Reply to thread

Message: <blockquote data-quote="ALBundy" data-source="post: 199474" data-attributes="member: 15">What fabian said is only 50% correct. He is talking about a closed loop situation.  When your engine is above 3000rpm (generally) and your throttle is at WOT position, the ECU will ignore the readings from the O2 sensor, and hence the open loop situation where the piggyback will be effective.  The holy grail is here in Singapore I was told. BVO apparently can dyno tune your engine and flash the memory into the ECU (for OBD2 cars), or for your old jalopy, can burn the new mapping into a chip and replace the existing one.  Hope this helps.</blockquote>