Get Downpipes!!! (Transforms the car)

hdekerme · 12-22-2014, 12:48 PM

Why?

Improves sound without being too over the top. Brings back a bit of the e46 sound. Downshifts are slightly faster and better rev matched in sport plus or it just feels that way because of the improved sound over stock. You also gain about 20WHP but that's secondary compared to the sound improvement. Stop watching the videos online, the sound is not captured well and is very deceiving...

Which Downpipe?

Choices are: Akrapovic, Eisenmann, Gitani, Racewerkz Engineering, ER

Racewerkz Engineering hands down. The work and craftsmanship of the piping and welds are perfect and the price is good too. Reach out to them for pricing and installation. They specialize in setting up racecars for the track and really take pride in their work. Located in San Dimas, CA.

JDUni1 · 12-22-2014, 01:17 PM

AR Designs also has a really nice set available

parky1215 · 12-22-2014, 01:18 PM

Nah. It stinks too much.

YMB_F80 · 12-22-2014, 01:28 PM

Quote:

Originally Posted by parky1215

Nah. It stinks too much.

its actually not that bad! It do able, now with a exhaust idk how bad its going to get haha!

GOLFFRR · 12-22-2014, 01:35 PM

its soooo loud though especially on cold starts

but agree it def make the car sound bad ass

VCP · 12-22-2014, 01:36 PM

The secondary cats work well. Smell is not bad at all. Zima Motorsports have a nice set of DP's and you can get them Ceramic coated. Under hood temp is definitely lowered with the ceramics.

Quote:

Originally Posted by parky1215

Nah. It stinks too much.

hdekerme · 12-22-2014, 01:49 PM

The secondary cats do a great job at controlling the smell...

Golfrr - Cold starts would be loud with an after market exhaust but it's actually very well balanced with the stock exhaust system.

djhex36 · 12-22-2014, 01:51 PM

Quote:

Originally Posted by hdekerme

Why?

Improves sound without being too over the top. Brings back a bit of the e46 sound. Downshifts are slightly faster and better rev matched in sport plus or it just feels that way because of the improved sound over stock. You also gain about 20WHP but that's secondary compared to the sound improvement. Stop watching the videos online, the sound is not captured well and is very deceiving...

Which Downpipe?

Choices are: Akrapovic, Eisenmann, Gitani, Racewerkz Engineering, ER

Racewerkz Engineering hands down. The work and craftsmanship of the piping and welds are perfect and the price is good too. Reach out to them for pricing and installation. They specialize in setting up racecars for the track and really take pride in their work. Located in San Dimas, CA.

Take some video of it driving away from a camera normal and hard! I'd love to hear this on a stock exhaust and not on a dyno.

NorCal f80 · 12-22-2014, 01:54 PM

So what I've learned from this thread is..........

I need to move the fuck out of a townhome complex or just don't be courteous.

Mandi90TT · 12-22-2014, 01:57 PM

Actually, we need to find out how to code out the cold start. From my understanding, it's a programmed in misfire, along with some extra fuel for 30 second to light up the cats faster for cold start emissions testing. Get rid of that, and all is golden.

NorCal f80 · 12-22-2014, 02:06 PM

Quote:

Originally Posted by Dave 90TT

Actually, we need to find out how to code out the cold start. From my understanding, it's a programmed in misfire, along with some extra fuel for 30 second to light up the cats faster for cold start emissions testing. Get rid of that, and all is golden.

Yea, I was thinking that this weekend when I disconnected the valve plugs. It was loud as fuuuuuuuuuuuuuuck on cold start. Once the high idle goes away it's pretty damn quiet. Then I got to thinking there has to be a way to code that out. I know my GTR had no cold start within my tune.

Daft · 12-22-2014, 02:38 PM

I think downpipes with high flow meows is something I would get. When I eventually get my M4 ha.

Jaymax85 · 12-22-2014, 04:00 PM

this post seems like an advert? my concerns with downpipes are 3 fold.

1. smell - though keeping the 2ndary cats would help this
2. warranty- toast ur warranty
3. noise- i think a turboback is too loud, i wonder how the stock exhaust sounds with downpipes....

