I seen a AP titanium exhaust on the rx7store.com and it has 2 pipes and a muffler does this mean it goes further back then just the normal catback systems??

 

I believe it comes with a midpipe too. The description says

"The system includes the cat delete pipe for those racers wanting more horsepower and sound. The center pipe features a resonator to get the perfect tone and includes the bung for the factory O2 sensor."

Also, I think only the tips are titanium. The rest is stainless steel.

 

Don't be fooled by the name though. The description says that it is a 304 stainless steel exhaust yet the name says Titanium.... Really nice looking exhaust though. I am going to consider this one when my funds allow for it.