aem ems 02 reading
Hi can anybody tell me which 02 I need to use for tuning I have a custumer with a gen 2 viper srt10 with aem ems uego o1 + o2 are internal .
each 02 are each side in header reading 1 cylinder only , I add and external AEM wideband gauge I install the sensor after the header at the end of the collector so reading the total 5 cylinder
My problem is with the aem pro I am having internal wideband reading 14,5 and the gauge reading 13,5.
Si witch one is the correct reading?