Is the AR 3" and the ER 4" ?? Same Power?

geared · 04-20-2015, 10:50 PM

So I am doing some research on which DP to get. I went with a AR on my 135 and thought it was truly a piece of art, and performed exceptionally. Sounded awesome.

Some q's:

Is the AR 3" and the ER 4" ?

If that is the case, how could the ER make the same power?

Assuming I am going to go downpipe + tune, and that is it (maybe run e85 once in a while) - is the 4" too much?

thanks,

TeKiZeRo · 04-21-2015, 12:24 AM

The stock snails don't flow enough air to even need 4". You might have a deeper sound form it though.

Mike@N54Tuning.com · 04-21-2015, 10:46 AM

They are both the same size (3" pipe)

Stock on Left, ER in MIDDLE and ar design on RIGHT

We've installed both sets on our M3 so if you have any questions let me know.

Mike

geared · 04-21-2015, 03:54 PM

Ok, I was trying to make sense of how similar sized they look in the picture, as I saw the picture.....THEN saw a forum vendor marketing the ER as a 4" DP....I guess their wrong.

Mike - how is the fitment on both? I saw you post that the 02's fit better on the AR, simply due to their placement. Any other thoughts?

geared · 04-21-2015, 05:29 PM

This is what confused me : http://f80.bimmerpost.com/forums/sho....php?t=1107352

Mike@N54Tuning.com · 04-21-2015, 07:10 PM

Quote:

Originally Posted by geared

Ok, I was trying to make sense of how similar sized they look in the picture, as I saw the picture.....THEN saw a forum vendor marketing the ER as a 4" DP....I guess their wrong.

Mike - how is the fitment on both? I saw you post that the 02's fit better on the AR, simply due to their placement. Any other thoughts?

They were probably confused

Fitment was perfect for both so it would be difficult to recommend one over the other as finish, welds, fit etc. were great.

Mike

tom @ eas · 04-21-2015, 07:27 PM

Quote:

Originally Posted by geared

This is what confused me : http://f80.bimmerpost.com/forums/sho....php?t=1107352

He's confusing that with N55. Evolution Downpipes are 3" diameter for S55.

geared · 04-21-2015, 07:28 PM

thank you both!

r33_RGSport · 04-22-2015, 10:03 PM

geared , thank you for the correction.

It was a copy and paste work.

04-20-2015, 10:50 PM	#1
geared Major 265 Rep 1,100 Posts Drives: 90' s54 325i ; 93' carrera 2 Join Date: Apr 2012 Location: palm beach gardens, fl iTrader: (6) Garage List 2008 Corvette z-06 [0.00] 2015 BMW m3 [10.00]	Is the AR 3" and the ER 4" ?? Same Power? So I am doing some research on which DP to get. I went with a AR on my 135 and thought it was truly a piece of art, and performed exceptionally. Sounded awesome. Some q's: Is the AR 3" and the ER 4" ? If that is the case, how could the ER make the same power? Assuming I am going to go downpipe + tune, and that is it (maybe run e85 once in a while) - is the 4" too much? thanks,
	Appreciate 0 Tweet Quote

04-21-2015, 12:24 AM	#2
TeKiZeRo First Lieutenant 108 Rep 318 Posts Drives: '15 M3, '13 GT-R, '14 MP4-12C Join Date: Mar 2014 Location: San Diego, CA iTrader: (3)	The stock snails don't flow enough air to even need 4". You might have a deeper sound form it though.
	Appreciate 1 Quote

04-21-2015, 10:46 AM	#3
Mike@N54Tuning.com Joint Chiefs of Staff 4918 Rep 115,980 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	They are both the same size (3" pipe) Stock on Left, ER in MIDDLE and ar design on RIGHT We've installed both sets on our M3 so if you have any questions let me know. Mike Attached Images
	Appreciate 0 Quote

04-21-2015, 03:54 PM	#4
geared Major 265 Rep 1,100 Posts Drives: 90' s54 325i ; 93' carrera 2 Join Date: Apr 2012 Location: palm beach gardens, fl iTrader: (6) Garage List 2008 Corvette z-06 [0.00] 2015 BMW m3 [10.00]	Ok, I was trying to make sense of how similar sized they look in the picture, as I saw the picture.....THEN saw a forum vendor marketing the ER as a 4" DP....I guess their wrong. Mike - how is the fitment on both? I saw you post that the 02's fit better on the AR, simply due to their placement. Any other thoughts?
	Appreciate 0 Quote

04-21-2015, 05:29 PM	#5
geared Major 265 Rep 1,100 Posts Drives: 90' s54 325i ; 93' carrera 2 Join Date: Apr 2012 Location: palm beach gardens, fl iTrader: (6) Garage List 2008 Corvette z-06 [0.00] 2015 BMW m3 [10.00]	This is what confused me : http://f80.bimmerpost.com/forums/sho....php?t=1107352
	Appreciate 0 Quote

04-21-2015, 07:28 PM	#8
geared Major 265 Rep 1,100 Posts Drives: 90' s54 325i ; 93' carrera 2 Join Date: Apr 2012 Location: palm beach gardens, fl iTrader: (6) Garage List 2008 Corvette z-06 [0.00] 2015 BMW m3 [10.00]	thank you both!
	Appreciate 0 Quote

04-22-2015, 10:03 PM	#9
r33_RGSport General 12971 Rep 18,716 Posts Drives: G09 XM, G05 X5 40, 991.2 T Join Date: Oct 2009 Location: So. Cal iTrader: (6)	geared , thank you for the correction. It was a copy and paste work. __________________ Email:sales@rgsport.com \| IG:RGSport_USA \| Web:RGSportShop.com PM for Everyday DEALS!! MSS • iSweep • RaceChip • Sterckenn • AutoTecknic • Akrapovic • Vossen Wheels • Eventuri Active Autowerke • KW • H&R • Ohlins • Remus • and more...
	Appreciate 0 Quote