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Message: <blockquote data-quote="drexchan" data-source="post: 1848625" data-attributes="member: 6936">You guys know this device called http://www.gtechpro.com/rr.html right? If not, read it http://www.gtechprosupport.com/support/manuals/RR4.0.pdfThis is a device to detect the G-force during acceleration and is very useful in measuring 0-100km/h, 0-400m time, etc etc.This device senses the noise in the electrical system (cigarette lighter) to read the engine RPM.I have one and I used it in developing the C-VOLTZ v2.0 voltage stabilizer.What we did was to test all the prototypes with the GTECH Pro RR. When the GTECH is able to detech the RPM, the prototype that is being installed on the battery will be rejected. That left us only 1 prototype that failed the GTECH - no noise detected, or noise level too low.With this proto, we went dyno the car. As you know, the dyno machine also detects the RPM with a clamp on one of the ignition cables to detect the flux. Nope, it failed too. That's the reason why we can't produce a proper dyno chart with the VS.. haha!During a GTECH test run, we need to induce the noise by switching on the aircon compressor, so basically our test runs with GTECH are with the a/c on.Well, not cheap though, USD299 excluding freight.</blockquote>

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cheap way to read ecu

Hello experts,

am i right to say the ecu can be accessed via a harness ?
if so, is there a computer program cheap/free and simple enough to use to access the ecu realtime info? can DIY?

regards
Richard

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