My freind has a 96 z28 and bought a flowmaster catback system for it about 6 months ago, now hes taking it off cause he bought a header set with the dual cat setup, I was wondering if a 4th gen catback would fit my 91 rs, since hes jsut giving it to me for the taking, any help would be appreciated thanks

 

you can make it fit but it would be wothless, go aftermarket.

 

I did it from the cat back and it was pretty easy

 

It is aftermarket, its flowmaster, How hard of a time did you have putting it on?

 

You'll nead a hoist or a lotta ***** so you can jack the car about five feet in the air and get under it.It took a bit of monkeying around, but after I got it in I just had to wire it in place,drive to Midas and have them weld a 10 inch pipe the tie it all together.But I have a custom Y pipe.Is yours stock?I think I would test fit it before you buy it.But if it's really cheap buy it,and then the worst case scenerio would be you get a muffler out of it.

 

I have hedman headers and a custom y pipe right now, I believe the y pipe works its way down to 2 1/2 inches for some reason, and thats all I have now, cause Id like to by pass the cat.

 

Well there's only one way to know for sure if it will work, so the best of luck to ya.

 

if theres a will theres a way =)

 

4thgen exaust will be the same except possible different hanger location and that 4thgen exaust doesn't go as far to the front of the car. The 3rgen catback twists to the passanger side of the car to connect to the cat under the passangers feet. The 4thgen is a lot shorter because insted the Y pipe ending at the passangers feet, it goes around the transmission.

see how the pipe ends straight
now look at thirdgen style: it curves to the right to get to the cat.


There are variations in 4thgen style because the early ones were very much like thridgens with 1 cat. The later 4thgens with 2 cats should be how I described with the Y pipe going around the transmission.

 

Thanks for the help tas, so it ll take a lil bit of doctoring up, you think midas would install a pipe for it or no?




WHAT?!?!

 

Midas will but they won't have have a 3" mandrel bent pipe unless you shove the dynomax part numbers in their face. They were pretty clueless with they did my rear section exaust. I wish I just got a catback and did it myself. You can get half of the dynomax 3" I pipe if you get the 4thgen cat back cheap enough. It will run from the cat and angle up to go over the axle. Or you can go to a GOOD muffler shop and see what they can do for you.
:hail: :lala: