I have searched and I am aware of the difference between the newage and the classic ECU.

But, I would still like to ask if I can put the following onto my 05 WRX 8 and drive without a remap?

Divorce decat Downpipe
Jap Sti catless Centre Section
Sti Back box
K&N Panel filter

Will I get any CEL warning lights or risk the Up pipe cat giving up thus damage my turbo with only a turbo back exhaust?

There is only one registered Ecutek mapper here and the cost is around 700 quid. Should I go ahead with their remap (only road tune, no dyno)?

 

Might be an idea to try a search, but have a look here (this has been running for the last few days so surprised you haven't seem it..!

http://bbs.scoobynet.co.uk/showthread.php?t=526317