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Message: <blockquote data-quote="fabianyee" data-source="post: 199426" data-attributes="member: 6">If you have a properly done chip remap, it'll be better compared to piggyback. Chip remap stores the 'upgrade'. In a piggyback ECU set up, the Piggyback is tricking the actual ECU with the piggyback map values. And when the ECU begins to 'learn' the engine with the piggyback maps, it would slowly go back to its default map as 'burned' in the ECU chip. Calvin Tan has a chip with increased rev cut as the piggyback ECU can't raise the revcut pre-programed on the ECU chip.Wat's good about piggyback ecu is that you can dyno tune the engine or tune as u drive on the road. U have to pay more to dyno tune a chip / remap.</blockquote>