I have a probe installed on each header, or actually as close to the header as I could get it which is say 100mm downstream of the 'factory' header, where it joins the exhaust pipe. Any closer and it would have been a nightmare to get in. I use SAAS gauges and had the thermocouples tested by an instrument tech in his 'hot box' and confirmed the readings are correct for what is displayed. There are two probes and 2 gauges for total clarity. Response is very quick and more than adequate for what I wanted, which was actively managing the EGT's via driving style.






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