[4ringkings]

After running into a bunch of faulty 3.0L catalytic converters on Audi B6 and C5 platforms, I realized the prices on the cats where super expensive and usually fail after another 80K to 100K of driving. I thought about a permanent, cost effective solution.

So we started to make test pipes for our customers and the results have been awesome.

3.0L "test" downpipes