2nd Cat deleted and no difference???
 

Just a note. I took off the second cats and I am running the factory exhaust on a 2000 Boxster S and I notice no real difference in sound or performance. I put on the Fab Speed 2nd Cat delete pipes. Huge difference in weight though. I am probably going to change the exhaust next, leaning towards the GHL system. Any Pros or Cons with the GHL system?

GHL,Top Speed,Maxspeed all the same........only street styled exhaust proven to give +5hp on a dyno,almost 1/2 the weight of the OEM muffler BUT resonance.....some people can take it,some can't.

I personally don't find it annoying one bit,but I'm always blasting the radio or have the top down.

Few changes in and of themselves are going to add noticeable HP changes except I did really feel a difference with headers. Add it all up intake, exhaust, and chip tuning and you will definately notice the gain.

Steve any idea what you run in 1/4?

I have no idea. Never have had an opportunity to time it accurately. I would guess that if one used a baseline of 14.0 for a stock S and all other things being equal including the driver the car would probably be about 13.8. Most of the extra power is in top end HP not low end torque. On a road course it is awesome.