Cat Bypass Pipes Anyone Using Them?

[ronster]

Is anyone using cat bypass pipes on their 986? What brand are you using? What is your impression of them? Has noise become an issue since installing them? Smog test issues?
Did a search here and didn't find anything recent and I'm considering them for my '99 986 2.5L.

[ProjectM96]

I read about people installing them in 986forum.

Fabspeed secondary bypass pipes.

NO CEL light or inspection issues as long as you re-install the oxygen sensors in the right place.
From what I hear, they improve sound and the power is noticeable, but not very noticeable.

I will get one from them as soon as I get the money.

[JMatta]

I have Fabspeed secondary bypass pipes installed, along with a sport muffler. Improved sound quite a bit...raspy, kind of like a Jr GT3RS, but no drone, resonance or CEL. Everyone comments on how great my car sounds from a stock exhaust.

I don't know if power has been increased, but the aural pleasure is well worth it. I also have an Evo Hi-Flo intake and the engine just revs more freely with this combination. It used to hesitate on downshift blips, but now the blips are nearly instantaneous.

[ronster]

Originally Posted by JMatta

I have Fabspeed secondary bypass pipes installed, along with a sport muffler. Improved sound quite a bit...raspy, kind of like a Jr GT3RS, but no drone, resonance or CEL. Everyone comments on how great my car sounds from a stock exhaust.

I don't know if power has been increased, but the aural pleasure is well worth it. I also have an Evo Hi-Flo intake and the engine just revs more freely with this combination. It used to hesitate on downshift blips, but now the blips are nearly instantaneous.

Thanks JMatta I've also got the EVO CAI and love the intake growl. The cat bypass pipes are looking like a good investment.

[ronster]

Well this certainly falls under the embarrassment category, I dusted off my Bentley's manual to discover the 2.5L only has one set of cats to start with so there is nothing that can be bypassed unless it is a track only car. Two cats started in 2000.