03-19-2022, 01:13 AM | #1 |
New Member
14
Rep 16
Posts |
Frustrated, G20 M340 - 0 to 60mph in 4.9s - what did i do wrong?
Hi guys,
I own a BMW M340 G20 2021, couple of days ago I tried my firsts launch control and I did 0 to 60mph: 5.4s, 4.98 and 4.91s... I'm really sad because I got those numbers, maybe I did something wrong and that's the reason why I'm posting here, I will test all the advices in order to see if I really improve the times. I will put the next info that could help to identify what is the problem (80% I'm the problem but well ) also, i'll attach my launch control. 1. I did launch control holding the car for 2 seconds then I launched the car 2. I have runflat tires 3. I'm in Bogota altitude 2640msnm, temperature 19°C 4. I have K&N filter 5. I have downpipe VRSF 6. No stage, any repro because of warranty 7. floor was dry, no dust, no sand 8. I tried gas with 98 octanes (that's called Primax G-Prix here in Colombia) Launch control: https://www.youtube.com/watch?v=lFB2NLEVx0k as I already said, any advice will be welcomed, thanks |
03-19-2022, 07:31 AM | #2 |
Lieutenant
506
Rep 485
Posts |
check the incline of the road, if you were on a slight uphill it will kill the times like that, and the high altitude will definitely drop the power output so that may be what's going on too
|
Appreciate
0
|
03-19-2022, 08:03 AM | #3 |
Lieutenant
286
Rep 552
Posts |
Surely the run-flats are not helping either!
|
Appreciate
1
Benjamin_Nicholas436.00 |
03-19-2022, 04:23 PM | #5 |
Brigadier General
3577
Rep 3,977
Posts |
internet says lose 3% of hp for every 1000ft
2.6km is over 8000 ft which means you have lost a lot of horses with the low oxygen in the air (same concentration but lower partial pressure) |
Appreciate
0
|
03-19-2022, 04:46 PM | #6 |
Brigadier General
1431
Rep 4,722
Posts |
Don't turbos boost more in higher elevations?
__________________
Current: 2021 M340i xDrive
Previous: '18 340i xDrive; '15 335 xDrive; '14 435i xDrive; '09 335 E92 xDrive |
03-20-2022, 12:10 PM | #8 |
Major
1712
Rep 1,331
Posts |
xdrive or rwd? (video looks like xDrive)
I have the "worst" M340i setup for 0-60 (RWD, 225 rear, All-Season Pirelli), and I can still knock out a 4.5 0-60 in Sport+, Sport Shifting, and DSC on. Bear in mind, I'm at sea level, so air pressure is perfect here. More than likely, it's your elevation that's the issue. Based on that video, your car seems to be running absolutely fine. The engine/turbos are probably air starved, though. |
Appreciate
0
|
03-20-2022, 12:46 PM | #9 |
Private
240
Rep 62
Posts |
It’s the altitude. At, 2438m, (8000ft) Bogota is at an extremely high altitude. That’s the actual height of a city of 7.2 million. The highest, drivable road in Europe 2522 meters. The actual peak is 3380m but the road is 2522m. Turbos and superchargers help to a certain point. To maintain the factory given hp/tq at that altitude, you’ll need bigger turbo(s) AND a tune! And that’s just to match the factory specs.
|
Appreciate
0
|
03-20-2022, 12:49 PM | #10 | |
Lieutenant
506
Rep 485
Posts |
Quote:
|
|
Appreciate
0
|
03-20-2022, 02:03 PM | #11 |
Private First Class
249
Rep 179
Posts |
Based on this exactly he's ferritin about 304 hp if we say stock the car is 400. So seems like elevation is the culprit even if the ecu is adapting it's still just less combustion possible.
|
Appreciate
0
|
03-21-2022, 12:31 PM | #12 | |
Major General
17864
Rep 5,462
Posts
Drives: 23 X7 40i; 23 M3; 24 cooper s
Join Date: Aug 2019
Location: IL
|
Quote:
Something else is going on. I'd visit the dealer to see if there's some issues with drivetrain.
__________________
2023 BMW X7 xDrive40i
2023 BMW M3 6MT 2024 Mini Cooper S Convertible '20 BMW m340i... '20 BMW X5 40i... '16 Infiniti Q50 RS 400... '10 Lexus RX 350... '08 Lexus IS 350... '00 Nissan Maxima... '93 Nissan Maxima |
|
Appreciate
0
|
03-21-2022, 12:32 PM | #13 |
Major General
17864
Rep 5,462
Posts
Drives: 23 X7 40i; 23 M3; 24 cooper s
Join Date: Aug 2019
Location: IL
|
Yup. I suspect there's some other issue going on. Generally speaking turbos work more efficiently at higher altitudes and you may even see small increases in power output.
