Adrian@TORQEN Posted August 4, 2013 Share Posted August 4, 2013 (edited) FOR SALE - H-Dev Grounding Kit in red for 350z fitted only a 2 months ago, as new condition. This grounding kit can help smooth out engine idle and give better throttle response. To judge whether the grounding kit would make any difference we chose to measure the signal from the air flow meter at the ECU (in the passenger footwell) and also the noise present at the throttle body, with the engine idling. I've got a laptop based osciloscope that we used to record the signals. First we took some measurements of the air flow meter signal at the ECU and voltage at the throttle body without the additional grounds. Results below. We then added 4 grounding cables - 2 cables from the battery ground body connection to the inlet plenum and the front of the engine at the same point as a loom earth. And 2 cables from the left hand side of the engine to the body. Pictures below. We were really surprised to see that the additional grounds did reduce the noise at the AFM and throttle body quite a bit. Also, I've driven the car and it does seem smoother when coming on and off the throttle in the lower gears. Edited August 5, 2013 by octet Link to comment Share on other sites More sharing options...
facetoface101 Posted August 5, 2013 Share Posted August 5, 2013 PM'd! Link to comment Share on other sites More sharing options...
Adrian@TORQEN Posted August 5, 2013 Author Share Posted August 5, 2013 SOLD to facetoface101, please lock. Link to comment Share on other sites More sharing options...
M13KYF Posted August 5, 2013 Share Posted August 5, 2013 Sold - thread locked Link to comment Share on other sites More sharing options...
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