Just a qiuck question,my friend has got a 94 WRx same as mine but
with a 3inch bellmouth decat into a 2.5 centre section and 2.5 rear box with jap style tip, at what stage does it need to be swapped out for a full 3in system?
can 290-310bhp be achived on this set up?

thanks benji

 

290 - 310 can be achieved on a std exhaust set up with good supporting mods ,so no need to worry about your current set up at the moment imho.If your thinking of going up and above 350+ bhp then a 3' system might be worth it.Having said that there are people running 400 bhp on a 2.5 ' systems quite comfortably.

 

Thanks he will be chuffed with that then,

 

but 3"sounds good

 

Yes ,but just depends on the system , I recently had a 3' miltek system fitted and it does sound nice when your giving it plenty ,but it don't sound anything like my 2.5' afterburner vortex @ 4000rpm. IMHO it's not the noise it makes , its the sound that it makes
Miltek is great , vortex is awesome

 

http://www.youtube.com/watch?v=bKlYMY2cq0w

http://www.youtube.com/watch?v=Tj01K...eature=related

thats a 3.5inch from turbo

 

It does sound ok ,but no louder than some 3' systems out there :

http://www.youtube.com/watch?v=M28ZmunxPUY

Or even a few 2.5' systems :

It just depends on what you choose

 

that sounds nice mine has no box's bar the back box you can hear it start up at the other side of the estate lol