well after much deliberation on which box to go for i chose the caterman special, i was a little hesitant as the car is still under warranty.
got the box on wednesday and fitted it. i had a couple of problems, being plugs did not quite fit straight away (the lugs were a little out) but got prompt support from the trader in what to do(emailed back within 1 hour) where i had to remove a yellow clip on one end the other end the lugs were the same. i did not want to alter them in case the box had to go back so tried to fit the best i could, this caused limp mode. i then tried to push it further in and it worked the EM light was still on but went off after the car started. i tried the car and well it is gaging for you to open the throttle no flat spots at all and when you let rip you think it is a totally different car it flies. anyway i still had the plug that was not quite fitting right, i mailed caterman to check if he altered his in any way, (thanks for support caterman) i thought filling the lugs down a bit would do the trick which it did. it fits like a glove now. while i was on i decided to do the airbox mod which was easy following the guide to on here
i left the original air filter in but will be changing it soon as it was at the stealers for a full service six weeks ago where they were supposed to change it but by the looks of it, it is the original one.
i now have to do the ecu trick (battery off for half an hour) to reset it.
altogether i am so impressed and pleased i bought it