[JMMATT]

depends on how strict emissions laws are where you are, where I am I will need one to pass emissions tests, I also have heard if you don't get one it makes the car smell like gasoline. As long as you get a decent hi-flow cat you shouldn't lose any at all, and it will hopefully remove any rasp from the exhaust note. A lot of people put their hi-flow cats on flanges which can be easily removed and straight pipe put in to maximize gains.

 

[JMMATT]

I will be doing the headers install soon and have a catback exhaust but i will need to buy a 2.5 inch magnaflow High flow Cat.

there should be no measurement issues right because 2.5 is right for our Tibs?

yeah, 2.5" should be a good fit, it will also depend on the placement and piping of the headers but most of the headers I believe are also 2.5", I went with a Magnaflow metal hi-flo cat for my DC Headers which are going in on Friday, assuming everything goes as planned I will have clips for all of you.

 

[JMMATT]

I went with this cat and it worked out really well.

 

[JMMATT]

true, you don't at all, I think the difference is negligible and chances are I spent double the money for nothing but at the time I didn't want to cut any corners and it turned out well. My honest advice is just to go with whatever your budget allows.

 

[JMMATT]

for me it's not the rasp that's killing me, the cat took care of that, it's just the drone- anything above 2500 and downshifting gives me the biggest headache, I just bought the Magnaflow muffler that Mr. Photoman wrote a thread about and I'm hoping that'll take care of it.

 

[JMMATT]

i dont know about that design im almost positive that design is more disruptive then the standard both sides flare out and come back together design. Also the metallic substrate is higher flowing alternative to the standard $50 flowmaster ones and the way one should go. Personally i run a Dynatec PowerCat which is also a metallic substrate cat.

Actually the shape of it helped it to work out perfectly, I agree with you that it appears to be an awkward shape but I'll take a picture maybe tomorrow to show you- it actually worked out very well for me and I added a Magnaflow muffler (PN 11216) to remove all drone, I'm loving the setup right now whereas a week ago I couldn't even drive my car because it was embarrassingly loud.