Mudfrog, sent a email to performance curve and just PM'ed you. I tried calling this afternoon as well. Just need a little assistance getting all the right pieces together for a 01 XJ and then I'll be ready to place an order. Please contact me.

 

Out of the mufflers you offer, which is the quietest with your system?
thanks.

 

Any one know if my downpipe on my 98 is 2.5? Yeah I'm getting one too.....lol

 

I posted a link on here, it lists the muffler and how loud they are. Did you view it?

 

What converter did you go with? I am getting ready to place an order for the magnaflow muffler and tailpipe they bend. I also need a converter but don't know much about them so need some info and/or suggestions.

 

I ordered one of their ceramic spin cats with the magnaflow muffler, it fits fine, we had the muffler on backwards

 

What about the ceramic spin cat did you like over the other that made you decide on that one.

What is the difference between a spin cat and a regular one?

 

I've got no clue...

 

Has anyone bought the two cats behind the manifold from performance curve?

I'm thinking of replacing my entire exhaust from the manifold back. I'm researching now but would like to get any opinions you guys have as to what to go with because I dont know much about them.

It doesn't state the manufacturer of it on the website.

I keep getting the P0420 code and the u2 sensors have been replaced. I'm pretty sure it only throws the code at idle because both times it lights up I am idling.

 

Post #491

 

Honestly the only thing i was looking at was the price tag. A high flow converter for just over $30 seems unreal. I'm not sure what the difference is between the two, but the spin cat is very small compared to a regular converters which made it easier to work with.

 

I am ordering this kit today but need to know what diameter exhaust hanger I need.

I don't have calipers or a tape measure so I'm not sure.

Anybody know what size hangers I need? I am only do from the cat back.

Thanks I'm advance.

P.S. I tried calling Performance Curve but I never get an answer and it usually takes them a couple days to respond via email.

 

I don't know the diameter right off hand but it seems that most people use part number BR91914. It will come down to what style your factory rear hanger is though.

 

Had this kit for about 2 months now. Great kit for the price
Remember this is a UNIVERSAL KIT...so it doesn't fit absolutely perfect.

I do recommend getting a new CAT when getting this kit, it goes well and getting an all new exhaust system will benefit you much more than just getting the cat back kit

Really the only con about the universal pipe is that it may hit your stock bumper, shackle/ leaf spring, or the little piece of sheet metal covering your gas tank.

Simple modifications only. But for the price, this is the best kit you can buy. Do it!

 

Anyone get the AP Turbo or Thunderbolt muffler? If so how do they sound?