Top Post Dawg
- Aug 8, 2004
- Menomonee Falls, Wisconsin, USA
- 03 Jetta, 03 TT TDI
Doesn't your 2?5? turbo have a 3" V band flange on it already? A 3" DP is really not all that hard to make - just need to put the flex in the CAT tunnel instead of over the steering rack.IndigoBlueWagon said:Great ideas, thanks. I am still thinking of a 2.5" stainless DP to the CAT, a 3.5" cat, I'm betting I could come out of the cat, go to 3" or even back to 2.5", and then within a foot or so sleeve clamp on aluminum pipe for the rest of the run. I really like that idea. If I go 2.5" I probably won't use a muffler at all: My wagon is quiet without one, only starts a bit of a drone at 90+.
I know my 2.5" hits the bolt heads for the rear bar if it's not adjusted just right, and I had to swap the bolts so the heads are on the top to reduce the amount of space they take up. The bar's coming out of the car anyway so that won't be a problem, and maybe I can run a 3" all the way back.
Someday I'll take the EMP measurements on various downpipes so we can stop all this speculation - maybe this spring/summer when it's warmer out
Even if you have to put a dent in the bend going over the axle (or squeeze the cross beam together a little bit) would be better than running 2.5 all the way in my opinion.