That is all i would want to do, which exhaust and map is the best to go for, there seem to be a few out there the k-tecnic seems to be the maop and the jozzasport seems to be the exhaust with maxogen as well.
What are your thoughts with the brakes?
The quality of the components and engineering are there where it matters most, the seats, the suspension, the brakes, the engine. IMO, unless you're a track day junkie I think the standard brake setup is more than adequate, I've experienced no fade or any braking issues on my back road jaunts. In fact my pads will need replacing soon and plan to replace them with the standard Renault items. Besides I hear quite a few stories with people experiencing brake squeal when using other pads which I'm not too keen on.
The standard exhaust does the job and is a 2.25" bore exhaust and rather heavy. IMO gains from the exhaust are very marginal and should base your criteria more on sound rather than power as that is what you'll notice most. I went for a Scorpion RS192 as I wanted something subtle and not too in your face plus its 6KG lighter than standard. Yozzasport, BTB, Milltek, etc offer a louder systems if thats your thing.
The same will apply for induction systems. I decided to modify the standard airbox since it's virtually free. I removed the acoustic valve and since I already had some spare flexible alloy induction hoses, used them to replace the squashed fluffy fabric hoses that come standard. When I had it remapped on a RR recently the guy removed the airbox to see how restrictive this setup would be. With no airbox, it gained 1bhp! so I'm happy with the modded airbox, plus prefer it to look standard.
My car already came with a Unichip piggyback device. So I decided to have it setup with my exhaust and airbox. The original map was poorly setup and was overfuelling especially at full throttle. With the correct fueling sorted it gained a further 8bhp to put out 183bhp and 149lb/ft. I have no idea what it made prior to the Unichip.
There are plenty of people that do remaps and all claim to give around similar sort power, but charge different prices. If it were not for the Unichip I would have gone for a RSTuner as that allows you to have the car mapped specifically to car and, I think, to your driving style to a degree through a device you plug into your car via a laptop. I like versitility and to tinker and this device will allow you to create power graphs and analyse data from the car's ECU.
Heres a short vid of my car with its current mods:
http://www.youtube.com/watch?v=gUkaig4E9i4