Can anyone please point me to a set of detailed instructions on how to time my 93 tt? I replaced my CAS and got the car to run finally! So i went out and got myself a timing light but when I look at the timing marks and rotate the CAS I can see the mark adjust to the 15 degree point but the car will not idle well and the ECU keeps adjusting the RPM's all over the place which moves the timing mark...!!! What I am trying to do here is set the base timing right? How do I adjust the idle to set my base timing??