what is more restrictive, our 4 cats, or our 2 stock muffs?

badass1g · 10-17-2009, 03:21 PM

im sure guessing that 4 cats would be more restrictive than the 2 rear muffs by a great deal, correct? anybody have a sound clip with no cats and the stock rear muffs still in tact?

HPFREAK · 10-17-2009, 03:30 PM

Just gut the exhaust already, you know you want too.lol

Honestly you should get a good aftermarket system for the sound, performance, and weight savings. You would be happier I think.

badass1g · 10-17-2009, 04:23 PM

i just hate to spend 1k+ for a catback that provides me like what 10hp lol. esp after the jb3 price per hp gain.

scheherazade · 10-17-2009, 04:48 PM

Mufflers just make turbulence, they don't restrict much.

Imagine a section of pipe with holes drilled all over it, then a metal box that goes around that section...
That's basically a muffler.

-scheherazade

HPFREAK · 10-17-2009, 05:10 PM

Quote:

Originally Posted by badass1g

i just hate to spend 1k+ for a catback that provides me like what 10hp lol. esp after the jb3 price per hp gain.

I hear ya but your not going to get the same price per dollar ratio unless you go with N20.lol Just do some catless DP's and be done with it along with a good FMIC and Intake. Then later on when you find your nutzzz, get the meth kit

That will be good bang for the buck.

badass1g · 10-17-2009, 06:54 PM

ahh the wonderful world of choices

joec500 · 10-17-2009, 07:49 PM

I'll take 2 muffs over 4 cats any day

ar design · 10-17-2009, 07:58 PM

Meow.

335iheLLraiseR · 10-17-2009, 08:03 PM

Friend had it like that, catless dowpipes and stock exhaust with no secondary cats. Loved it, always said it was perfect. Especially if you lease.

Mr. 5 · 10-17-2009, 08:49 PM

Actually, if you look inside the mufflers, it's not restrictive at all.
The pipes are straight through.
The cats are much more restrictive.

Here's a pic of a 335 muffler that was cut open.

TreDirtyFive · 10-17-2009, 10:59 PM

Quote:

Originally Posted by Mr. 5

Actually, if you look inside the mufflers, it's not restrictive at all.
The pipes are straight through.
The cats are much more restrictive.

Here's a pic of a 335 muffler that was cut open.

+1 ... Most Muffler/Catbacks don't make much power anyhow. All about the Cats!

Sniz · 10-18-2009, 12:04 AM

Quote:

Originally Posted by Mr. 5

Actually, if you look inside the mufflers, it's not restrictive at all.
The pipes are straight through.
The cats are much more restrictive.

Here's a pic of a 335 muffler that was cut open.

whats in the little chamber? did you cut that open?

badass1g · 10-18-2009, 12:10 AM

ok so looks like next thing is to get rid of all the cats (after next weeks trip to the dealer for service). i figure about 300 for dp's, 50 for sims, and 150ish to have some removable testpipes with flanges on the stock cats for when i need to put them back on. so about 500ish for everything and should give me some good sound and also free up some ponies and spool the turboes a little faster. thanks all.

10-17-2009, 03:21 PM	#1
badass1g Captain 53 Rep 646 Posts Drives: 07 335i Join Date: Oct 2009 Location: utah iTrader: (7)	what is more restrictive, our 4 cats, or our 2 stock muffs? im sure guessing that 4 cats would be more restrictive than the 2 rear muffs by a great deal, correct? anybody have a sound clip with no cats and the stock rear muffs still in tact?
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10-17-2009, 03:30 PM	#2
HPFREAK Lieutenant Colonel 66 Rep 1,884 Posts Drives: C6 ZO6 Join Date: Sep 2009 Location: Socal iTrader: (8)	Just gut the exhaust already, you know you want too.lol Honestly you should get a good aftermarket system for the sound, performance, and weight savings. You would be happier I think. __________________ My Youtube Channel
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10-17-2009, 04:23 PM	#3
badass1g Captain 53 Rep 646 Posts Drives: 07 335i Join Date: Oct 2009 Location: utah iTrader: (7)	i just hate to spend 1k+ for a catback that provides me like what 10hp lol. esp after the jb3 price per hp gain.
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10-17-2009, 04:48 PM	#4
scheherazade Major 37 Rep 1,467 Posts Drives: 09 GTR (& 93' accord!) Join Date: Sep 2008 Location: DC metro area iTrader: (8)	Mufflers just make turbulence, they don't restrict much. Imagine a section of pipe with holes drilled all over it, then a metal box that goes around that section... That's basically a muffler. -scheherazade
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10-17-2009, 06:54 PM	#6
badass1g Captain 53 Rep 646 Posts Drives: 07 335i Join Date: Oct 2009 Location: utah iTrader: (7)	ahh the wonderful world of choices
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10-17-2009, 07:49 PM	#7
joec500 Brigadier General 133 Rep 3,049 Posts Drives: it has 4 wheels Join Date: Jul 2008 Location: Los Angeles iTrader: (11)	I'll take 2 muffs over 4 cats any day
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10-17-2009, 07:58 PM	#8
ar design 300 Rep 4,408 Posts Drives: 04 M3 Join Date: Jan 2008 Location: Denver, CO iTrader: (9)	Meow. __________________ -Critter
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10-17-2009, 08:49 PM	#10
Mr. 5 Modder Raider 799 Rep 8,633 Posts Drives: M3 Join Date: Apr 2007 Location: Surf City, HB iTrader: (31) Garage List 2007 e90 335i [8.00]	Actually, if you look inside the mufflers, it's not restrictive at all. The pipes are straight through. The cats are much more restrictive. Here's a pic of a 335 muffler that was cut open. __________________ e36 M3 Coupe, e36 325i Sedan e90 335i--SOLD Best 60-130-------------9.15 Seconds------------------WWW.MR5RACING.COM
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10-18-2009, 12:10 AM	#13
badass1g Captain 53 Rep 646 Posts Drives: 07 335i Join Date: Oct 2009 Location: utah iTrader: (7)	ok so looks like next thing is to get rid of all the cats (after next weeks trip to the dealer for service). i figure about 300 for dp's, 50 for sims, and 150ish to have some removable testpipes with flanges on the stock cats for when i need to put them back on. so about 500ish for everything and should give me some good sound and also free up some ponies and spool the turboes a little faster. thanks all.
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