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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Tunes 101
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<blockquote data-quote="nikhsub1" data-source="post: 1449774" data-attributes="member: 22952"><p>Tunes are flashed to the ECU - they rewrite the programming and you flash and can remove the device that flashes the ECU if you like. People also will mount their flashing device (Cobb, nGauge, etc) for other functionality such as logging or additional gauges. Not necessary. Then there are what are known as 'piggy back' devices that are physical boxes that plug in and piggyback off the ECU - these don't flash the ECU or rewrite the code, they essentially trick the OEM programming into running outside it's normal parameters. Since you aren't flashing the ECU, it is safer in terms of your warranty being compromised with a true tune. </p><p></p><p>You don't get any sort of transmission tuning/benefit from the piggy back devices and they generally don't boost the power as much as a traditional tune. Once such device that always seems to get good feedback is the JB4. </p><p></p><p>Hope this helps.</p></blockquote><p></p>
[QUOTE="nikhsub1, post: 1449774, member: 22952"] Tunes are flashed to the ECU - they rewrite the programming and you flash and can remove the device that flashes the ECU if you like. People also will mount their flashing device (Cobb, nGauge, etc) for other functionality such as logging or additional gauges. Not necessary. Then there are what are known as 'piggy back' devices that are physical boxes that plug in and piggyback off the ECU - these don't flash the ECU or rewrite the code, they essentially trick the OEM programming into running outside it's normal parameters. Since you aren't flashing the ECU, it is safer in terms of your warranty being compromised with a true tune. You don't get any sort of transmission tuning/benefit from the piggy back devices and they generally don't boost the power as much as a traditional tune. Once such device that always seems to get good feedback is the JB4. Hope this helps. [/QUOTE]
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Tunes 101
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