Downpipe or Catback? Cant Decide

Stevanus.D · 03-20-2014, 10:41 AM

i planned to get a downpipe or a full catback system for my 320i on JB4, which one you think will get me more power and torque..also i got a very good deal on the catback and i like it more because of its sound that can really change a car character..

please help me to decide.. Thanks.

Sherhart · 03-20-2014, 11:35 AM

If it's power you want, go downpipe. Catless will open up the exhaust and make things a bit louder, but not to the point that a catback will.

Jimbo

mike@x-ph.com · 03-20-2014, 10:03 PM

Go with DP, they add performance and sound.
If the sound is not enough go with catback

rustyminded · 03-21-2014, 05:34 PM

Quote:

Originally Posted by mike@x-ph.com

Go with DP, they add performance and sound.
If the sound is not enough go with catback

That's what I did AFE dp wasn't enough so I went for the AA axle-back exhaust and now it's loud as it gets

mike@x-ph.com · 03-21-2014, 07:46 PM

Quote:

Originally Posted by rustyminded

That's what I did AFE dp wasn't enough so I went for the AA axle-back exhaust and now it's loud as it gets

Nice!!!

TurboM · 03-21-2014, 07:54 PM

Easy decision if power is the main factor...downpipe

K320 · 03-22-2014, 01:36 AM

I saw ER, AFE, Supersprint, etc.

What DP are recommended?
Catted or Catless?

rustyminded · 03-22-2014, 01:03 PM

Quote:

Originally Posted by Kendroz

I saw ER, AFE, Supersprint, etc.

What DP are recommended?
Catted or Catless?

well they all do the same thing, remove restriction and allow more flow so you need to know what are the regulations of your country so you don't get your car checked one day and bam, for mine they don't give a damn so I went catless

K320 · 03-22-2014, 02:34 PM

Quote:

Originally Posted by rustyminded

well they all do the same thing, remove restriction and allow more flow so you need to know what are the regulations of your country so you don't get your car checked one day and bam, for mine they don't give a damn so I went catless

Yes but i see that ones are with flexible and others (afe) dont.

rustyminded · 03-22-2014, 03:51 PM

Quote:

Originally Posted by Kendroz

Yes but i see that ones are with flexible and others (afe) dont.

I noticed that while it was being installed lol, if you want catless go with the ER it gives you the option of thermal coating which I had to put wrap in case of excess heat.

335ievo · 03-26-2014, 04:11 PM

I have the ER catless downpipe and AFE catback setup. Pretty loud on cold starts, but definitely loving the performance gains.

Dippydo · 03-26-2014, 06:18 PM

Stupid question but adding a downpipe will void what part of the warranty? Just curious. Anyone know?

rustyminded · 03-26-2014, 06:57 PM

Quote:

Originally Posted by Dippydo

Stupid question but adding a downpipe will void what part of the warranty? Just curious. Anyone know?

As long as there is no CEL, you are safe, I went and made service at dealer with dp and H&R springs.. they didn't say anything and I walked out like a boss

but I know they saw the suspension at least maybe they didn't see the dp cuz it had a wrap and there was no CEL on.

bettyblue · 03-27-2014, 07:05 AM

anyone tried supersprint DP with cat?

Stevanus.D · 03-27-2014, 09:22 AM

Quote:

Originally Posted by Dippydo

Stupid question but adding a downpipe will void what part of the warranty? Just curious. Anyone know?

thats the route i am going with.. i finally got it made by a speedshop here (which usually made exhaust for ferraris, lambos, porsches etc.)..catback+downpipe.. every calculation is bang on...

Dippydo · 03-27-2014, 10:33 AM

Quote:

Originally Posted by rustyminded

As long as there is no CEL, you are safe, I went and made service at dealer with dp and H&R springs.. they didn't say anything and I walked out like a boss

but I know they saw the suspension at least maybe they didn't see the dp cuz it had a wrap and there was no CEL on.

Yah I am not worried about the suspension since I already swapped out for coil overs. My biggest concern is the engine warranty since that is the most expensive part to replace. Can't void the engine issues for suspension. I guess I will ask the service guy next week when I take it in for service. I would think a down pipe would be like an exhaust and not void the engine warranty. But my guessing can get me in trouble.. lol.

K320 · 03-27-2014, 10:10 PM

Quote:

Originally Posted by rustyminded

That's what I did AFE dp wasn't enough so I went for the AA axle-back exhaust and now it's loud as it gets

Please post some videos or photos.
This is the setup iám looking for.

rustyminded · 03-31-2014, 01:04 PM

Quote:

Originally Posted by Kendroz

Please post some videos or photos.
This is the setup iám looking for.

