Originally posted by PRIMOCB7
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No, I'm talking about those "high-flow" cats that are a straight-through design (even my OEM cat was a straight-through, but the OEM muffler was baffled, which cut down on noise)...in order to get rid of the "rasp" you MUST used something baffled in the exhaust chain, whether it be a cat (not too sure if any cats are baffled), resonator or muffler...end of story. This is what I've experienced with my particular exhaust build...can you say the same?Last edited by WeDgE; 12-13-2004, 04:14 PM.
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i've been running with a random tech high flow cat, and an apexi ws1..definetely no raspy sounds. but true about having some type of baffle. thats why most exhaust systems such as greddy, apexi, tanabe all have resonators to minimize the "raspy" tone.Originally posted by WeDgE5.6L V8 32V DOHC
JDM HERITAGE - US BUILTComment
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Exactly, your Apexi has a baffle which takes away the "raspy" sound...your cat doesn't do this UNLESS it has a baffle...straight-through designs DO NOT cut down on the raspy tone AT ALL.Originally posted by PRIMOCB7
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you dont need a louvered resonator to get rid of the raspy noise. i have a straightpipe exhaust and all i have to do is throw on my carsound cat and the noise is gone.
the fact that primo has a ws, doesnt mean anything, its all in the cat. i had a ws1 and when i ran without a cat i got some raspiness. put a cat on, and it was gone. when we're talking about highflow cat, we mean a REAL highflow cat, not that ebay straightpipe shit.
btw, good choice with the magnaflow/carsound
Last edited by DrLove'sKuDang; 12-13-2004, 07:11 PM.
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where did you guys get your random tech cats at?Comment
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Is your cat a straight-through design or does it have a baffle? Can you look in one end and see completely out the other side?Originally posted by DrLove'sKuDangyou dont need a louvered resonator to get rid of the raspy noise. i have a straightpipe exhaust and all i have to do is throw on my carsound cat and the noise is gone.
the fact that primo has a ws, doesnt mean anything, its all in the cat. i had a ws1 and when i ran without a cat i got some raspiness. put a cat on, and it was gone. when we're talking about highflow cat, we mean a REAL highflow cat, not that ebay straightpipe shit.
btw, good choice with the magnaflow/carsoundComment
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This guy knows exactly what Im talking aboutOriginally posted by DrLove'sKuDangyou dont need a louvered resonator to get rid of the raspy noise. i have a straightpipe exhaust and all i have to do is throw on my carsound cat and the noise is gone.
the fact that primo has a ws, doesnt mean anything, its all in the cat. i had a ws1 and when i ran without a cat i got some raspiness. put a cat on, and it was gone. when we're talking about highflow cat, we mean a REAL highflow cat, not that ebay straightpipe shit.
btw, good choice with the magnaflow/carsound
WeDgE: The ApexI WS has an resonator already, just take our word for it that it is the cat that is making the annoying raspy sound. ATX, DrLove, Primo, and others has all previsously stated that removing the cat for a "straight pipe" type deal will make the exhaust alot raspier, install a cat and the raspy sound is gone.
Back on topic...my new cat should be here in 7-10 days, I cant wait.
JayHittin Switches - Draggin XhaustAlways Under ConstructionComment
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this is what my cat looks like...
just like a stock cat, but the honeycomb isnt as restrictive, hence "highflow"
a so-called straight-thru cat, isnt a cat at all. its just another smaller resonator that takes the place of a cat. which does nothing but slow flow a bit and make the exhaust note a tad deeper... but it will not get rid of raspiness.
like so^Comment
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The cat doesn't "make" the raspy sound at all...LMAO!! It's the engine that produces the sound in the first place...Originally posted by akkordlayinkit
Sure, if the cat has a baffle inside of it then it will get rid of of the rasp, but if it is a straight-through design then it will do nothing to change the raspy sound...that's the point I'm trying to make.
Ohhh, but I don't know anything, I just built my exhaust with my own two hands while you bought a pre-fabbed one...I'll leave it to you, the apparent "expert"...
Last edited by WeDgE; 12-14-2004, 02:48 AM.Comment
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In reply to DrLove'sKuDang's above post:
Yes, that's what I'm trying to get across...thank you.
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there was just a misunderstanding from the beginning. when you talked about a baffled cat, i was thinking of the perforated cores or the ones with louvers inside. ive always refered to the "real" cats internals as a honeycomb, or something to that affect... ive never heard anyone consider it a baffle.Last edited by DrLove'sKuDang; 12-14-2004, 02:49 AM.Comment
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From the beginning I was speaking about resonators, not cats...
This is what I am talking about when I say baffled resonator and this WILL get rid of raspiness.
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Also, above when I was speaking of "high flow cats" I thought you guys meant the eBay style that is straight-through. I've never dealt with cats, so I wouldn't know much about them...
I decided to go the cheaper route of installing a baffled resonator.
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well that drawing you made, isnt that just a muffler? thats how some of the magnaflow's and shit like that are constructed.
a resonator is the second pic i posted... which would be one with a perforated core. they also have louvered resonators like this..
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Nope, it looks just like the one you posted on the outside, but the inside is much different as shown in my picture.Comment
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