Do you mind if I resize it for you? theris no problem.

The plot is interesting. Do you have the tool to re-program the ECU at will?

It will be an intersting plot at 5-10% load, although the noise will be smaller then full load, with or without knock.

Richard

OK, done more test.
Graph is 4 test. Two are ?idle? done spinning the motor thru rev range without any load at all. Other two ?low load? are second gear very gentle pull thru the rev range.

http://img129.imageshack.us/img129/6...ltytestmp0.jpg

Richard please resize any of my posts is necessary.
According to the data collected ?V? which is knock sensor voltage rises predictable. Rise factor can be calculated and depends on load (0-100% load). As the load increased, voltage output decreased proportionally. For the actual knock we need to look for ?spikes? in voltage output rather than voltage itself.
BTDC is ignition readout.
Test 1 ? low load
Test 2 ? idle
Test 3 ? low load
Test 4 ? idle
All test done 5-10 minutes apart.
Richard I have fully stock ECU and have no means to program it, only read.
If I will upgrade ECU software to say REVO (Europe tuner of AUDI) software I will have limited programming access, such as timing, boost, fuel. At this stage no tuner is interested in what I do therefore I cannot get program uploaded to play with. What make it worse is there are no local tuners in Australia.

Done few more tests.
Here is the picture of HSV running 9Hz. He is one happy valve clicking his way thru?

http://img111.imageshack.us/img111/3711/img2560hp3.jpg

This picture is a PWM pump controller test. To run WI continuously (over 3 minutes) you need a fair size heat sink. There is a lot of heat generating by Mosfet trying to handle 12VDC @ 10 Amp. We are looking how to unload Mosfet to run it cooler now.

http://img76.imageshack.us/img76/4331/img2559dh3.jpg

Next step is in car text of knock sensor to see if we can pinpoint knocking?.