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Piggyback Vs Remap
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<blockquote data-quote="absidian" data-source="post: 233005" data-attributes="member: 4356"><p>Depends on your E36 production year.</p><p></p><p>To remap, OBD1 requires a chip replacement in the ECU.</p><p>Later OBD2 models will be a straightforward re-program.</p><p></p><p>Piggyback has its limitations, remap is best. ECU's re-learning is limited within pre-defined boundaries in the ECU parameters. Those parameters are changed during a remap, along with other parameters that aren't learnable.</p><p></p><p>These are only general rules - how much of the ECU that is actually remapped will depend on your chipper's experience.</p><p></p><p>Hope this was useful.</p></blockquote><p></p>
[QUOTE="absidian, post: 233005, member: 4356"] Depends on your E36 production year. To remap, OBD1 requires a chip replacement in the ECU. Later OBD2 models will be a straightforward re-program. Piggyback has its limitations, remap is best. ECU's re-learning is limited within pre-defined boundaries in the ECU parameters. Those parameters are changed during a remap, along with other parameters that aren't learnable. These are only general rules - how much of the ECU that is actually remapped will depend on your chipper's experience. Hope this was useful. [/QUOTE]
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