09-15-2020, 10:30 PM | #23 | |
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So you're saying stock was better with the ECU flash? Or that was the case for stage 1 ECU tune only? Sorry I'm a noob, especially when it comes to TCU tuning.
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09-15-2020, 11:52 PM | #24 | |
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I was also referring to the issues with ecu flashing that some of the newer G20s had restrictive dealer software bricking their cars when ECU flashing. |
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09-16-2020, 12:32 AM | #25 | |
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And yes. My car was bricked when I tried flashing it with BM3 back in December. My car had the updated DME software but no one knew for sure back then if BMW was doing updates. Also, there was no one unlocking these DMEs then. I had no other option but to return it and get a JB+ instead. I wonder what times BM3 tunes G20s are getting.
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09-16-2020, 03:14 PM | #26 |
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Today's run. Used launch control. Same mods as before (JB4 map 2, ~E25-30)
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09-17-2020, 05:49 PM | #28 |
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Did a run today on an uneven road. Car was in comfort mode, shifter in D. All electrical nannies on. No brake boosting. Just WOT from a standstill.
Looking at the speed/acceleration graph, you can see the change when the extra boost comes into play.
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09-18-2020, 08:25 AM | #30 |
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5.7 seems slow for a tuned 330, even in comfort mode. Stock is supposed to be 5.2 with xDrive. Your 4.7 run seems more in line with what I would expect
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09-18-2020, 11:47 AM | #32 | |
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And I'm not sure how people get 5.2s 0-60 with xdrive. My car stock was definitely slower. I did some runs stock without a dragy and it was always in the 5.5-5.7s range with LC.
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09-18-2020, 11:50 AM | #33 |
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If you can get a tune and don't mind losing warranty at all, do it. A tune is better than a JB+ when it comes to power delivery While I love my JB4, I sometimes wish the power delivery was linear.
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09-18-2020, 12:01 PM | #34 | ||
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I'm very impressed with the 4.7 and 13.1 quarter mile time you posted. That's prior gen 340i like numbers. Maybe even slightly faster in the quarter mile. |
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09-18-2020, 01:27 PM | #35 | |
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And yes. The 4.7s 0-60 isnt too shabby but I like how it pulls from 60 to say 100mph. Useful when overtaking here. And the quarter mile surprised me too. I thought it was around 13.6s with the JB4. Did not expect 13.2!
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09-29-2020, 10:28 AM | #36 | |
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I just get a jb4 too. Just scared lol |
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09-29-2020, 11:22 AM | #37 |
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Scared about what? Which map are you running it on? Any other mods?
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09-29-2020, 02:52 PM | #38 |
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10-20-2020, 03:50 PM | #40 |
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The 5.7s run was WITHOUT launch control and with DSC on. My stock car does 5.7s and sometimes more WITH LC. The difference is apparent in day to day driving as well as doing LC runs I've got a better custom map 6 now and I'm waiting on my EWG cable to extract more power. But no dragy runs since I had to return the box I got (battery of the first one died after a few weeks; second one was DOA; thought I'd wait for a bit to try out a third one).
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10-21-2020, 01:05 PM | #41 | |
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10-21-2020, 04:04 PM | #42 |
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Hehe let's see. All my runs so far have been in the 13.2s range. The slowest I've got was with map 2. 13.4s quarter mile. Slowest map 3 run was 13.28s. Not bad for just a piggy back.
I might buy another dragy and see. Who knows. Third time lucky?
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