Hi,
Just thought I'd mention the excellent service and price that I got from Powertek via ebay.
I got a manual boost controller and smoked boost gauge for about £40 inc delivery which came next day.

Added to that the top marks service from a chap called Ian Burns.

His email address is powertek@btinternet.com if any one is interested.

As an indication to the service I fitted mine about 2 months ago then yesterday I went and lost the spring out of the boost valve. I found Ians address emailed him asking if he sold spares (not expecting one but thought it was worth a go), he emailed me back within 3 minutes asking for my address and said he'd pop a new spring in the post and not asked for a penny.