Hey guys just put on my exhaust was just wondering is their only one resonator?
What kind of a cat should I get I don't want anything that i have to weld.

 

I just put on the Random Technology high flow cat from Excelerate. Check the Black Market.

 

Not to be a Debby Downer or anything but why do you need a high flow cat? Our cars have pretty free-flowing exhaust systems. Unless you're planning a turbo/sc setup it probably wont make a big difference in your power output.

 

Well on a Type S motor the headers produce 25-30whp and the stock cat is 900 cell. The catback exhaust on the Type S is pretty free flowing but the rest of the components aren't. There are gains to be had with both the headers and cats.

 

I had headers to hi flow cat to full exhaust....Much more air flow.

 

any dyno proof?

 

Does anyone know how a high flow cat will affect the sound on the TL? I had high-flow cats on my Rx-7 and it made it a whole lot louder.

No matter how well the rest of the exhaust flows, the cat is the bottleneck on every exhaust of every car that has one. If you were to pull it off entirely and run it on the Dyno you would see a huge increase in power, probably similar to what you get from putting on headers, but pulling them off entirely is a federal crime so I wouldn't recommend it. High-flow cats are the next best thing since they allow your car to breathe but still keep you legal.

 

No it does change the sound significantly. It is a little deeper but nothing harsh at all.

 

I have headers, RT Cat and catback exhaust. After the RT Cat was installed it did make the exhaust a little louder and deeper, which was just fine by me. It sounds really mean now.