Magnaflow cats

gmantheman · Dec 12, 2008

I had my magnaflow cats welded into my O/R prochamber. I guess I can't call it an O/R prochamber any more. The cats are more like kittens. I surprised how small they are-much smaller than stock cats. The appear to be about 12" long and less than 10" in diameter. I think it sounds a little deeper, but maybe not as loud. It doesn't sound as raw. Overall I guess it cleaned up the sound. The best part is no exhaust fume smell.

anthony05gt · Dec 13, 2008

How much for the cats?

gmantheman · Dec 13, 2008

Total came to $225 for the pair. I ordered them from a local shop called lastcall racing. I know both of the owners.

anthony05gt · Dec 13, 2008

I know a guy who wants to remove the stock cats and have me weld in high flow replacements.

gmantheman · Dec 13, 2008

I have no idea if that would work. I could be wrong, but since the high flow cats are shorter, it would not work because too much pipe would be cut out making the mid pipe to short to reach the manifold and over the axle pipe.

anthony05gt · Dec 13, 2008

Yeah, I know that. I was planning on using some stainless pipe and moving the cats back. I really don't feel like messing with it, but I will.

gmantheman · Dec 13, 2008

We thought about moving my cats back, but then we didn't want to worry about clearance issues. They may have been okay sitting parallel to the ground, but we didn't want to take any chances.

anthony05gt · Dec 14, 2008

My car has them back there with the JBA h-pipe. They are tucked away pretty good. I'm planning on the same location.

whyask · Dec 14, 2008

So in essence could you use the PYPES cats that go for 170.00 .... ?? I have an O/R X and the raspy trumpet IS KILLING ME with my flows.....

gmantheman · Dec 14, 2008

You could use the pypes cats. The cats didn't completely eliminate the trumpeting, but it did reduce it.

whyask · Dec 14, 2008

did it kill the sound or is it still like ..."damn thats sic...." ..??

gmantheman · Dec 14, 2008

Didn't kill the sound at all. I guess it's a little more refined.

ptfoxbdy89 · Dec 15, 2008

you know these cars have high flow cats in them stock right??

gmantheman · Dec 15, 2008

ptfoxbdy89 said:
you know these cars have high flow cats in them stock right??

These cats are welded into a Prochamber. I was running an O/R prochamber for a little while before going to a catted prochamber. I didn't want to cut both the prochamber and stock h pipe and splice them into each other and into the stock cats. This way I still have my stock H and cats and a prochamber with high flow cats. Stock H and cats with magnapacks sound good, but prochamber with high flow cats sound even better.

anthony05gt · Dec 15, 2008

ptfoxbdy89 said:
you know these cars have high flow cats in them stock right??

I wouldn't say that. I can see through the JBA high flow cats, but couldn't see through the stock ones.

ptfoxbdy89 · Dec 15, 2008

anthony05gt said:
I wouldn't say that. I can see through the JBA high flow cats, but couldn't see through the stock ones.

guess i worded that wrong compared with like all other applications.. they are high flow cats considering other mustangs with stock cats and such.. guess i wouldn't have spent the money a mid muffler set up would fix up a raspy h or x pipe if that was the reason.. or maybe you have emissions there?? anyway just my .02

gmantheman · Dec 15, 2008

More of emissions. Here in Cali it can be a big fine if you don't have cats. I was a little worried when I drove my car, especially around cops. The cats didn't change the sound too much. I think it's just as loud as the O/R prochamber. It didn't eliminate the trumpeting but it did reduce it.

ptfoxbdy89 · Dec 15, 2008

lol don't be scared i like the sound of loud mustangs... btw i am the cops!!

gmantheman · Dec 15, 2008

Not scared of how loud the car is, but what I am scared of is paying the hvy fine for not having cats. With this states economic woes, I wouldn't be surprised if the fine was over $2k for not having cats.

ptfoxbdy89 · Dec 16, 2008

guess i always got away with it as a kid lol mississippi doesn't care if you have straight headers or cut outs lol as long as the horn works and the tint isn't under 27% and i know i had a few with just straight pipes

Magnaflow cats

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