A little background on the system:
- The system does away with pre-cats, and there are options for 100 cell or 200 cell main cats. I went with 200 cell, as per OEM.
- It incorporates an X crossover just behind the cats
- It's 2.5" throughout, mandrel bent
- The valves are bentley ones, and should be more reliable than the OEM ones, which we all know are prone to getting stuck.
- In terms of cost - the full system is £2.2K + VAT. A catback is £1.8K + VAT. Factor in upto £150 extra if manifold studs snap.
- JC Weldfab will need your car for a few days (in my case a week as it spanned a bank holiday weekend)
To say I'm pleased with it is an understatement. I'm looking for excuses to drive the car just so I can get those exhaust valves open and hear that noise!
There are plenty of good sounding exhausts for the RS4 out there, but the thing I love about this is the jekyll and hyde difference between exhaust valves closed and open.
With valves closed, it's a little louder than my old setup (pre-cat delete, x-centre section, and valves stuck open), but still fine with wife and kids. It's about as loud as I can get away with for the family, and there is a little drone at 2K revs - but it's acceptable.
With valves open though - just wow!!! It certainly gets heads turning. The valves open >4K revs in gears 1 to 3, and throughout the rev range in gears 4 upwards.
I've tried to capture the difference between valves open/closed in this vid, under a variety of scenarios and from different angles - but a video only captures so much. My equipment isn't great either! However, I hope it gives you the idea.
Enjoy!
http://jcweldfab.co.uk
