I just put my new exhaust on its a 2.5 inch cat back mgan flow dual ovaled tip. I was gonna buy a header soon and was wondering if i should buy a high flow cat when i replace the header as well?

 

A cat is a cat from what I heard. It wouldn't hurt to get a high flow cat but it wont make much of an improvement. Which header are you looking at?

 

i beg to differ......after a header ur cat is just another restriction i always thought the reason u dont get much gain from the header is because the cat is huge and its not very highflowing, a mechanic told me this, he said if u put a header plus a highflow cat ull get good gains, its just like the intake and the intake manifold...picture the header as an intake, sure it gives u hp, but when it goes into the cat (the intake manifold) itll be restricted....i know for my breathing system im going intake, intake manifold, header and cat, and then finally exhaust, i already have intake, header, and exhaust, so i need intake manifold and cat..

p.s..Is the Indy Manifold the only one available for the 2nd gen neon's if it is, are they good??

 

I was looking at either a pacestetter or an OBX

 

go obx and take out the cat and roll with straight pipes. yeah **** will knock ur socks off, but dont forget to fool the o2 sensor. but i am sorry to hear u got 2.5 inch piping and dual tips. first off ur car doesn't have a turbo, 2.5 inch piping is what they use on stock turbo cars, and they usually upgrade to 3inches. Neons have stock 2 icnd piping, u should have ugraded to 2.25 for best hp gains from a cat back, also the dual tips is not going to get as better hp as a single outlet especially cause it's just a 4 banger, bot not v6 or v8. I hate it when people make custom dual exhaust cuase it's stupid for 4 bangers plus it doesn't add more hp with two mufflers or two tips.

 

A mechanic also told me a cat was a cat. It should help though.

 

Alright thanks for the help i decided on the obx

 

That is true, but the high flows are a little better and a new one is not gonna be clogged, the old one might be,