07-17-2019, 06:34 PM | #1 |
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2020 M340 tune
This is my first BMW and my first turbo, so bare with me.
It’s my understanding that the 2020 M340 has come from the factory with a more aggressive/less restricted tune AND possibly a better turbo than the 2019 model. Thoughts? Either way, I was looking at the JB4 and JB+ to spice it up even more. I connected with a guy from Burger and he explained that the JB+ wouldn’t even move the needle since the factory tune is so much better this year. He said that I’d have to use map 2 on the JB4 to see any gains. That being said, if I’d have to be at map 2 to see anything, what kind of overall gains can I expect? I have no plans for any other upgrades at this time. Thanks in advance for any help! |
07-17-2019, 07:15 PM | #2 | |
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07-17-2019, 08:12 PM | #4 |
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Haha that's different my friend, There is a limited edition BMW 340i M Performance Edition, that was for the last year and it was pretty much just a 340i loaded with M Performance parts and the power and exhaust kit.. but this is the first time BMW actually made a "M340i" it's there new line of products l, almost like Baby M's
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07-17-2019, 08:22 PM | #6 |
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Again, my apologies, I’m new to this.
Ok so back to my most important questions; with the B58 coming from the factory with an already fair amount of power, what kind of numbers should be realistic with a JB4 map 2? Are high 11s realistic? |
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07-17-2019, 08:50 PM | #8 | |
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07-17-2019, 09:56 PM | #9 | ||
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07-17-2019, 10:24 PM | #10 |
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Just install the JB4 on the m340, and went for a ride and collect some logs.
Running map2, and the car is a beast... I will run a dyno in next days to see the formal gain, but to explain you, map2 increase of 4 psi the turbo values. I got spikes to 21 psi. Normally is around 50hp increase at the wheel. |
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07-18-2019, 05:00 AM | #11 | |
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07-18-2019, 01:20 PM | #12 | |
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07-19-2019, 07:04 PM | #15 | |
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07-19-2019, 10:26 PM | #16 | |
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There is no access to the map settings through dash yet. Terry gave me an update firmware that works on previous digital dash but not on the current one installed on m340. Hence I decided to order the Bluetooth module so I can change maps and also log without the need to connect my laptop Next week I will be traveling so I won’t be able to try it out but when I’m back I will report on the Bluetooth kit |
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07-20-2019, 12:22 AM | #17 | |
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07-20-2019, 11:43 AM | #19 | |
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07-27-2019, 08:51 AM | #20 |
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Heard back from Dinan this morning, just that the car is still being evaluated. I'll check back in a month or so.
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07-28-2019, 11:14 PM | #21 |
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Did we get a dyno number?
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07-29-2019, 10:13 PM | #22 |
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Well, what we do know is the Z4 Dyno'd in the 370's and is also rated at 382hp. I'd imagine the M340 will be similar. I'm hope mine gets delivered either Wednesday or Thursday at the latest. I'm down to Dyno.
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