sorry misunderstood the question, however all the replies answer my questions, thanks for the knowledge.

 

What everyone is saying is that, Yes the CAT is very restricive, but if you don't a least upgrade your stock exhaust then your kinda pissin in the wind. the TP is not going to give you the same results as someone else that has a turbo back exhaust. Lets look at this like an assembly line

first operation you have 10 guys working - Turbo
second operation you have 20 guys working - TP
third operation you have 8 guys working - stock exhaust -

does adding more guys to the middle get you any more output in the end - yeah you can work the hell out of the 8 poor bastards and get a little more out of them, but soon they are gonna form a union and strike aginst you - then you have deal with the government and..........nevermind - I think I've made my point

 

Okay I appreciate your point, it helps when you spell it out to new guys like me. Considering I am having cat issues anyway, would it still work to do the TP for now, and then exhaust in the near future, or will my union workers go on strike before I have a chance to improve working conditions?

 

will it turn the check engine light on?

and to akielb, I dont want to throw a ton of money into an exhaust right now and im just looking to free up a couple extra possible pounds of boost. im just thinking the cat is holdingthe turbo back.I also dont want a fart pipe sound either.I hate those sounds. Id rather it be quiet or close to it.

 

Just put a test pipe on about 2 weeks ago. Absolutely love it!! Feels like alot more hp than I was expecting. Do the nonfouler mod and you wont get a cel.