ER downpipes, stock exhaust, no tune

BPe90M3 · 12-25-2014, 02:00 PM

So monday I installed ER downpipes on my nine stock F82. First of all the sound is amazing, especially the loud cracks when letting off the throttle. Question is, if i just run this for a while without a tune (JB4, etc), will the car really lose power from stock? It has been raining ever since Monday in the northeast so I have not been able to test the butt dyno, but curious to see how the downpipes effect an otherwise stock car.

Jay1994 · 12-25-2014, 02:02 PM

Quote:

Originally Posted by BPe90M3

So monday I installed ER downpipes on my nine stock F82. First of all the sound is amazing, especially the loud cracks when letting off the throttle. Question is, if i just run this for a while without a tune (JB4, etc), will the car really lose power from stock? It has been raining ever since Monday in the northeast so I have not been able to test the butt dyno, but curious to see how the downpipes effect an otherwise stock car.

You'll get a CEL and your ecu will adjust by limiting power to prevent damages. It's probably best to get the JB4 or the akrapovic delete r to remove the check light

BPe90M3 · 12-25-2014, 02:07 PM

Yes I got the CEL already. I hope I'm not damaging the o2 sensors are anything by not running the tune

M4LAKA · 12-25-2014, 03:11 PM

I cant find any news on how this version of the Delete-R installs. Even the vendors I talked to are clueless, looks different from past versions of it. Doesn't look like it attaches to the OBDII like the old ones.
I emailed Akrapovic, no response.

jballs16 · 12-29-2014, 04:33 AM

Where did you guys hear the ecu limits power due to the CEL? I've ran catless Downpipes on two different 335is and never had reduced power from the few times I didn't clear the CEL.

MasterC17 · 12-29-2014, 06:51 AM

Yea, I'm not sure where you guys are getting this information, but A) a CEL does not limit power, and B) you can't hurt the oxygen sensors with downpipes....

Money2536 · 12-29-2014, 10:09 AM

Get the Awron Gauge if you don't want to do a tune.

NorCal f80 · 12-29-2014, 10:24 AM

Quote:

Originally Posted by Money2536

Get the Awron Gauge if you don't want to do a tune.

Isn't a tune only good for 20hp anyways? Assuming Map 0

jc05e46m3 · 12-29-2014, 10:37 AM

Quote:

Originally Posted by 0-100 nga real quick

Isn't a tune only good for 20hp anyways? Assuming Map 0

Map 0 gets you nothing. Map 1 gets you 40-50rwhp/40-50rwtq. Map 2+ gets you even more based on mods/fuel/etc.

ixse · 12-29-2014, 10:38 AM

Quote:

Originally Posted by MasterC17

Yea, I'm not sure where you guys are getting this information, but A) a CEL does not limit power, and B) you can't hurt the oxygen sensors with downpipes....

Correct. CEL from dp is purely emissions related due to lack of cat. Ecu wont pull timing or run rich just because of dp..

NorCal f80 · 12-29-2014, 10:41 AM

Quote:

Originally Posted by jc05e46m3

Map 0 gets you nothing. Map 1 gets you 40-50rwhp/40-50rwtq. Map 2+ gets you even more based on mods/fuel/etc.

Oh ok. What fuel is map 2? Can 91 be used?

MasterC17 · 12-29-2014, 10:59 AM

Quote:

Originally Posted by 0-100 nga real quick

Oh ok. What fuel is map 2? Can 91 be used?

Map 2 is for 93 Octane. Map 3 is 91 Octane.

///M ARMY · 12-29-2014, 11:00 AM

Quote:

Originally Posted by MasterC17

Map 2 is for 93 Octane. Map 3 is 91 Octane.

You can use 91 on map 2. Map 2 is more aggressive than 1. Any other map (6,7,8) needs better octance...100, or E85

jc05e46m3 · 12-29-2014, 12:42 PM

Quote:

Originally Posted by ///M ARMY

You can use 91 on map 2. Map 2 is more aggressive than 1. Any other map (6,7,8) needs better octance...100, or E85

This.

And to further clarify-
6 is a user-adjustable boost map
7 is the race fuel map (as M ARMY pointed out)
8 is basically like Map 7, but with Meth integration.

Taimur · 12-29-2014, 01:02 PM

So to bring the topic back the original post. Are people seeing power increase by just swapping in down pipes, without any tuning?

If there is a power increase, how much is it?

MasterC17 · 12-29-2014, 01:41 PM

Quote:

Originally Posted by Taimur

So to bring the topic back the original post. Are people seeing power increase by just swapping in down pipes, without any tuning?

If there is a power increase, how much is it?

Yes, power gains are there. Not huge, but notable. Different cars have shown different gains, but there are dyno's out there.

Voodi · 12-29-2014, 11:14 PM

How you guys liking the ER/Stock Exhaust combo so far?

GOLFFRR · 12-30-2014, 06:53 AM

^^You lost power after DPs? OR did you mean to swap those numbers around? 428 stock is the highest I have seen so far I think mine was 417 stock.

jballs16 · 12-30-2014, 10:46 AM

Victor: I actually did dyno the car, quite a few times at specialty z, with Terry. My baseline was always lower than with my downpipes.