It really sounds very good in real life.. in the second video the first to revs were on eco pro

Enjoy

K320 · 03-31-2014, 07:58 PM

Thanks

K320 · 04-16-2014, 01:46 AM

I saw PLM downpipe with a price very low.
https://www.privatelabelmfg.com/Prod...e=PLM-B-F30-DP
Are they comparative to ER downpipe?
Can someone comment on this downpipe?

mike@x-ph.com · 04-16-2014, 10:08 AM

Quote:

Originally Posted by Kendroz

I saw PLM downpipe with a price very low.
https://www.privatelabelmfg.com/Prod...e=PLM-B-F30-DP
Are they comparative to ER downpipe?
Can someone comment on this downpipe?

Not even close.
ER is way better quality, fitment and all their products are made in the USA and constantly checked, tested and improved.

rustyminded · 04-16-2014, 12:26 PM

Quote:

Originally Posted by mike@x-ph.com

Not even close.
ER is way better quality, fitment and all their products are made in the USA and constantly checked, tested and improved.

I would go for ER after I got the AFE regretted because of fitment & no flex to handle the stress on hard runs.

03-20-2014, 10:41 AM	#1
Stevanus.D New Member 9 Rep 26 Posts Drives: 2013 320i Sport Join Date: Feb 2014 Location: Jakarta, Indonesia iTrader: (0)	Downpipe or Catback? Cant Decide i planned to get a downpipe or a full catback system for my 320i on JB4, which one you think will get me more power and torque..also i got a very good deal on the catback and i like it more because of its sound that can really change a car character.. please help me to decide.. Thanks.
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03-20-2014, 11:35 AM	#2
Sherhart First Lieutenant 90 Rep 300 Posts Drives: 2016 M4 Vert & 2015 RR Sport Join Date: Feb 2007 Location: Seattle, WA iTrader: (0)	If it's power you want, go downpipe. Catless will open up the exhaust and make things a bit louder, but not to the point that a catback will. Jimbo
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03-20-2014, 10:03 PM	#3
mike@x-ph.com BimmerPost Supporting Vendor 24081 Rep 190,597 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Go with DP, they add performance and sound. If the sound is not enough go with catback __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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03-21-2014, 07:54 PM	#6
TurboM Captain 252 Rep 674 Posts Drives: 2018 F82 M4 ZCP Join Date: Nov 2013 Location: Atlanta iTrader: (1)	Easy decision if power is the main factor...downpipe
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03-22-2014, 01:36 AM	#7
K320 First Lieutenant 131 Rep 350 Posts Drives: G01-X3 30i MSport Join Date: Aug 2013 Location: Puerto Rico iTrader: (0)	I saw ER, AFE, Supersprint, etc. What DP are recommended? Catted or Catless?
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03-26-2014, 04:11 PM	#11
335ievo Your'e gonna learrrrrrnn tooooday 38 Rep 595 Posts Drives: 2013 BMW 328i M Sport EB Join Date: Mar 2008 Location: ATL, Georgia iTrader: (1)	I have the ER catless downpipe and AFE catback setup. Pretty loud on cold starts, but definitely loving the performance gains. __________________ 2013 BMW 328i MSport F30 - Estoril Blue "Minds are like parachutes. They only function when they are open." James Dewar
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03-26-2014, 06:18 PM	#12
Dippydo Lieutenant Colonel 230 Rep 1,556 Posts Drives: 2023 M8 Comp Join Date: May 2013 Location: Katy, TX iTrader: (0) Garage List 2012 BMW [1.00]	Stupid question but adding a downpipe will void what part of the warranty? Just curious. Anyone know?
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03-27-2014, 07:05 AM	#14
bettyblue New Member 1 Rep 11 Posts Drives: F30 Join Date: Sep 2012 Location: HK iTrader: (0)	anyone tried supersprint DP with cat?
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03-31-2014, 07:58 PM	#19
K320 First Lieutenant 131 Rep 350 Posts Drives: G01-X3 30i MSport Join Date: Aug 2013 Location: Puerto Rico iTrader: (0)	Thanks
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04-16-2014, 01:46 AM	#20
K320 First Lieutenant 131 Rep 350 Posts Drives: G01-X3 30i MSport Join Date: Aug 2013 Location: Puerto Rico iTrader: (0)	I saw PLM downpipe with a price very low. https://www.privatelabelmfg.com/Prod...e=PLM-B-F30-DP Are they comparative to ER downpipe? Can someone comment on this downpipe?
	Appreciate 0 Quote