fourcircle
nj
I knew my cats were on the way out (a popular issue with the 3.0) and I didn't much feel like paying 2 grand to the dealer for a pair of new ones. So about 18 months ago I picked up a new pair of S8 cats from someone I know (a real gent actually) in the hope I could use them at some point.
Then, a few weeks ago I found someone in the UK selling an unused milltek for an S4 for half retail price (he bought the milltek and killed the s4 before having a chance to fit it I think) so I bought it, couriered it out here and spoke to a nice bloke Jani Itkonen www.itkonenracing.fi who has done work for me before. The old cats are made up of a single unit each side - downpipe, pre-cat and main cat. Jani cut off the cats and fitted the S8 cats instead. ****** good job too as they're a bit bigger than the originals. And of course he fitted the Milltek too, which is a bolt together job.
I'm not sure about how much the 100mm tips protrude so I might look into shortening them a bit. They slide onto the stub that protrudes from the back boxes and then a wraparound bracket bolts up tight. I think if I cut a bit off I could weld on the tips or use a thinner bracket.
I'm chuffed with the sound but it's very noisy inside from about 1800 rpm up to 2500 rpm. I wonder if I need resonated centre pipes instead of the unresonated that came with the system ?
Worth noting that the cat back system for the B6 S4 is the same for the B6 3.0 quattro, as confirmed by Milltek before I bought it
pics below and then a couple of videos
Videos - probably a bit pointless without headphones
startup YouTube - P1070183.MOV
drive past YouTube - P1070172
Then, a few weeks ago I found someone in the UK selling an unused milltek for an S4 for half retail price (he bought the milltek and killed the s4 before having a chance to fit it I think) so I bought it, couriered it out here and spoke to a nice bloke Jani Itkonen www.itkonenracing.fi who has done work for me before. The old cats are made up of a single unit each side - downpipe, pre-cat and main cat. Jani cut off the cats and fitted the S8 cats instead. ****** good job too as they're a bit bigger than the originals. And of course he fitted the Milltek too, which is a bolt together job.
I'm not sure about how much the 100mm tips protrude so I might look into shortening them a bit. They slide onto the stub that protrudes from the back boxes and then a wraparound bracket bolts up tight. I think if I cut a bit off I could weld on the tips or use a thinner bracket.
I'm chuffed with the sound but it's very noisy inside from about 1800 rpm up to 2500 rpm. I wonder if I need resonated centre pipes instead of the unresonated that came with the system ?
Worth noting that the cat back system for the B6 S4 is the same for the B6 3.0 quattro, as confirmed by Milltek before I bought it
pics below and then a couple of videos
Videos - probably a bit pointless without headphones
startup YouTube - P1070183.MOV
drive past YouTube - P1070172