Merli · 12-22-2014, 04:17 PM

I think @hdekerme should be signing up as a forum sponsor after that post

Mandi90TT · 12-22-2014, 04:26 PM

Quote:

Originally Posted by Merli

I think @hdekerme should be signing up as a forum sponsor after that post

Seriously? A guy posts his good experiences with a vendor, and gives some information about a part that multiple vendors sell, and you want to shit on him?

Seriously?

Merli · 12-22-2014, 04:27 PM

Quote:

Originally Posted by Dave 90TT

Seriously? A guy posts his good experiences with a vendor, and gives some information about a part that multiple vendors sell, and you want to shit on him?

Seriously?

......................... Seriously.

Mandi90TT · 12-22-2014, 04:28 PM

Then you are seriously a tool.

Merli · 12-22-2014, 04:28 PM

Quote:

Originally Posted by Dave 90TT

Then you are seriously a tool.

Seriously?

NorCal f80 · 12-22-2014, 04:44 PM

Too much seriously going on in here.

Mandi90TT · 12-22-2014, 04:47 PM

Quote:

Originally Posted by 0-100 nga real quick

Too much seriously going on in here.

Seriously too much.

GOLFFRR · 12-22-2014, 04:48 PM

Quote:

Originally Posted by hdekerme

The secondary cats do a great job at controlling the smell...

Golfrr - Cold starts would be loud with an after market exhaust but it's actually very well balanced with the stock exhaust system.

intersting. I would think it would not be much different but then again the stock exhaust would have more restricting and sound buffering material in it. I would love to hear the set up, I do remember the boys at EAS saying DPs even with stock is still very loud

Boss330 · 12-22-2014, 05:34 PM

OP:

You choose the Racewerkz downpipes "hands down", which is cool.

But from your post I get the impression that you based your choice on craftsmanship and quality? That implies that you also have done a thorough check on all the other downpipes you listed, in effect done your due dilligence before making a choice. At least since you list all of those suppliers and justify your choice the way you do.

I would like to hear your opinion on what made the other suppliers products fall through. Since the deciding factors was craftsmanship and quality of welds etc, I guess you can elaborate a bit on what was missing in that department on the other brands you listed? Some of those have a fairly high standing and good reputation, but from your post they clearly didn't compare favourably to your chosen brand!

