So I finally picked up my car from Borla Performance Industries. Let me just say they did a fantastic job, unfortunately due to cost and warranty issues associated with removing those 'Quad Exahuast Tips' they were unable to do anything cosmetic to the car.
That being said the sound is AWESOME!!!!!! I was worried that it might sound 'ricey', however they really captured the essence of a large 5litre V8. I had a 450mile drive back to Arizona today, so I really got a chance to put the car through it's paces. What you really notice is the sound at the lower rpms. Before the car was really quite until it hit that magic 4000rpm mark, now you have a deep sounding exhaust just when it's idling. What's great to is it's not obnoxious like you hear on some cars, it's enough to get noticed, however it's not over the top.
When I got back to Scottsdale first thing I did was take it to the carwash. I'm not kidding there must have been about 7 different guys come up to me to ask me about my car, and without even saying anything they all commented on how badass it sounds.
Dave and the guys did a great job. I wasn't able to speak with them on friday, so I havn't gotten any dyno reports yet. As soon as I get them, I'll post them. In terms of performance I can't say I can really feel it, however when you increase the HP by 20 on a 420HP car, I don't think it's that easy to tell.
So, if you really want to add a little touch to your IS-F, and give it even more of a muscle car type feel I would definitely recommend getting this exhaust. Don't know pricing or time line for when it will be available, I will also post that info when I get it.