no get a three inch.

a two and half will be ok but a three inch will give you alot better results. if your going to spend this kind of money and build your car don't half a$$ it and do it right.

the reason I say this is because like everyone you will get tired of only 8-10 psi. you will go bigger boost, biger turbo and eventually you will need a three inch. so just do it the first time and then you won't have to worry about a second exhaust system.

just my advice from my experiance's.

 

oh yeah it makes sense so what kind of exhaust system are there at a 3 inch??

 

/\/\ custom. 2.5" is sufficant IMO

 

Thanks for all your help guys

 

it is suffentiant. but in my experiance you should just make your plans of what you will do in the long run so you don't spend twice the money and get ____ed off later down the road.

I have the megan 2.5" and I will be running it when I go turbo. probably won't change untill I build the engine and want more power.

I think its plenty of effient untill you reach over 15 pounds. just my opinoin. I know there are several people that disagree.

thats actaully one of my regrets cause I planed on going supercharger and once I got my exhaust decided to go turbo.
cause I know I will be changing it down the road. oh-well.