N55 midpipes vs aftermarket? - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)

nicoz · 02-04-2012, 01:13 PM

What and why? Thoughts?

Thank you

Papethova · 02-04-2012, 04:20 PM

Working on a total straight pipe now, similar to the Borlas (no cats no resonator) I had on the 135. Only difference I may up it from 2.25 to 2.5 in diameter.

Should be ready on Tuesday or Wednesday... in the meantime I am driving with NO mid pipes LOL

Franklin Joseph · 02-04-2012, 07:15 PM

N55 will be the cheapest route (without hacking the stock midpipe)

I have the berk midpipe...gives a nice rumble, not too loud.

Curious to see what your straight pipe sounds like Papethova...is it gonna be bolt on (with the stock type flange) or a slip on?

Papethova · 02-05-2012, 02:03 AM

Quote:

Originally Posted by Franklin Joseph

Curious to see what your straight pipe sounds like Papethova...is it gonna be bolt on (with the stock type flange) or a slip on?

Bolt on to replace the OEM perfectly and easily. I am having a jig made so I can replicate it for anyone who would like one.

My Borlas on the 135 were straight pipes, very similar to these, and I loved the sound and power gains. They however wont bolt right in and up to the stock muffler... or in my case potentially an Akra slip on.

cooler2442 · 02-05-2012, 02:07 AM

Aftermarket mid pipes will sound better than the N55 one. I have a Berk full straight pipe with midpipes while my friend has just the berk straight pipe exhaust and N55 midpipe. His car sounds like a trucker while mine sounds much deeper / more aggressive. This is on an N55 engine but it still shows an example of what different mid pipes do.

MDORPHN · 02-05-2012, 11:04 AM

Can't comment on the aftermarket pieces, but I'm running the N55 midpipe. Deeper exhaust note with occasional "burble" and drone almost altogether eliminated.

Neil

Papethova · 02-05-2012, 11:29 AM

Anyone know how much the material matters? Is sound going to be different with aluminized vs stainless vs Ti?

Im also thinking about going to 2.5s instead of 2.25s anyone with experience on that (as far power gains or losses)?

Franklin Joseph · 02-05-2012, 12:38 PM

materials = cost...depends on what price point you want to be in.

any thoughts of going with a Y from downpipe to a single pipe? maybe oval pipe? (assuming it will lower the weight)

Papethova · 02-05-2012, 11:04 PM

Quote:

Originally Posted by Franklin Joseph

materials = cost...depends on what price point you want to be in.

any thoughts of going with a Y from downpipe to a single pipe? maybe oval pipe? (assuming it will lower the weight)

precisely why I was asking.... I dont want to spend extra $$ on this project to just save a few pounds because I think an Akra is in the immediate future for me. However if it will impact the sound I will consider it.

As far as the Y near the DPs... well to get the volume (3 dimensional space not decibals) of two 2.5 diameter pipes I would need a single 3.75 inch pipe. I dont know how easily that will fit in the space. I dont want to stray from the round piping because I dont know how that affects turbulence and flow. If you or anyone has expertise in the area and can show me the benefits of it I will consider it.

There is significant weight saved between the OEM mid pipe and these, but yes there are a few pounds that can still be saved by going with a different material (Ti) or single larger pipe. I just dont know if the $$ or trouble is worth it for those last few pounds, especially as I said an Akra is most likely right around the corner.

nicoz · 02-05-2012, 11:28 PM

Quote:

Originally Posted by Papethova

Bolt on to replace the OEM perfectly and easily. I am having a jig made so I can replicate it for anyone who would like one.

Let me know about these when they're done.

Still can't decide between N55 midpipes (cheapest), aftermarket (best sound I guess)... and now your straight midpipes.

BTW do midpipes with or without res throw CEL?

Thanks again for your help guys

Papethova · 02-05-2012, 11:33 PM

Quote:

Originally Posted by nicoz

Let me know about these when they're done.

Still can't decide between N55 midpipes (cheapest), aftermarket (best sound I guess)... and now your straight midpipes.

BTW do midpipes with or without res throw CEL?

Thanks again for your help guys

I should have something by weeks end.

They will not throw a CEL. Just remove 4 nuts and 3 bolts, swap the gasket to the straights and re-tighten the 4 nuts and 3 bolts. You do need to remove 6 bolts to remove a brace too.

If they sound anything like the borla straights did on my 135 I will be beyond happy. The Borla doesnt swap out with the OEM because it doesnt Y at the end. Closest ones available would be what meisterschaft has.

Franklin Joseph · 02-05-2012, 11:33 PM

No CEL with midpipes. Both sets of O2 sensors are on the downpipe.

nicoz · 02-06-2012, 08:27 PM

Ok thanks.

Keep us posted!

EINSER M · 02-07-2012, 04:16 AM

Quote:

Originally Posted by Papethova

I should have something by weeks end.

They will not throw a CEL. Just remove 4 nuts and 3 bolts, swap the gasket to the straights and re-tighten the 4 nuts and 3 bolts. You do need to remove 6 bolts to remove a brace too.

If they sound anything like the borla straights did on my 135 I will be beyond happy. The Borla doesnt swap out with the OEM because it doesnt Y at the end. Closest ones available would be what meisterschaft has.

i better be the first one you call after youve got them installed

Papethova · 02-07-2012, 11:24 AM

Quote:

Originally Posted by EINSER M

i better be the first one you call after youve got them installed

You might have to wait a little longer. Im confused about something...

My calculations show the volume for two 2.25s to equal one 3.375. Trying to determine why someone would make a dual 2.5 since the bottle neck for the 2.25s was and is the 3 inch pipe connecting the Y to the muffler.

Fundahl · 02-07-2012, 11:42 AM

What do you guys think about resonated vs non-resonated? I'm not too concerned about drone, I have some unmuffled catless vehicles.

