pjw72

Not sure exactly what butterfly valve they were referring too. When I hit my sport button it gets much louder, something is def changing in the exhaust. I was told by the dealer it only has sport chrono and not the PSE, but they may have been wrong.

This is my first Porsche and I am disappointed I waited this long :-)

What is an 'exhaust butterfly valve'? If your car doesn't have a PSE then the exhaust system is 100% passive (ie no valves). I think there is a valve of sorts in the intake system that makes the motor 'rattle' a bit when it's fired up. It closes when the fuel or air is purged.

The recall you might be referring to could be the 'exhaust tips' one. Porsche recalled early VIN's due to a poor weld on the exhaust tip assembly. They were afraid it might cause the tip or tips to fall off and cause a problem to trailing cars. Have your dealer do a search in their computer system by your VIN to see what recalls have been done or should be done.

Congratulations on your purchase. I own a 2005 997S as well and love it.

I purchased a CPO 2005 911 S cab with low mileage and an exhaust rattle that seems to occur around 2500 rpm and half throttle. Doesn't seem to happen if I drive it in sport mode. Dealer sprayed some lube on the exhaust butterfly valve - made it a little less common, but still there. I do not have PSE, just sport chrono.

I read about a recall on the early 2005 exhausts, but cannot find the recall section on this site (if there is one - only found the TSB section but no recall info). Also, searched the forums but can not find any info, so I am sorry if this is a repeat question.

Can anyone help?

thanks

Josh