Catless Downpipe for 340i

bimmer456 · 07-03-2017, 05:39 PM

Anyone know if there's a catless downpipe for 340i? I'm assuming this removes a cat after the ones with 02 sensors. Does this improve exhaust note or increase power and can you do it with MPPSK?

PushingRedline · 07-04-2017, 08:41 AM

I just installed the VRSF catless dp...sounds great and let's the turbo spool faster...but I have stock exhaust with it, not mppsk.

miked07 · 07-04-2017, 12:46 PM

Quote:

Originally Posted by bimmer456

Anyone know if there's a catless downpipe for 340i? I'm assuming this removes a cat after the ones with 02 sensors. Does this improve exhaust note or increase power and can you do it with MPPSK?

Have a 4 inch vm catless downpipe for sale. Slightly used. Let me know if you're interested

spatterson007 · 07-13-2017, 11:11 AM

Quote:

Originally Posted by miked07

Have a 4 inch vm catless downpipe for sale. Slightly used. Let me know if you're interested

I noticed that you have an M performance exhaust with your down pipe. I am planning on getting an MPE exhaust as well however I am worried it will not be as loud as I would like. Does a after market midpipe/downpipe increase sound from the MPE or do I need to get an exhaust from the same aftermarket company as my mid/down pipe.?

Im currently looking into MPE and AWE midpipe.

miked07 · 07-13-2017, 01:38 PM

Quote:

Originally Posted by spatterson007

Quote:

Originally Posted by miked07

Have a 4 inch vm catless downpipe for sale. Slightly used. Let me know if you're interested

I noticed that you have an M performance exhaust with your down pipe. I am planning on getting an MPE exhaust as well however I am worried it will not be as loud as I would like. Does a after market midpipe/downpipe increase sound from the MPE or do I need to get an exhaust from the same aftermarket company as my mid/down pipe.?

Im currently looking into MPE and AWE midpipe.

I have the mpe with catless downpipe and it is loud enough for some people for everyday driving. I personally want to go a little bit louder and was considering the awe midpipe as an addition. It is extremely loud because it is a non-resonated midpipe. If you go on YouTube you can find a few videos of guys running MPE with awe midpipe and see if you like the sound.

take1step · 07-13-2017, 03:17 PM

I went with a Wagner catless dp and AWE touring exhaust (axle back and mid pipe). With the valve open, it's basically a straight pipe (f**ing loud). The shifts are ridiculous.

With the valve closed, it's much more civilized and doesn't drone on highways. It's definitely louder than stock but not by much. Before I installed the dp, with the valve closed it sounded stock.

Either way, I love the setup with the dp and would definitely recommend the AWE switch path touring. Adaptable between a daily / track driver.

jalkster · 07-13-2017, 03:28 PM

Quote:

Originally Posted by take1step

I went with a Wagner catless dp and AWE touring exhaust (axle back and mid pipe). With the valve open, it's basically a straight pipe (f**ing loud). The shifts are ridiculous.

With the valve closed, it's much more civilized and doesn't drone on highways. It's definitely louder than stock but not by much. Before I installed the dp, with the valve closed it sounded stock.

Either way, I love the setup with the dp and would definitely recommend the AWE switch path touring. Adaptable between a daily / track driver.

There is no valved AWE system for the B58 yet.

OP, I run the ER DP (4.5" and imo the best quality catless dp on the market) paired to Meisterschaft catback and when its open its louddd. I had a AWE axleback before but with a stock midpipe, and it sounded great. Pretty quiet in the cabin, but outside it sounded great. So yes I enjoy the sounds from the downpipe. With power, its not drastic but noticeable. Turbo whisle for days too

I debated on adding a midpipe to my catlessDP/AWE set up but didnt want to be loud as hell 24/7 so thats why I opted for a valved catback.

babyboss · 07-16-2017, 04:22 PM

don't do DP if u have PPK kit ..

pros:
makes +- 7kw ..

cons:
makes tinny noise but sounds wicked otherwise.
runs slower on 1/4m ..

