87stanggt87

Hey, I've been reading these forums for awhile now but I've never posted. I finally have some money to spend on my 87 GT and was wondering if there is a big difference in sound or performance between an off road or catted h pipe. I think I've read that the off road will be louder, but is there any real performance difference between the two. I know exhaust doesn't really give you any significant HP gains, but I wanted to know anyway. I wanted to know this before I ordered headers and a cat back so I can save a few bucks on shipping.

On a completely unrelated note, are there any parts on a '92 LX 4 banger that are interchangable or would be a good upgrade for my car? I'm only asking because my brother got into an accident with it and I want to take anthing worthwhile off of it before it gets junked.

Thanks for any replies in advance.

Dath

O/R will sound and perform better. I wouldn't use cats unless you need to for emissions test.

87stanggt87

I do have emissions, as I live in PA. I should have said that in my first post. Is there enough of a difference thats its worth changing the stock midpipe back in for emissions tests once a year? Thanks for the reply

Stevens91gt

ehh maybe, maybe not

its not too hard or time consuming to switch it once a year

joshafmil

find out how harsh the testing is... if your car is an 87 it may be exampt... or the emissions standards could be so low it doesnt matter.

for many states... once it passes a certain age, they wont care much anymore

7upedition

off road = better, emissions usually are cut off after '97, at least in NY, check w/ a liscensed inspector on the criteria, if possible go with off road, sounds better

88BlueGT

Like everyone else said, they are louder and they do give you a little extra hp. Im talking like 2 extra hp. I think the main reason for people buying them is that they are also usually half the price of a catted mid pipe.

7upedition

^+1.... very true

88BlueGT

I know thats why I baught mine!

87stanggt87

Thanks for the replies.