Just ordered a Blitz Nur spec R from the states for my 2003 STI

Its the back box and also a pipe going to the front.
Will this fit onto my down pipe or will it fit onto the section with the cat after the downpipe??

Question Im asking really, is, will this fit straight on where I take the old system off or will i need a down pipe too?? or some other kind of pipe....

Thanks

 

If you have a UK car -

UK cars have a downpipe (with cat), cold start cat pipe, centre section and backbox.

Nurspec R will replace backbox and centre section only, so you will need a link pipe to replace the cold start cat pipe. You can get these from JW Racing, the lambda sensor screws into the new link pipe.

If you have a JDM it will go straight on as the JDM's have a longer downpipe with no cold start section.

NB, this info is from my old 02 STi, but I'm fairly sure nothing changed on your year.

 

Thanks Gooner