Originally Posted by Benelli
I need advice from fellow 'Integra Type-R' owners, and I hope I've come to the right place!
I have recently bought a 'DC2' 'ITR' (UK spec,) and would like to get an Induction Kit, Manifold, Cat' back exhaust, and possibly de-cat pipe. I want best possible performance increase from these products, and a sweet sound.
Please post your opinions on the best products for the job (whatever the price, but available in the UK!) Also (to help me decide) any pics' of upgraded exhausts on 'ITR's' would be appreciated.
Thanks for helping a man new to the world of 'Type-R!' 
Mugen intake if you can afford it or comptech.
Header... do you have to worry about cops looking under the hood? if so oem jdm4-1 is a very good part (heatshields to cover) No cops- then Toda Header (best off the shelf)
testpipe- any should do, but I went with SMSP.
Catback.. I recently purchased the buddyclub III, loud loud but sounds OH So sweet.
Intake manifold... stay stock unless you have money to toss around.
If you have access to a tuner then think about getting a progamable ECU. a few HP to gain on a stock motor and a few more with bolt-ons.