OK, lets do it. Supercharged Prados seem to generate a lot of traffic in the various threads. Here's a place to discuss them exclusively. Please keep it about supercharger or directly related issues. I'll kick it off.
From Glen's build up thread here; http://www.pradopoint.com/showthread...539#post478539
Glen wrote;
I think that is a great idea. However, the knock sensors are an input to the ECU, therefore could be many different types of signal. Better to use the output which would be spark retardation ? Theorizing here.
Come to think of it, why doesn't the 5VZFE knock sensor system retard spark enough to eliminate detonation ? Perhaps it is out of the operating range of the devices used as standard ?
From Glen's build up thread here; http://www.pradopoint.com/showthread...539#post478539
Glen wrote;
Detonation is always a risk and there are some options for reducing them, cooler spark plugs, high octane fuel, lower engine compression via thicker head gasket, meth injection, (de)tuning, probably much more. What I'd love to do if I could find the time, is hack into the vehicles wires to access the knock sensor output and see if I can make it trigger a circuit to illuminate a light up front. That way we could see every time a ping is suspected. Then purchase an exhaust air/fuel monitor and have it's display up front as well. Plus connect the laptop to the xede semi-permanently. As we drive we'll be able to monitor whats happening in real time, and can make changes slowly over time. This couldn't replace a full dyno tune, but by using real world scenarios we can improve the tune.
Come to think of it, why doesn't the 5VZFE knock sensor system retard spark enough to eliminate detonation ? Perhaps it is out of the operating range of the devices used as standard ?
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