SPT catback exhaust specs

[ajmilano]

I was looking at using an SPT catback exhaust to complete my exhaust system. Right now I have a Helix catted downpipe. I would like to have 3" from the turbo back. I heard that the SPT is a 3" exhaust but that the midpipe tapers to 2.5" to mate with the stock downpipe. If this is true it seems like it would defeat the purpose of putting in a bigger exhaust because there would be a bottleneck in the middle of the system. Is this a bad choice for a catback? because it seems that they can be picked up used for cheaper then other catback setups and i have heard good things about the way they sound.

[Z/WRX]

The SPT exhuast does tapper right at the flange where it meets the downpipe. All you have to do is take it to a muffler shop, have them cut the flange off the spt pipe and weld on a 3 inch and you are good to go. that is what others have done that have the SPT exhuast that want 3inch all the way.

[ajmilano]

Does anyone have any idea on the cost of having it welded to 3" and also how do you attach it to the downpipe if the coupling is cut off?

[WReXd]

I would hardly call that thing a taper. It's probably like 2.8-2.9". The spt was made to run on either flat flange or donut gasket, so imo the "taper" is not worth fiddling with. Btw, I really liked how mine looked and sounded too.

[BithellWgn06]

Does anyone have sound clips?
+1 for the used exhaust.