Riviera exhaust performance.

[Guest ekvh]

Has anyone done it? and if so, what did you feel the gains were performance, and fuel economy? I have read previous posts about exhaust and mufflers and all. I am ready for at least a new muffler. I am wondering how much an 88 would improve performance-wise by switching to a 92 Riviera exhaust including the manifolds. It would breathe better on the way out.

[padgett]

I found that some "C" engine exhaust manifolds were very restictive but the entire system is limited on breathing. To fix just one piece is not going to help much.

[Guest ekvh]

What about exhaust all the way back including the manifolds from the 2.5 in system? I like my Reatta, but if I had to switch the intake too and all the related, it's not worth it because my car is a DD and a beater.

[padgett]

If I needed to replace everything, I'd probably upgrade but not just to do it.

[Guest ekvh]

I am close to that point, I can weld up my muffler. I will see if I can get lucky and find a donor in decent shape, otherwise it's too expensive. Mine sure is loud with just the catalytic converter on it. I will put the old one on unless it has chunks coming out of it.

[handmedownreatta]

block hugger headers are available for the buick v6 but probably hit something in a front wheel drive car.