Tiago@VRSF · 07-17-2017, 11:09 PM

Quote:

Originally Posted by PushingRedline

I just installed the VRSF catless dp...sounds great and let's the turbo spool faster...but I have stock exhaust with it, not mppsk.

Thanks for the kind words!

http://www.vr-speed.com/vrsf-4-5-cat...0i-xdrive.html

Plenty in stock currently

mike@x-ph.com · 07-18-2017, 04:57 PM

Lots of downpipe options
VRSF, VM and Evolution Racewerks

CAUTION: This product is intended for OFF ROAD COMPETITION USE ONLY. Not legal for use on pollution controlled vehicles upon public road/highways. Please check emission laws in your state. Extreme Power House is not responsible for any misuse of this product.

Thisisdudewhoru · 07-31-2017, 11:58 AM

I have mpe and the er catless DP significantly increased the loudness. I've thought about getting the awe midpipe for more loudness. Haven't decided if I want to yet

mike@x-ph.com · 07-31-2017, 12:18 PM

Quote:

Originally Posted by Thisisdudewhoru

I have mpe and the er catless DP significantly increased the loudness. I've thought about getting the awe midpipe for more loudness. Haven't decided if I want to yet

Adding AWE midpipe will add a deeper tone to your exhaust

jalkster · 08-01-2017, 06:27 AM

My first exhaust mod was an AWE Axle-back, then I did a ER DP, then a custom straight 3 1/4" mid pipe and I can say the mid pipe made a lot bigger difference than the other two.

Antec800 · 09-05-2017, 11:07 AM

Quote:

Originally Posted by babyboss

don't do DP if u have PPK kit ..

pros:
makes +- 7kw ..

cons:
makes tinny noise but sounds wicked otherwise.
runs slower on 1/4m ..

A d-p makes the car slower?

mike@x-ph.com · 09-12-2017, 06:55 PM

Quote:

Originally Posted by Antec800

A d-p makes the car slower?

Faster

Mike@N54Tuning.com · 09-14-2017, 08:32 AM

Quote:

Originally Posted by bimmer456

Anyone know if there's a catless downpipe for 340i? I'm assuming this removes a cat after the ones with 02 sensors. Does this improve exhaust note or increase power and can you do it with MPPSK?

ER makes one of the best downpipes on the market. Both catted and catless.. Check them out.

Both will improve exhaust tone, but the catless will sound much better, especially when paired with a stock exhaust.

Mike

Mike@N54Tuning.com · 09-14-2017, 08:33 AM

Quote:

Originally Posted by Thisisdudewhoru

I have mpe and the er catless DP significantly increased the loudness. I've thought about getting the awe midpipe for more loudness. Haven't decided if I want to yet

That will be very loud

Mike

mike@x-ph.com · 05-22-2018, 11:59 AM

Evolution Racewerks vs stock

Frank Jia · 05-22-2018, 06:05 PM

Catless Downpipe will bring Tune problems on this platform and Throttle Closure issue which is terrible for driving experience.

Mike@N54Tuning.com · 05-24-2018, 08:36 AM

Quote:

Originally Posted by Frank Jia

Catless Downpipe will bring Tune problems on this platform and Throttle Closure issue which is terrible for driving experience.

It shouldn't if adjusted properly. With something like the JB+, then yes as there is no adjustment but with the JB4 there are user adjustments that will take care of the issue if it arrises.

Mike

WTruter · 06-25-2018, 07:50 AM

Anyone fitted a de-cat downpipe with the MPPSK? Interested to see how much louder it comes? Or does it just pop and bang a bit more in sport?

Bullitt1841 · 06-25-2018, 02:35 PM

Quote:

Originally Posted by WTruter

Anyone fitted a de-cat downpipe with the MPPSK? Interested to see how much louder it comes? Or does it just pop and bang a bit more in sport?

Yup. It's fucking loud.

07-03-2017, 05:39 PM	#1
bimmer456 Major General 2963 Rep 5,997 Posts Drives: 340i Join Date: Nov 2016 Location: Pasadena, CA iTrader: (0)	Catless Downpipe for 340i Anyone know if there's a catless downpipe for 340i? I'm assuming this removes a cat after the ones with 02 sensors. Does this improve exhaust note or increase power and can you do it with MPPSK?
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07-04-2017, 08:41 AM	#2
PushingRedline Private 16 Rep 97 Posts Drives: 2017 340xi M-Sport Join Date: Apr 2014 Location: Ohio iTrader: (0)	I just installed the VRSF catless dp...sounds great and let's the turbo spool faster...but I have stock exhaust with it, not mppsk.
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07-13-2017, 03:17 PM	#6
take1step Private 101 Rep 96 Posts Drives: M340ix 2020 Join Date: May 2017 Location: QC iTrader: (0)	I went with a Wagner catless dp and AWE touring exhaust (axle back and mid pipe). With the valve open, it's basically a straight pipe (f**ing loud). The shifts are ridiculous. With the valve closed, it's much more civilized and doesn't drone on highways. It's definitely louder than stock but not by much. Before I installed the dp, with the valve closed it sounded stock. Either way, I love the setup with the dp and would definitely recommend the AWE switch path touring. Adaptable between a daily / track driver.
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07-16-2017, 04:22 PM	#8
babyboss Lieutenant 74 Rep 554 Posts Drives: 640d Msport Join Date: Jun 2010 Location: centurion iTrader: (0) Garage List 2012 640d [0.00]	don't do DP if u have PPK kit .. pros: makes +- 7kw .. cons: makes tinny noise but sounds wicked otherwise. runs slower on 1/4m .. Last edited by babyboss; 07-16-2017 at 04:32 PM..
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07-18-2017, 04:57 PM	#10
mike@x-ph.com BimmerPost Supporting Vendor 24198 Rep 190,805 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Lots of downpipe options VRSF, VM and Evolution Racewerks CAUTION: This product is intended for OFF ROAD COMPETITION USE ONLY. Not legal for use on pollution controlled vehicles upon public road/highways. Please check emission laws in your state. Extreme Power House is not responsible for any misuse of this product. __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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07-31-2017, 11:58 AM	#11
Thisisdudewhoru Captain 82 Rep 698 Posts Drives: 16 BSM 340i Join Date: Mar 2010 Location: 423 iTrader: (1)	I have mpe and the er catless DP significantly increased the loudness. I've thought about getting the awe midpipe for more loudness. Haven't decided if I want to yet
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08-01-2017, 06:27 AM	#13
jalkster Lieutenant 220 Rep 579 Posts Drives: X3MC Join Date: Jan 2017 Location: Dallas, TX iTrader: (3)	My first exhaust mod was an AWE Axle-back, then I did a ER DP, then a custom straight 3 1/4" mid pipe and I can say the mid pipe made a lot bigger difference than the other two. __________________ Current: 2021 M340i Previous: 2020 X3M Comp BM3 E30 & 2016 340i 8AT DME Stage 2 \| FBO/Catless Meisterschaft Catback \| Ohlins R&T
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05-22-2018, 11:59 AM	#18
mike@x-ph.com BimmerPost Supporting Vendor 24198 Rep 190,805 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Evolution Racewerks vs stock __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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05-22-2018, 06:05 PM	#19
Frank Jia Private First Class 67 Rep 111 Posts Drives: BMW 340i MPPSK Join Date: Jun 2016 Location: Australia iTrader: (0)	Catless Downpipe will bring Tune problems on this platform and Throttle Closure issue which is terrible for driving experience.
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06-25-2018, 07:50 AM	#21
WTruter First Lieutenant 101 Rep 322 Posts Drives: F30 340i W/MPPSK Join Date: Apr 2017 Location: South West Brisbane iTrader: (0)	Anyone fitted a de-cat downpipe with the MPPSK? Interested to see how much louder it comes? Or does it just pop and bang a bit more in sport?
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