The current pipe is 2.5" all the way through.
I realize that the bends are compression bends, but there are no mandrel benders in the state of Texas, and the smallest part of the tube is still greater than 2.25"
Thanks to Troy and the crew at Muffin Muffler Shop 4818 Burnet Road, (512) 453-5287 for the great job fabricating this from scratch.
According to VAG-COM I picked up about 10 horsepower at the flywheel with the new exhaust
Stock Center Resonator
The bend over the rear axle
The stock muffler
Comparison of old 1 5/8" inlet downpipe compared to new 2.5" downpipe
New downpipe and catalyst
EGT Sensor mounted to downpipe
Stock muffler vs Magnaflow Muffler
Stock Center Resonator and piping
The New Tip!
The new center resonator, a 2.5" core glass-pack run in reverse flow mode for better flow
Stock catalyst remounted into new piping
Magnaflow in place
The Tip from another angle
The whole undercar system