thinking about getting a blitz nur spec are for my sti blob. iam also wanting to fit a decat downpipe aswel. now the blitz narrows down to a 2.5 inch bore to join the downpipe? but if i have a 3inch downpipe guessing that would not fit? ive seached but cant find if blitz do a full 3inch system all the way through including the downpipe join? or would i have to get a 2.5 inch decat downpipe?

 

I was under the impression that all Blitz Nur Spec R's are 3" I believe its the Nur Spec S that is 2.5"?

I have a Blitz Nur Spec R and it is 3" all the way and connects to my Japspeed 3" downpipe.

 

I have the blitz nur spec r on my Blob. It did narrow down to 2.5inch at the flange but the actual flange is a 3inch reduced internally. I had an exhaust shop cut and weld mine so it's 3inch straight through for £30.