300 sound

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Feb 27, 2008 | 05:14 PM

#31

optikal illushun

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Joined: Mar 2002

Posts: 3,545

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From: Coal Region

that was 4 yrs ago, to much beer since then to remember hehe.

BTW, there are no resonators on these trucks. there are two cats on them, one is a "pre" cat and the other is a cat.

Feb 27, 2008 | 11:06 PM

#32

tjthegreat

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Joined: Jan 2008

Posts: 721

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From: Ft Wayne IN

i heard having a straight pipe is bad on the engine because no backpressure on the valves can anyone tell me if this is true

Feb 28, 2008 | 10:22 AM

#33

f100guy

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Joined: Jun 2003

Posts: 2,656

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From: shepherd

http://www.supermotors.net/vehicles/...y/media/613116

this is with the bolt ons and no cat, banks muffler

http://www.supermotors.net/vehicles/...y/media/613117

this is with totally stock engine and the same muffler as above.

Feb 29, 2008 | 12:04 PM

#34

justin_jkj

Senior User

Joined: Oct 2006

Posts: 166

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Quote:

Originally Posted by optikal illushun

uh...ok. i guess the y pipe isnt a cat.

yes the 300 efi has 2 cats 1 is the "Y" and the other one is about a foot behind it. most people just chop the second one off.

Feb 29, 2008 | 02:57 PM

#35

optikal illushun

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Joined: Mar 2002

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From: Coal Region

i know it does.

Feb 29, 2008 | 03:30 PM

#36

Silver Streak

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Joined: May 2002

Posts: 3,241

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From: Broken Arrow, OK

Quote:

Originally Posted by Secret Agent 069

The only way your going to have 2 cats, is IF your running dual exhaust. Otherwise, you'll have 1 resonator, 1 cat, 1 muffler.

BS. There's a front cat that doubles as a Y-pipe and then another one behind it like others have said. You'd probably soil yourself if you saw one of the newer cars with 4 cats.

Feb 29, 2008 | 07:35 PM

#37

f100guy

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From: shepherd

the stock 96-98 mustangs have 6 cats. i have a 2000 mustang with 4

Mar 3, 2008 | 10:15 AM

#38

f100guy

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Joined: Jun 2003

Posts: 2,656

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From: shepherd

ok, i fixed the links so now they work.

http://www.supermotors.net/getfile/...arket-motor.wav

this is with the bolt ons and no cat,efi manifolds, banks muffler and sidepipes at the back of cab pass. side.

http://www.supermotors.net/getfile/...mtruckbanks.wav

this is with totally stock engine and manifold and the same muffler as above. i liked the way it sounded better when it was stock because it sounded almost like a 5.9 cummins diesel and did not sound ricey at any rpm unlike it did with the efi manifolds.