__________________
2023 BMW X7 xDrive40i
2023 BMW M3 6MT 2024 Mini Cooper S Convertible '20 BMW m340i... '20 BMW X5 40i... '16 Infiniti Q50 RS 400... '10 Lexus RX 350... '08 Lexus IS 350... '00 Nissan Maxima... '93 Nissan Maxima |
Appreciate
0
|
03-21-2022, 02:01 PM | #14 |
Major
1081
Rep 1,086
Posts |
That's interesting I didn't know that I'd think less air to suck in would cause slower cars? Also I remember some guys in Denver testing the Redsport Q50 and said because of the altitude they are going to have worse track times . The RS is a twin turbo.
|
Appreciate
0
|
03-21-2022, 02:55 PM | #15 | |
Major General
17864
Rep 5,462
Posts
Drives: 23 X7 40i; 23 M3; 24 cooper s
Join Date: Aug 2019
Location: IL
|
Quote:
I'm totally willing to admit if I'm wrong but that's what I've always read and heard when it comes to turbocharged motors.
__________________
2023 BMW X7 xDrive40i
2023 BMW M3 6MT 2024 Mini Cooper S Convertible '20 BMW m340i... '20 BMW X5 40i... '16 Infiniti Q50 RS 400... '10 Lexus RX 350... '08 Lexus IS 350... '00 Nissan Maxima... '93 Nissan Maxima |
|
Appreciate
0
|
03-21-2022, 05:49 PM | #16 |
Captain
241
Rep 701
Posts |
Turbo cars are more efficent than NA cars at higher altitude. That is true.
But less air is less air, Turbo cars can compensate to certain point. At the end of the day, Turbos are not trees, they do not produce Oxgen... But it is MUCH MUCH better than NA cars. Everything that requires oxgen loses its performance at higher attitude, it is just a difference of how much you lose and how high you go. OP should just take a trip to sea level and test again. 8000 feet is pretty damn high already. Denver is only about 5000 above sea level... another 3k.... i can only imagine. I would consider any car that can do 0-60 in 4.9 secs in 8k+ altitude pretty damn fast. Last edited by oonowindoo; 03-21-2022 at 05:57 PM.. |
Appreciate
1
madpistol1712.00 |
03-21-2022, 06:39 PM | #17 | |
Brigadier General
3577
Rep 3,977
Posts |
Quote:
i think there is nothing wrong with his car |
|
Appreciate
1
oonowindoo241.00 |
03-21-2022, 06:42 PM | #18 |
Captain
241
Rep 701
Posts |
I dont know how less air can produce MORE power than at sea level... If that is the case, we got how Force Induction works all wrong.
That is like saying i can run faster and longer at 8K+ altitude than at sea level.... |
Appreciate
0
|
03-21-2022, 07:51 PM | #19 | |||
Major General
17864
Rep 5,462
Posts
Drives: 23 X7 40i; 23 M3; 24 cooper s
Join Date: Aug 2019
Location: IL
|
Quote:
Quote:
https://www.google.com/amp/s/www.mot...ormance/%3famp Quote:
__________________
2023 BMW X7 xDrive40i
2023 BMW M3 6MT 2024 Mini Cooper S Convertible '20 BMW m340i... '20 BMW X5 40i... '16 Infiniti Q50 RS 400... '10 Lexus RX 350... '08 Lexus IS 350... '00 Nissan Maxima... '93 Nissan Maxima |
|||
Appreciate
0
|
03-21-2022, 07:52 PM | #20 |
Major General
17864
Rep 5,462
Posts
Drives: 23 X7 40i; 23 M3; 24 cooper s
Join Date: Aug 2019
Location: IL
|
See above ^
__________________
2023 BMW X7 xDrive40i
2023 BMW M3 6MT 2024 Mini Cooper S Convertible '20 BMW m340i... '20 BMW X5 40i... '16 Infiniti Q50 RS 400... '10 Lexus RX 350... '08 Lexus IS 350... '00 Nissan Maxima... '93 Nissan Maxima |
Appreciate
0
|
03-21-2022, 07:58 PM | #21 |
Captain
341
Rep 751
Posts |
|
Appreciate
0
|
03-21-2022, 08:09 PM | #22 |
Major General
17864
Rep 5,462
Posts
Drives: 23 X7 40i; 23 M3; 24 cooper s
Join Date: Aug 2019
Location: IL
|
What does it say? The last paragraph says they didn't experience any power loss driving a civic type r up pikes peak. Why not?
__________________
2023 BMW X7 xDrive40i
2023 BMW M3 6MT 2024 Mini Cooper S Convertible '20 BMW m340i... '20 BMW X5 40i... '16 Infiniti Q50 RS 400... '10 Lexus RX 350... '08 Lexus IS 350... '00 Nissan Maxima... '93 Nissan Maxima |
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|