I have a porsche 944 and I‘m replacing the exhaust manifold because it blew up. Anyone know any set ups to get the most horsepower legally, i live in virginia if the pollution rules apply
I believe any modification to exhaust systems are illegal in Virginia, Maryland, and D.C. But people do it anyways. Removing the cataltyic converter and replacing it with a straight pipe a.k.a. bypass pipes will yield the most power. But that is illegal everywhere. It will cause your check engine light to come on. And you won't pass emissions testing. Just get a performance exhaust system and a new exhaust manifold.
Is the new evolution flat iron pure ceremic plates. Is that a good brand?