Did you dyno on the same dyno, same day?

BPe90M3 · 01-02-2015, 10:09 PM

Quote:

Originally Posted by Voodi

How you guys liking the ER/Stock Exhaust combo so far?

love it. the sound is absolutely ridiculous is a good way.

///M ARMY · 01-02-2015, 10:27 PM

Quote:

Originally Posted by BPe90M3

Quote:

Originally Posted by Voodi

How you guys liking the ER/Stock Exhaust combo so far?

love it. the sound is absolutely ridiculous is a good way.

I do agree. Not to much but sounds different.

Mike@N54Tuning.com · 01-03-2015, 08:01 AM

Quote:

Originally Posted by ixse

Correct. CEL from dp is purely emissions related due to lack of cat. Ecu wont pull timing or run rich just because of dp..

+1

Mike

12-25-2014, 02:00 PM	#1
BPe90M3 Captain 256 Rep 769 Posts Drives: 2011.75 AW e92 M3 Join Date: Oct 2011 Location: North Jersey iTrader: (2)	ER downpipes, stock exhaust, no tune So monday I installed ER downpipes on my nine stock F82. First of all the sound is amazing, especially the loud cracks when letting off the throttle. Question is, if i just run this for a while without a tune (JB4, etc), will the car really lose power from stock? It has been raining ever since Monday in the northeast so I have not been able to test the butt dyno, but curious to see how the downpipes effect an otherwise stock car.
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12-25-2014, 02:07 PM	#3
BPe90M3 Captain 256 Rep 769 Posts Drives: 2011.75 AW e92 M3 Join Date: Oct 2011 Location: North Jersey iTrader: (2)	Yes I got the CEL already. I hope I'm not damaging the o2 sensors are anything by not running the tune
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12-25-2014, 03:11 PM	#4
M4LAKA Lieutenant 114 Rep 424 Posts Drives: 2022 M5 Comp Join Date: May 2014 Location: Toronto iTrader: (0)	I cant find any news on how this version of the Delete-R installs. Even the vendors I talked to are clueless, looks different from past versions of it. Doesn't look like it attaches to the OBDII like the old ones. I emailed Akrapovic, no response. __________________ Currently: 2022 M4 Comp xDrive 2022 M5 Comp Past: 2019 M5 Comp 2015 M4
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12-29-2014, 04:33 AM	#5
jballs16 Captain 549 Rep 776 Posts Drives: ‘21 RS6, RR LWB, Raptor Join Date: Jul 2013 Location: so cal iTrader: (0)	Where did you guys hear the ecu limits power due to the CEL? I've ran catless Downpipes on two different 335is and never had reduced power from the few times I didn't clear the CEL.
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12-29-2014, 06:51 AM	#6
MasterC17 Captain 329 Rep 984 Posts Drives: 2015 BMW M3 Join Date: Aug 2014 Location: Massachusetts iTrader: (3)	Yea, I'm not sure where you guys are getting this information, but A) a CEL does not limit power, and B) you can't hurt the oxygen sensors with downpipes.... __________________ 2009 X5d \| 2007 E90 Track \| 2002 M3 Track \| 1991 535i Track
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12-29-2014, 10:09 AM	#7
Money2536 Colonel 1586 Rep 2,148 Posts Drives: '13 E92 M3 \| 992 GT3 Touring Join Date: Feb 2010 Location: The Villages, FL iTrader: (1)	Get the Awron Gauge if you don't want to do a tune.
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12-29-2014, 01:02 PM	#15
Taimur Second Lieutenant 21 Rep 270 Posts Drives: '15 M3 Join Date: May 2007 Location: Long Island, NY iTrader: (0)	So to bring the topic back the original post. Are people seeing power increase by just swapping in down pipes, without any tuning? If there is a power increase, how much is it?
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12-29-2014, 11:14 PM	#17
Voodi Private First Class 49 Rep 110 Posts Drives: 2015 AW F82 Join Date: Oct 2014 Location: L.A. iTrader: (0)	How you guys liking the ER/Stock Exhaust combo so far?
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12-30-2014, 06:53 AM	#18
GOLFFRR 10817 Rep 27,600 Posts Drives: GOLFFRR cart Join Date: Mar 2009 Location: we sell BMWs to "ALL" US states iTrader: (4)	^^You lost power after DPs? OR did you mean to swap those numbers around? 428 stock is the highest I have seen so far I think mine was 417 stock. __________________ BEFORE YOU BUY YOUR NEXT BMW, EMAIL OUR GUY KOTE FIRST! Kote M Sales:Kotem@bmwofcamarillo.com Cell:805-368-9101 vipfinance@bmwofcamarillo.com for warranties!
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12-30-2014, 10:46 AM	#19
jballs16 Captain 549 Rep 776 Posts Drives: ‘21 RS6, RR LWB, Raptor Join Date: Jul 2013 Location: so cal iTrader: (0)	Victor: I actually did dyno the car, quite a few times at specialty z, with Terry. My baseline was always lower than with my downpipes. Did you dyno on the same dyno, same day?
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