Fabricated Downpipes ? - BMW 3-Series (E90 E92) Forum

hogbmw · 08-20-2012, 01:24 AM

Stop me if this is a stupid idea. But I've seen many downpipes on this forum sell for $600-$800 used.. The ebay ones are like $400. I was wondering if anyones just taken there current downpipe to an exhaust shop, and just had them cut out the cats and replace it with straight pipes. When I got muffler work on my old 328 it was $40 I think for installation of the pipes, and that was it. I was thinking about buying some used pipes from someone on here and just taking them to the shop to have them fabricate new ones. Hell, maybe they'd even fabricate whole new ones. I saw on a website where they just sell the ring that goes into the turbo housing for like $80 im wanting to say. Has anyone had this done? Am I missing something in this? Only disadvantage I can think of is that you'd have to run factory 2.5" I'm wanting to say.

Thanks ya'll for the help!

Bme30 · 08-20-2012, 01:27 AM

VRSF downpipes are 400 new and they are 3 inch and life time warranty this equals a no brainer.

NiVeDh · 08-20-2012, 01:34 AM

It has been done before: http://www.e90post.com/forums/showthread.php?t=451224

hogbmw · 08-20-2012, 02:38 AM

Quote:

Originally Posted by NiVeDh

It has been done before: http://www.e90post.com/forums/showthread.php?t=451224

My bad, I searched for it on both google and e90 post. I am very interested in doing this, will probably go up to muffler shop and do this soon. Depending on prices.

JDrillingJ · 08-20-2012, 07:27 AM

Quote:

Originally Posted by hogbmw

My bad, I searched for it on both google and e90 post. I am very interested in doing this, will probably go up to muffler shop and do this soon. Depending on prices.

I researched this as well and had my local guy quote me a couple hours to do this. He was planning on cutting stock dps shortly after the stock flanges so the stock gaskets and hardware wouldn't be disturbed.

I was all lined up to go this way until I noticed on the other forum BMS has their new 3" DPS done.....I was one of the first 10 to get a set. They are being delivered today!

Due to the relatively small price difference between the two options, I'm glad I will be able to retain my stock dps in case of resale, etc.

WPS!

JDJ

Jeff@TopGearSolutions · 08-20-2012, 11:46 AM

VRSF, CP-e, AA

Priced from low to high.
Save yourself the head ache OP.

joec500 · 08-20-2012, 12:04 PM

Quote:

Originally Posted by Jeff@topgearsolutions

VRSF, CP-e, AA

Priced from low to high.
Save yourself the head ache OP.

Agreed, and if you ever need to pass emissions (if your state requires a sniffer) It's great to have some cat's on hand.

benzy89 · 08-20-2012, 12:25 PM

+1, keep the OEMs for emergency emissions testing

Had no idea that BMS was making N54 DPs, but they look identical to the VRSF's but for ~$60 less

Jon335iFL · 08-20-2012, 12:28 PM

it was done when the raceland vs AR dp's was going on ( ya ive been here a while lol).

Ever since PLM and VRSF came along its so much more simple to just buy those.

hogbmw · 08-20-2012, 02:14 PM

Quote:

Originally Posted by JDrillingJ

I researched this as well and had my local guy quote me a couple hours to do this. He was planning on cutting stock dps shortly after the stock flanges so the stock gaskets and hardware wouldn't be disturbed.

I was all lined up to go this way until I noticed on the other forum BMS has their new 3" DPS done.....I was one of the first 10 to get a set. They are being delivered today!

Due to the relatively small price difference between the two options, I'm glad I will be able to retain my stock dps in case of resale, etc.

WPS!

JDJ

Good to see another ar member on here! haha i thought i was the only one.

That was my plan though to buy an extra pair of someone here. Thanks for the info on the BMS DP tho.. $370 aint bad at all. I'm still gonna get a quote from the shop soon once i get around to it.

JamesM3M5 · 08-20-2012, 02:25 PM

I'd buy pre-made DPs versus cutting up your stockers. Cheaper, easier, better fitment, and you can put the stockers back on if you a) sell the car or b) need to pass emissions for any reason (for instance if you move).

cstavaru · 08-20-2012, 03:14 PM

Quote:

Originally Posted by hogbmw

Stop me if this is a stupid idea. But I've seen many downpipes on this forum sell for $600-$800 used.. The ebay ones are like $400. I was wondering if anyones just taken there current downpipe to an exhaust shop, and just had them cut out the cats and replace it with straight pipes.

