I'm no expert on the RCZ but I've done a fair bit of modding to my XKR, including exhaust mods and performance tuning. Naturally I've started looking at some of the options for the RCZ and as above I'd agree there are lots of nice looking options on RCZPerformance's site! Personally I love the look of the Ruffer system AND you get a small power increase too (I'll be going down that route once my warranty expires), but there's a fair few bits to it to do the whole system (if you want, you could just do the back box to start with and add to it later) and it ain't cheap!! BUT just listen to the video clip on RCZ Performance's site - a nice growl!
http://www.rczperformance.com/Exhaust.h ... er_Exhaust
TBH they all look pretty decent though... I have the Zunsport at the mo as I'm still in warranty, which looks great, but gives no real sound increase (perhaps a little).
Alternatively you could get a decent exhaust fabricator to build you a straight through pipe to eliminate the rear silencer as a starter for ten. That would give you some more sound, but I'm not sure how much, perhaps someone on the forum has gone down this route?!... You also need to make sure they use decent quality metal as there's exhausts and there's EXHAUSTS! Don't know anything about this company, but here's an RCZ example -
http://www.yell.com/biz/longlife-exhaus ... l-6853530/
There's also the option of eliminating the front silencer instead/as well as, of course (as per the Ruffer system). Just bear in mind that more sound is great until you're doing a long motorway journey, then it can get a little wearing! (I have removed two levels of silencing on my XKR, just trust me on this!). Another point to ponder is that a professional product like the Ruffer has been R&D'd and tested to eliminate resonance etc whereas there may be tweaking required to a bespoke/fabricated system to get it sounding right and sort any issues. An aftermarket system (like the Ruffer) should also have been balanced, to ensure correct back-pressure (Rufffer quote a pressure reduction to 85% giving them a claimed +5% performance boost) and increased performance (BUT you ain't gonna get mega horsepower from just an exhaust on this engine, no matter how good!). Some points to ponder anyway! :thumbup:
Oh and you could also take a look at the Supersprint website
http://www.supersprint.com/ I had one on my 406 V6 Coupe and it was epic and top quality, although it looks like they only do a twin exit variant... (their dyno results indicate a +8 BHP increase for the full system). Again, not a cheap option though!!
