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.
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
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
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.
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.
We had it at 14-15psi at FM the first time.

I'd say at this point... if you're going to do it, do it right. Whole new exhaust. BeGi SGDP, 3" Enthuza.
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.
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.








