Sorry, wyn, i initially posted because proECU ommited from the price the need to purchase a burner and chips. IE uberdata and other freewares do not work without the chip that you burn with ur map inside.
I decided to post a response because my PM box got attacked by proECU and when it was done here, I felt the need to respond. My apologies to people who were watching the home install.
To fill u in barefoot, the noise u hear could be anything, from a loose bolt to yes detonation. Detonation can happen at idle not just driving around below boost. From what I understand, you have no fuel management, and depending on where your locked timing is, this may be causing you to detonate underboost.
As for getting an ecu, If your good enough to do the turbo install etc, your good enough to use a freeware like uberdata. Hit me or poid up if you want a hand with it, its not hard.