I just want whatever sounds most "mean" or "raw". Not "farty" or "buzzy".

nicoz · 02-07-2012, 11:28 PM

Should be around 3.25...

Ian///M · 02-09-2012, 04:06 PM

I have MadDad mids which will be fitting in a few weeks

nicoz · 02-09-2012, 05:45 PM

Quote:

Originally Posted by ianf

I have MadDad mids which will be fitting in a few weeks

Where did you buy those... and how much.. if you don't mind!?

Thanks

Ian///M · 02-09-2012, 05:49 PM

Quote:

Originally Posted by nicoz

Where did you buy those... and how much.. if you don't mind!?

Thanks

From Harold @ HPA. They are on his website...http://hpashop.com/MadDad-EuroSport-...midpipe-1m.htm ....great quality pipes and supposed to be better than Berk.

or here: http://www.daddysscp.com/product_p/md135mp.htm

nicoz · 02-11-2012, 09:44 AM

Quote:

Originally Posted by Papethova

You might have to wait a little longer. Im confused about something...

My calculations show the volume for two 2.25s to equal one 3.375. Trying to determine why someone would make a dual 2.5 since the bottle neck for the 2.25s was and is the 3 inch pipe connecting the Y to the muffler.

Any news?

Papethova · 02-11-2012, 02:35 PM

Quote:

Originally Posted by nicoz

Any news?

It became cost prohibitive. Also, I couldnt decide what really needed to be done... 2.25s vs 2.5s, totally straight with no cats or resonator vs resonator like the maddad or N55 pipes.

I am looking at different options now, if anything develops I will provide updates.

02-04-2012, 01:13 PM	#1
nicoz Private First Class Drives: 1M Join Date: May 2011 Location: Montreal Posts: 108 iTrader: (0)	N55 midpipes vs aftermarket? What and why? Thoughts? Thank you
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02-05-2012, 02:07 AM	#5
cooler2442 Brigadier General Drives: '11 135 Sport DCT Join Date: Apr 2011 Location: The Valley, Los Angeles Posts: 3,227 iTrader: (5)	Aftermarket mid pipes will sound better than the N55 one. I have a Berk full straight pipe with midpipes while my friend has just the berk straight pipe exhaust and N55 midpipe. His car sounds like a trucker while mine sounds much deeper / more aggressive. This is on an N55 engine but it still shows an example of what different mid pipes do. __________________

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02-04-2012, 04:20 PM	#2
Papethova Colonel Drives: '08 135/ '11 1M Join Date: Oct 2007 Location: at Death Valley 127 Posts: 2,865 iTrader: (0)	Working on a total straight pipe now, similar to the Borlas (no cats no resonator) I had on the 135. Only difference I may up it from 2.25 to 2.5 in diameter. Should be ready on Tuesday or Wednesday... in the meantime I am driving with NO mid pipes LOL

02-04-2012, 07:15 PM	#3
Franklin Joseph Captain Drives: X5 - MCS - M3 Join Date: Aug 2007 Location: Houston, TX Posts: 749 iTrader: (1)	N55 will be the cheapest route (without hacking the stock midpipe) I have the berk midpipe...gives a nice rumble, not too loud. Curious to see what your straight pipe sounds like Papethova...is it gonna be bolt on (with the stock type flange) or a slip on?

02-05-2012, 11:04 AM	#6
MDORPHN Lieutenant Colonel Drives: AW 1M Join Date: Oct 2010 Location: Wash, DC Posts: 1,833 iTrader: (0)	Can't comment on the aftermarket pieces, but I'm running the N55 midpipe. Deeper exhaust note with occasional "burble" and drone almost altogether eliminated. Neil

02-05-2012, 11:29 AM	#7
Papethova Colonel Drives: '08 135/ '11 1M Join Date: Oct 2007 Location: at Death Valley 127 Posts: 2,865 iTrader: (0)	Anyone know how much the material matters? Is sound going to be different with aluminized vs stainless vs Ti? Im also thinking about going to 2.5s instead of 2.25s anyone with experience on that (as far power gains or losses)?

02-05-2012, 12:38 PM	#8
Franklin Joseph Captain Drives: X5 - MCS - M3 Join Date: Aug 2007 Location: Houston, TX Posts: 749 iTrader: (1)	materials = cost...depends on what price point you want to be in. any thoughts of going with a Y from downpipe to a single pipe? maybe oval pipe? (assuming it will lower the weight)

02-05-2012, 11:33 PM	#12
Franklin Joseph Captain Drives: X5 - MCS - M3 Join Date: Aug 2007 Location: Houston, TX Posts: 749 iTrader: (1)	No CEL with midpipes. Both sets of O2 sensors are on the downpipe.

02-06-2012, 08:27 PM	#13
nicoz Private First Class Drives: 1M Join Date: May 2011 Location: Montreal Posts: 108 iTrader: (0)	Ok thanks. Keep us posted!

02-07-2012, 11:42 AM	#16
Fundahl Captain Drives: VO 1M, 300zx TT Join Date: Mar 2011 Location: Corpus Christi, Texas Posts: 705 iTrader: (0)	What do you guys think about resonated vs non-resonated? I'm not too concerned about drone, I have some unmuffled catless vehicles. I just want whatever sounds most "mean" or "raw". Not "farty" or "buzzy".

02-07-2012, 11:28 PM	#17
nicoz Private First Class Drives: 1M Join Date: May 2011 Location: Montreal Posts: 108 iTrader: (0)	Should be around 3.25...

02-09-2012, 04:06 PM	#18
Ian///M Brigadier General Drives: 1M E82 Join Date: Mar 2011 Location: Oz Posts: 4,609 iTrader: (0)	I have MadDad mids which will be fitting in a few weeks