Yes I've done it:

http://www.e90post.com/forums/showthread.php?t=451224

But I eventually replaced them with Macht Schnells, thinking that these would be better. The performance is the same, I now believe.

Zebra99 · 08-20-2012, 08:23 PM

Get the BMS DP's. $329 intro price and shipping is usually free/cheap for you US guys.

So unfair that you guys get all the kool shit lol.

08-20-2012, 01:24 AM	#1
hogbmw Private First Class Drives: '07 BMW 328i Join Date: Jul 2011 Location: Fayetteville, AR Posts: 160 iTrader: (0)	Fabricated Downpipes ? Stop me if this is a stupid idea. But I've seen many downpipes on this forum sell for $600-$800 used.. The ebay ones are like $400. I was wondering if anyones just taken there current downpipe to an exhaust shop, and just had them cut out the cats and replace it with straight pipes. When I got muffler work on my old 328 it was $40 I think for installation of the pipes, and that was it. I was thinking about buying some used pipes from someone on here and just taking them to the shop to have them fabricate new ones. Hell, maybe they'd even fabricate whole new ones. I saw on a website where they just sell the ring that goes into the turbo housing for like $80 im wanting to say. Has anyone had this done? Am I missing something in this? Only disadvantage I can think of is that you'd have to run factory 2.5" I'm wanting to say. Thanks ya'll for the help! __________________ '07 328i-Saphire Black Murdeerrrrred-gone '08 335i-Black on Gold.. work in progress!-JB3-DCI
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08-20-2012, 11:46 AM	#6
Jeff@TopGearSolutions BimmerPost Supporting Vendor Drives: C6 Z06, GSXR-750, 09 335i Join Date: Dec 2008 Location: TopGearSolutions.com Posts: 12,479 iTrader: (25)	VRSF, CP-e, AA Priced from low to high. Save yourself the head ache OP. __________________ Latest Discounts and Specials Email Me! Jeff@TopGearSolutions.Com Evolution Racewerks Charge Pipes and FMIC Sale ETS FMIC INTERCOOLER SALE! Cobb AP for BMW N54 & N55, Lowest Price! MEMORIAL DAY DISCOUNTS!!

08-20-2012, 12:28 PM	#9
Jon335iFL Brigadier General Drives: This-----------> Join Date: Feb 2009 Location: Jrz :) Posts: 4,813 iTrader: (14)	it was done when the raceland vs AR dp's was going on ( ya ive been here a while lol). Ever since PLM and VRSF came along its so much more simple to just buy those. __________________ .

08-20-2012, 02:25 PM	#11
JamesM3M5 Some dude Drives: E28 M5, E92 335i Join Date: Sep 2011 Location: Northern VA Posts: 1,569 iTrader: (0)	I'd buy pre-made DPs versus cutting up your stockers. Cheaper, easier, better fitment, and you can put the stockers back on if you a) sell the car or b) need to pass emissions for any reason (for instance if you move). __________________ RRT Racing E92 335i/6MT Dinan Stage 3 intercooler, oil cooler, intake, flash. E28 M5, R171 SLK350

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08-20-2012, 01:27 AM	#2
Bme30 Lieutenant Drives: 335i coupe Join Date: May 2010 Location: wellington Posts: 567 iTrader: (1) Garage List 2007 335i [0.00]	VRSF downpipes are 400 new and they are 3 inch and life time warranty this equals a no brainer.

08-20-2012, 01:34 AM	#3
NiVeDh Major General Drives: '08 E90 335i 6MT BSM Join Date: Apr 2009 Location: Atlanta / Lawrenceville, GA Posts: 8,020 iTrader: (131) Garage List 2008 BMW 335i Sedan [4.46]	It has been done before: http://www.e90post.com/forums/showthread.php?t=451224

08-20-2012, 12:25 PM	#8
benzy89 Banned Drives: '08 E90 335i Join Date: Jan 2012 Location: Northern NJ Posts: 2,400 iTrader: (3) Garage List 2008 BMW 335i [3.75]	+1, keep the OEMs for emergency emissions testing Had no idea that BMS was making N54 DPs, but they look identical to the VRSF's but for ~$60 less

08-20-2012, 08:23 PM	#13
Zebra99 Lieutenant Colonel Drives: 2008 335i E93 Join Date: Aug 2011 Location: Ontario Posts: 1,996 iTrader: (4) Garage List 2008 BMW 335i E93 [5.00]	Get the BMS DP's. $329 intro price and shipping is usually free/cheap for you US guys. So unfair that you guys get all the kool shit lol.