What is the 'cell' rating of the standard CAT? Is this something that needs to be changed, or something that you specify as part of the exhaust?Randell Floyd said:On the vRS the CAT isn't just a couple of bolts too remove like on most cars I've had but more part of the actual system, so that's why most owners choose the middle ground 100cell as it doesn't seem to hinder performance.
Is the extra noise something that only kicks in under hard acceleration? Or is it always like it? I like the idea of something mild-mannered when driving around town, but comes alive when driving hard.The CAI do cost a fair bit more than the normal filters, but it was only around 10% of my overall budget for mods so I preferred having the colder air and the extra noise, as I was used to driving a modded ITR before the vRS. And it's carbon fibre for bling!
Fuel ecomony does actually get better if you use the car in the same manner, but of course with the boost at full I do tend to drive the car harder and of course that will see diminished result, but it would get the same MPG driving hard at low boost.
Currently 95mph on gps is about 4000rpm. Does the extra power mean that the engine doesn't need to rev as high to produce the same speeds? If so, is this ow the fuel ecomony is increased?
A lot of people have smoother maps than mine at about 220/220, and take the CAI away the car is fairly quite, and as said before the car have recirc dump valves so they are very quite, the atmospheric ones aren't ment for the 1.8t engine by default and they cause all kind of havoc when fitted.

Drivibilty on mine at full boost is a little aggressive, but that more to do with the roads getting wet now, and a good set of tyres make a world of a difference. A fair few tuners will be more than happy to map for your style of driving so thats a great bonus.
How do you mean aggressive? How is the stock engine different from the LCR/S3? What is a TIP?