mondols1

iTrader: (2)

like the title says i want to add cats to my ory. i measured the circumference of my y at the 3 bolt flange and down and it was 9.75 inches which if i remember right i need to divide that by 3.142 (pi) to come up with a 3.10 inch diameter. so the .10 must account for the material thickness? so i believe i need a cat with 3 inch inlet and outlet, does that sound like the right size? also are there any cats that are short like the magnaflows that are a good low cost alternative?

hitmanws6

iTrader: (20)

google thunderbolt metallic cats. they are 110 plus shipping

tspence45

iTrader: (30)

Metallic spun Magnaflows are only $95+shipping through Summit.

hlaalu

iTrader: (3)

oh they are cheaper than that unless you mean for both of them.

http://www.performance-curve.com/ind...OD&ProdID=1181

I had these ones on a y-pipe i made, they passed smog just fine too

hitmanws6

iTrader: (20)

exactly what i was referring to

hlaalu

iTrader: (3)

yea these cats are great, you can cut off the ends so they fit pretty much wherever you want them.

tspence45

iTrader: (30)

Damn. That is a good price. I'm thinking about buying some to throw on my H-pipe I'm having fabbed, just to tame it down a little, and make sure there's no rasp at all.

mondols1

iTrader: (2)

i'm going with those just because of the price. i just hope they flow good and dont choke things off.

jimmypop13

iTrader: (17)

I wouldn't worry about it cutting down much on airflow. I have the magnaflow version on my 3" x-pipe and the setup is still somewhat raspy.