02-04-2018, 01:16 PM | #2 |
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I think it's better to look at them as piggyback (chips) or flashing (ECU tune)
In an ECU tune, you are overwriting the factory software, or at least modifying said software, to obtain increased engine performance. BMW has encrypted the ECU for a while now, and until recently (only on the F3x), it could not be cracked. Our only option is to modify the signals the car gets. This is accomplished with a piggyback tune. In a piggyback, we sit between the sensor and the car's ECU, kind of like a middle man. To get more performance we tell the car it's not generating enough boost or fuel etc. So one overwrites the factory coding, while another intercepts sensor signals and modifies them. Different vendors will accomplish this in different ways. Example, the Dinan Sport tune interacts with two sensors, whereas their Stage 1 tune interacts with four sensors. BMS makes one that only modifies one signal. I went with the Dinan Stage 1 and love it.
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02-06-2018, 05:24 PM | #4 | |
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Flash Tune changes ECU values Each option has its own pros and cons
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02-06-2018, 10:40 PM | #5 |
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02-06-2018, 11:02 PM | #6 | |
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02-07-2018, 12:10 AM | #7 | |
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This is also the negative of piggyback. If you modify a signal then you can't do all the trimming for all conditions. Some ECUs can do boost by gear Interesting, never thought about gauge hijacking What Bluetooth capabilities? |
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02-07-2018, 11:58 AM | #8 | |
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Even datalog and firmware update Boost by gear is far superior on a piggy. As you know boost by gear needs to be changed based on conditions and tires. With a piggy anyone can do it and it takes seconds. With an ECU flash, you will need a tuner to do it.
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02-07-2018, 12:16 PM | #9 | |
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02-07-2018, 12:19 PM | #10 |
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I have always stacked both together on my tuned BMWs.
You get the best of both worlds
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02-07-2018, 01:54 PM | #11 |
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02-09-2018, 08:52 AM | #12 | |
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02-09-2018, 04:00 PM | #13 |
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