01-14-2020, 08:40 PM | #23 |
2018 M240i / BMS CAI / JB4 / Catless VRSF
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Food for thought, I live in Buffalo, NY and my dealer doesn't allow any mods. I'm still under warranty on my 18' m240i and I'm running BMS CAI, VRSF cat less DP with JB4 tune. Bought tune combo with DP through Mike-XPH for a total around $1000. Added spacer and no CEL so far. One thing I do before inspection is swap Cat (takes less than an hour) and pull out the tune and hide wires. No issues so far, car sounds good WOT, more burbles and sometime backfires (Loud). Well worth the once a year I need to pull take it apart while I'm under warranty IMO.
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Can't stop the //Addiction...2020 Misano M2CS 6MT - New Toy
2018 m240i b58 - Formerly owned / BMS CAI / VRSF DP / JB4 map 2 - 340WHP; 363TQ 2016 328i xdrive n26 - daily 2015 GMC Sierra 1500 - daily driver HEUSING240i |
01-14-2020, 10:43 PM | #24 | |
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01-15-2020, 06:58 PM | #25 |
2018 M240i / BMS CAI / JB4 / Catless VRSF
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The JB4 is plug and play, all I do is disconnect the battery, unplug the harness and disconnect the OBD cabling to the controller tuck it away. I have only needed to take it in for normal maintenance (ie. oil change, inspection..)
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Can't stop the //Addiction...2020 Misano M2CS 6MT - New Toy
2018 m240i b58 - Formerly owned / BMS CAI / VRSF DP / JB4 map 2 - 340WHP; 363TQ 2016 328i xdrive n26 - daily 2015 GMC Sierra 1500 - daily driver HEUSING240i |
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01-16-2020, 01:22 AM | #26 |
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Correct, but ecu stores data like max boost correct? I have heard that even piggybacks show obvious signs when uninstalled. At that point why wouldn't you go with a flash tune if they're both voiding warranties?
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03-22-2020, 11:18 PM | #27 | ||||
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No warranty issues |
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03-22-2020, 11:19 PM | #28 | |
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03-23-2020, 07:13 AM | #29 |
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03-23-2020, 05:57 PM | #30 | |
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03-27-2020, 10:28 AM | #31 |
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All piggyback work but tricking the ECU to think its making stock boost. If the ECU knows how much boost the car is actually making, the tune would not work.
A simple boost check will not show any values above stock Some say BMW has the ability to dig deeper and check other parameter histories. Conducting such tests might show the car was tuned even if boost shows stock value. That being said, after 13 years of tuned Turbo BMWs, and hundred of thousands of tuned cars, I cannot remember this incident happening even once. This leads me to conclude, these rumors are either false and BMW cannot check 6 months history of a car, or they just dont care to check it. Either way, it's safe to safe that if the car is tuned and users remove the tune before their dealership visit, they will be fine.
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03-31-2020, 08:23 PM | #32 | ||
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Can't stop the //Addiction...2020 Misano M2CS 6MT - New Toy
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