who has jb4 without catless dps?

iamvietness · 10-01-2016, 09:38 PM

Looking to add JB4 to my car and debating about catless DPs. Already have the catback AA system and my wife is already complaining about how much louder it is (lol) so just wondering if it's ok to run jb4 map 2 without DPs.

Someone? · 10-01-2016, 10:14 PM

Catted Downs=Boooooo, Catless Downs=Yaayyy

iamvietness · 10-01-2016, 10:32 PM

Quote:

Originally Posted by ibmike

Catted Downs=Boooooo, Catless Downs=Yaayyy

Lol

iamvietness · 10-01-2016, 11:31 PM

Quote:

Originally Posted by ibmike

Catted Downs=Boooooo, Catless Downs=Yaayyy

How much louder will it make the exhaust?

Someone? · 10-02-2016, 09:00 AM

Personally coming from an e92 M3 with full Arko i wasnt sure if i would like the sound, But i really like it, the exhaust is fairly load, but with the catless downs and the exhaust valves Closed its VERY Quite even catless.

iamvietness · 10-02-2016, 09:49 AM

Quote:

Originally Posted by ibmike

Personally coming from an e92 M3 with full Arko i wasnt sure if i would like the sound, But i really like it, the exhaust is fairly load, but with the catless downs and the exhaust valves Closed its VERY Quite even catless.

i'm already running the full AA system and to me it's not loud but to my wife it's pushing it. afraid the catless would be overkill for her since we take my car out on weekends

Fast4d · 10-03-2016, 06:40 PM

for 15 years I had two different cars running without cats.

all the 'extra' I spent on special smog tests, etc, etc. to pass bi-annual smog tests here in CA.

I know there's no smog test for 5 years but my exhaust is staying OEM this time. LOL.

dmk08 · 10-03-2016, 07:45 PM

OEM On the zcp after having aftermarket on my 15 for 2 years.

F80R · 10-03-2016, 08:16 PM

JB4 and Awe non res with stock downpipes.. don't need anything else ..

EALm4 · 10-03-2016, 08:46 PM

Quote:

Originally Posted by iamvietness

How much louder will it make the exhaust?

As long as you cold start with the valves closed... not bad at all. Valves open....pretty damn loud

Get them, you wont regret it.

Rbezy · 10-04-2016, 10:44 AM

I'll post up a video soon, sorry Ive been saying im going to do it for like 2 months now..

I have catless DPs and AA Midpipe with JB4, its really loud, I have to close my flaps in certain cities where cops like to give tickets.

JoeyBananas · 10-04-2016, 11:12 AM

Great, I have DPs & Full AA exhaust. I really hope its not cringeworthy loud

dmk08 · 10-04-2016, 02:55 PM

Quote:

Originally Posted by JoeyBananas

Great, I have DPs & Full AA exhaust. I really hope its not cringeworthy loud

Its not HORRIBLE because you have "always closed" valves on the AA rear section. Meaning it always goes through the mufflers no matter what because there are no valves to open. I sold my AA setup cause it was too quiet.

Now cold start on DP, AA mid, and stock rear is super load when it flips those valves open.

mike@x-ph.com · 10-04-2016, 03:13 PM

Catless + AA full exhaust sounds amazing in my opinion .. That would be my daily driver setup

JoeyBananas · 10-04-2016, 04:11 PM

got it, Thanks!

iamvietness · 10-04-2016, 04:40 PM

Quote:

Originally Posted by mike@x-ph.com

Catless + AA full exhaust sounds amazing in my opinion .. That would be my daily driver setup

Things were easier when I was single lol

chewbakam4 · 10-04-2016, 05:22 PM

With dps here and without a jb LOL! Plenty loud and fast!

View Poll Results: JB4 with or without catless DPs?
With OEM DPs	16	47.06%
With catless DPs	18	52.94%
Voters: 34. You may not vote on this poll

10-01-2016, 09:38 PM	#1
iamvietness Colonel 246 Rep 2,174 Posts Drives: 2015 M3 Join Date: May 2008 Location: Plano, TX iTrader: (4)	who has jb4 without catless dps? Looking to add JB4 to my car and debating about catless DPs. Already have the catback AA system and my wife is already complaining about how much louder it is (lol) so just wondering if it's ok to run jb4 map 2 without DPs.
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10-01-2016, 10:14 PM	#2
Someone? Perception is King 131 Rep 1,703 Posts Drives: M4 Join Date: May 2013 Location: Michigan iTrader: (8)	Catted Downs=Boooooo, Catless Downs=Yaayyy __________________ Perception and Reality are Two totally different Things.
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10-02-2016, 09:00 AM	#5
Someone? Perception is King 131 Rep 1,703 Posts Drives: M4 Join Date: May 2013 Location: Michigan iTrader: (8)	Personally coming from an e92 M3 with full Arko i wasnt sure if i would like the sound, But i really like it, the exhaust is fairly load, but with the catless downs and the exhaust valves Closed its VERY Quite even catless. __________________ Perception and Reality are Two totally different Things.
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10-03-2016, 06:40 PM	#7
Fast4d Captain 267 Rep 885 Posts Drives: 325 Join Date: Jan 2012 Location: So cal iTrader: (0)	for 15 years I had two different cars running without cats. all the 'extra' I spent on special smog tests, etc, etc. to pass bi-annual smog tests here in CA. I know there's no smog test for 5 years but my exhaust is staying OEM this time. LOL.
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10-03-2016, 07:45 PM	#8
dmk08 Gone Fishin’ 7318 Rep 12,125 Posts Drives: Walks Join Date: Jul 2012 Location: Atlanta iTrader: (19)	OEM On the zcp after having aftermarket on my 15 for 2 years.
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10-03-2016, 08:16 PM	#9
F80R Second Lieutenant 60 Rep 250 Posts Drives: Tanzanite Blue F80 M3 Join Date: Jun 2016 Location: Brooklyn iTrader: (0)	JB4 and Awe non res with stock downpipes.. don't need anything else ..
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10-04-2016, 10:44 AM	#11
Rbezy Second Lieutenant 59 Rep 213 Posts Drives: 2015 BMW M4 - YMB Join Date: Mar 2016 Location: Los Angeles iTrader: (0)	I'll post up a video soon, sorry Ive been saying im going to do it for like 2 months now.. I have catless DPs and AA Midpipe with JB4, its really loud, I have to close my flaps in certain cities where cops like to give tickets.
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10-04-2016, 11:12 AM	#12
JoeyBananas Lieutenant Colonel 696 Rep 1,517 Posts Drives: NA Join Date: Jul 2014 Location: NJ iTrader: (0)	Great, I have DPs & Full AA exhaust. I really hope its not cringeworthy loud
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10-04-2016, 03:13 PM	#14
mike@x-ph.com BimmerPost Supporting Vendor 24491 Rep 191,471 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Catless + AA full exhaust sounds amazing in my opinion .. That would be my daily driver setup __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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10-04-2016, 04:11 PM	#15
JoeyBananas Lieutenant Colonel 696 Rep 1,517 Posts Drives: NA Join Date: Jul 2014 Location: NJ iTrader: (0)	got it, Thanks!
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10-04-2016, 05:22 PM	#17
chewbakam4 Major 717 Rep 1,184 Posts Drives: F82 M4 Join Date: Oct 2015 Location: Malton iTrader: (0)	With dps here and without a jb LOL! Plenty loud and fast!
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