12-22-2014, 12:48 PM	#1
hdekerme Private 27 Rep 81 Posts Drives: 2015 BMW M3 Join Date: Apr 2014 Location: Los Angeles iTrader: (0)	Get Downpipes!!! (Transforms the car) Why? Improves sound without being too over the top. Brings back a bit of the e46 sound. Downshifts are slightly faster and better rev matched in sport plus or it just feels that way because of the improved sound over stock. You also gain about 20WHP but that's secondary compared to the sound improvement. Stop watching the videos online, the sound is not captured well and is very deceiving... Which Downpipe? Choices are: Akrapovic, Eisenmann, Gitani, Racewerkz Engineering, ER Racewerkz Engineering hands down. The work and craftsmanship of the piping and welds are perfect and the price is good too. Reach out to them for pricing and installation. They specialize in setting up racecars for the track and really take pride in their work. Located in San Dimas, CA.
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12-22-2014, 01:17 PM	#2
JDUni1 Lieutenant 76 Rep 521 Posts Drives: '15 M3, '12 135i (Sold) Join Date: Sep 2011 Location: Tucson, AZ iTrader: (0)	AR Designs also has a really nice set available __________________ 2015 Alpine White ///M3 \| Sakhir Orange/Black Extended Merino Leather \| 6MT \| Lighting Package \| Harmon Kardon \| H&R Sport Springs (F32) \| iND Cosmetic Treatment \| M Performance Spoiler \| 19" HRE 301M Frozen Red\| Mode Carbon Trophy R1 Diffuser
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12-22-2014, 01:18 PM	#3
parky1215 Lieutenant Colonel 564 Rep 1,983 Posts Drives: F90 M5C \| G06 X6 M60i Join Date: Nov 2010 Location: Rancho Cucamonga, CA iTrader: (13)	Nah. It stinks too much.
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12-22-2014, 01:35 PM	#5
GOLFFRR 10817 Rep 27,600 Posts Drives: GOLFFRR cart Join Date: Mar 2009 Location: we sell BMWs to "ALL" US states iTrader: (4)	its soooo loud though especially on cold starts but agree it def make the car sound bad ass __________________ 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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12-22-2014, 01:49 PM	#7
hdekerme Private 27 Rep 81 Posts Drives: 2015 BMW M3 Join Date: Apr 2014 Location: Los Angeles iTrader: (0)	The secondary cats do a great job at controlling the smell... Golfrr - Cold starts would be loud with an after market exhaust but it's actually very well balanced with the stock exhaust system.
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12-22-2014, 01:54 PM	#9
NorCal f80 Lieutenant Colonel 346 Rep 1,656 Posts Drives: M3 Join Date: Apr 2014 Location: Nor Cal iTrader: (0)	So what I've learned from this thread is.......... I need to move the fuck out of a townhome complex or just don't be courteous.
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12-22-2014, 01:57 PM	#10
Mandi90TT Colonel 2712 Rep 2,371 Posts Drives: BSM 6MT M4 F82 Join Date: Aug 2014 Location: Colorado Springs iTrader: (0)	Actually, we need to find out how to code out the cold start. From my understanding, it's a programmed in misfire, along with some extra fuel for 30 second to light up the cats faster for cold start emissions testing. Get rid of that, and all is golden. __________________ 2015 Black Sapphire Metallic 6MT M4
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12-22-2014, 02:38 PM	#12
Daft Major 384 Rep 1,203 Posts Drives: 2021 M2C Join Date: Jan 2009 Location: Ontario, Canada iTrader: (2) Garage List 2021 BMW M2 Competi ... [10.00]	I think downpipes with high flow meows is something I would get. When I eventually get my M4 ha.
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12-22-2014, 04:00 PM	#13
Jaymax85 Addicted to Speed. 714 Rep 2,375 Posts Drives: m3 zcp, macan GTS, f15 x5 Join Date: Aug 2011 Location: 'Murica iTrader: (5)	this post seems like an advert? my concerns with downpipes are 3 fold. 1. smell - though keeping the 2ndary cats would help this 2. warranty- toast ur warranty 3. noise- i think a turboback is too loud, i wonder how the stock exhaust sounds with downpipes.... __________________ 2017 991.2s 2015 F15 35i 2017 Macan gts
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12-22-2014, 04:17 PM	#14
Merli Sunburnt Member 158 Rep 525 Posts Drives: 2015 F82 M4 Join Date: Mar 2007 Location: Sydney, Australia iTrader: (0)	I think @hdekerme should be signing up as a forum sponsor after that post __________________ 2019 Deep Blue Tesla Model 3 Performance \| 2015 Mineral White F82 M4 \| 2010 Burnt Orange Lotus Exige S2 Past: 2009 Ibis White S5 (APR Supercharged V8) Past: 2004 Imola Red M3 Convertible
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12-22-2014, 04:28 PM	#17
Mandi90TT Colonel 2712 Rep 2,371 Posts Drives: BSM 6MT M4 F82 Join Date: Aug 2014 Location: Colorado Springs iTrader: (0)	Then you are seriously a tool. __________________ 2015 Black Sapphire Metallic 6MT M4
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12-22-2014, 04:44 PM	#19
NorCal f80 Lieutenant Colonel 346 Rep 1,656 Posts Drives: M3 Join Date: Apr 2014 Location: Nor Cal iTrader: (0)	Too much seriously going on in here.
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12-22-2014, 05:34 PM	#22
Boss330 Major General 1718 Rep 5,110 Posts Drives: BMW Join Date: Mar 2012 Location: Earth iTrader: (0)	OP: You choose the Racewerkz downpipes "hands down", which is cool. But from your post I get the impression that you based your choice on craftsmanship and quality? That implies that you also have done a thorough check on all the other downpipes you listed, in effect done your due dilligence before making a choice. At least since you list all of those suppliers and justify your choice the way you do. I would like to hear your opinion on what made the other suppliers products fall through. Since the deciding factors was craftsmanship and quality of welds etc, I guess you can elaborate a bit on what was missing in that department on the other brands you listed? Some of those have a fairly high standing and good reputation, but from your post they clearly didn't compare favourably to your chosen brand!
	Appreciate 0 Quote