AM	#6
abirmaher Colonel 840 Rep 2,363 Posts Drives: 2018 BMW M2 & 2024 BMW X1 M35i Join Date: Feb 2010 Location: Fort Lauderdale, FL iTrader: (14) Garage List [0.00] 2018 BMW M2 [10.00]	Ok. I'm sure you would get more gains with a tune but do you feel gains? __________________ Follow my builds: The Racecar (2018 M2 - M0010): Build Thread \| @_m0010 The Daily (2024 X1 M35i - X001M35):Build Thread \| @_x001m35
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12-10-2013, 02:19 PM	#9
alexc93 Colonel 381 Rep 2,384 Posts Drives: na Join Date: Nov 2009 Location: na iTrader: (8)	Tune it. I ran a catless downpipe for a couple months with no tune, the car idled like crap, sometimes so bad that it would just stall out sitting at a light. I have my stock downpipe in now until i get a tune.
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12-10-2013, 03:28 PM	#10
abirmaher Colonel 840 Rep 2,363 Posts Drives: 2018 BMW M2 & 2024 BMW X1 M35i Join Date: Feb 2010 Location: Fort Lauderdale, FL iTrader: (14) Garage List [0.00] 2018 BMW M2 [10.00]	Ended up going for a JB4, its in the mail haha __________________ Follow my builds: The Racecar (2018 M2 - M0010): Build Thread \| @_m0010 The Daily (2024 X1 M35i - X001M35):Build Thread \| @_x001m35
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