jthunderz28

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.

99Bluz28

iTrader: (35)

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.

14k

^^^^ thats what i did.

Blk98Vert

iTrader: (2)

No their y pipe is proprietary you have to do it yourself

jthunderz28

So 1 cat would be enough?

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.

99Bluz28

iTrader: (35)

I think it should be enough.

RevGTO

iTrader: (12)

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.

jthunderz28

Good to know I wasn't the only one that thought it sounded like that.
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.

RevGTO

iTrader: (12)

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.

Bluepitbull

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

LoneGunman

iTrader: (2)

No! You have to use the BBK y-pipe, the stocker won't work.