| First off, the ECU doesn't use any detonation sensor feedback until the engine is up to operating temperature (75°C), so it will never actually pull timing on cold-starts. This hesitation is most likely due to the ECUs warm-up timing maps, which are disabled above 55°C. Check to see if the hesitation goes away as soon as the coolant temp hits 55. The alternator whine could be due to a ground-loop in your headphone circuit - you might want to try a different location for the circuit ground.
If you do want to monitor the exact amount of timing the ECU is pulling due to detected knock, check out the following software product I have been developing:
[ http://www.zromtech.com/products.aspx?productid=1 ] With this software you can monitor and log all the ECU knock control parameters in real-time over the Consult port.
Sam
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