When does the cat become a restriction?
04-29-2014, 10:16 AM
#1
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When does the cat become a restriction?
So I have a Blouch powered MSM with most of the FM big enchilada junk. I have noticed now that the top down weather is here that when I step into it, the exhaust completely loses its tone and only produces a loud "whoosh". I have the FM 2.5" downpipe with cat and the FM MSM exhaust.
At what point does the 2.5" ceramic core cat become a restriction in earnest?
FWIW I am running ~15 lbs of boost with ~13º timing in the midrange rising to ~15º at redline.
At what point does the 2.5" ceramic core cat become a restriction in earnest?
FWIW I am running ~15 lbs of boost with ~13º timing in the midrange rising to ~15º at redline.
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04-29-2014, 10:24 AM
#3
lol the question is how much of a restriction, not if its a restriction.
probably not too much on your setup, but obviously a full 3" catless would yield moar power
that loud WHOOSH is awesome-sauce though, I pretty much try to achieve that on all my cars. absolutely amazing sound
probably not too much on your setup, but obviously a full 3" catless would yield moar power
that loud WHOOSH is awesome-sauce though, I pretty much try to achieve that on all my cars. absolutely amazing sound
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04-29-2014, 10:26 AM
#4
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lol the question is how much of a restriction, not if its a restriction.
probably not too much on your setup, but obviously a full 3" catless would yield moar power
that loud WHOOSH is awesome-sauce though, I pretty much try to achieve that on all my cars. absolutely amazing sound
probably not too much on your setup, but obviously a full 3" catless would yield moar power
that loud WHOOSH is awesome-sauce though, I pretty much try to achieve that on all my cars. absolutely amazing sound
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04-29-2014, 10:27 AM
#5
The sounds that car makes is pretty much it's best quality, honestly. It doesn't just sound like a "woosh" behind you, i promise. One of the smoothest sounding exhausts i've ever heard.
That said, i did kick around the idea of moving to the BeGi SGDP and doing the wastegate port work while i was in there. Should yield a decent bump in power (You know, just to make SURE you vent that block) and get you some more sound.
That said, i did kick around the idea of moving to the BeGi SGDP and doing the wastegate port work while i was in there. Should yield a decent bump in power (You know, just to make SURE you vent that block) and get you some more sound.
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04-29-2014, 10:29 AM
#6
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The sounds that car makes is pretty much it's best quality, honestly. It doesn't just sound like a "woosh" behind you, i promise. One of the smoothest sounding exhausts i've ever heard.
That said, i did kick around the idea of moving to the BeGi SGDP and doing the wastegate port work while i was in there. Should yield a decent bump in power (You know, just to make SURE you vent that block) and get you some more sound.
That said, i did kick around the idea of moving to the BeGi SGDP and doing the wastegate port work while i was in there. Should yield a decent bump in power (You know, just to make SURE you vent that block) and get you some more sound.
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04-29-2014, 10:41 AM
#9
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I've had a 2.5 catless downpipe and a metallic magnaflow cat sitting on the shelf since before I picked up the car from you. I just need the right motivation to weld the cat in and install it.
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04-29-2014, 01:04 PM
#18
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Because the IHI exhaust housing cannot deal with it and boost creep occurs. The easy fix is to run a cat of some type. The deal is that my downpipe has the ceramic substrate core which is not of the performance type.
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