Catted Y pipe for BBK Headers?
Thread Starter
TECH Regular
Joined: Apr 2010
Posts: 464
Likes: 1
From: California
Catted Y pipe for BBK Headers? Outside of chopping up a y pipe and welding cats in, is there a catted y pipe that would fit nice with BBK's 1 3/4's headers?
I have a GMMG catback thats the only reason why i'm going with a catted y pipe instead of ory.
I have a GMMG catback thats the only reason why i'm going with a catted y pipe instead of ory.
So are you just wanting to add cats to keep the GMMG catback sounding good?
If you do then just add a Magnaflow Spun highflow cat (#59959) right at the end of the y-pipe merger.
If you do then just add a Magnaflow Spun highflow cat (#59959) right at the end of the y-pipe merger.
Last edited by 99Bluz28; Mar 12, 2012 at 09:41 PM.
Thread Starter
TECH Regular
Joined: Apr 2010
Posts: 464
Likes: 1
From: California
Yeah I drive a lot and don't want this thing insanely loud and unbearable. I've driven an F body before with GMMG no cats and it was like NASCAR at all RPM's, lol. Sounded like **** to me at the time.
Cam, manifolds, cats, and GMMG sounds perfect to me right now, but those extra ponies are desired.
Joined: Nov 2003
Posts: 6,216
Likes: 236
From: Wichita KS / Rancho San Diego
I wouldn't go with one cat - too restrictive. I'd hack the BBK Y and install two. And then a bullet muffler or powerstick in the I.
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Thread Starter
TECH Regular
Joined: Apr 2010
Posts: 464
Likes: 1
From: California
I tried ORY with my GMMG and you said it - insanely loud and unbearable. Horrible rasp. I went to a custom 2.5" catted Y and that wasn't enough. It took a powerstick in the I and resonator tips to get it toned down.
I wouldn't go with one cat - too restrictive. I'd hack the BBK Y and install two. And then a bullet muffler or powerstick in the I.
I wouldn't go with one cat - too restrictive. I'd hack the BBK Y and install two. And then a bullet muffler or powerstick in the I.
Everyone bows to the GMMG, and don't get me wrong I love it the way it sits right now...BUT it sounds like **** if not properly set up.
I think I'll follow your advice on this and go with two of those magnaflow cats along with the powerstick.
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Verdad Gallardo Joined: Nov 2003
Posts: 6,216
Likes: 236
From: Wichita KS / Rancho San Diego
Yep, like you, l loved my GMMG when I was on stock manifolds/cats. When I installed the LT's, I was stunned that something that sounded so pretty could sound so ugly.
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Joined: Sep 2011
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From: springfield, mo
hello can anyone tell me if i can run the stock y pipe with bbk long tubes bc the bbk y pipe is too short and the same size as my bbk, and also i was just going to run a open y pipe for the time being if the oem y pipe will not fit the bbk headers will i have any problems with hurting valves...
thanks
thanks
can anyone tell me if i can run the stock y pipe with bbk long tubes bc the bbk y pipe is too short and the same size as my bbk, and also i was just going to run a open y pipe for the time being if the oem y pipe will not fit the bbk headers will i have any problems with hurting valves...
thanks
thanks
