11-21-2023, 12:23 PM | #1 |
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21 M50i Before and After JB4 results
Wassup guys picked up my '21 M50i in September and I'm loving every second of it. Wanted to share my stock 1/4 mile times as well as my times after installing a JB4 this weekend. My best stock time was a 12.175@112 at the track. My best on the street with my draggy was 12.39@112. After installing the JB4 I was able to get a best of 11.84@116 on map 2 using the draggy(with a passenger). I did a run on map 1 and went 11.9@114. I'll be hitting the track as soon as possible to get new times. So far this is the fastest car I've owned. My nitrous 350z went 12.0@114 and my N/A 370z went 12.33@114.
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11-21-2023, 03:45 PM | #2 |
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Outstanding.
11.8 is killer especially at 5300 lbs. There are many guys not getting 11.8 with the X5M Looks like you picked up nealry half a second which is huge when you are already low 12s along with a 4 mile per hour gain @116.5 Your stock metrics are in line if not slightly better than the auto press testing results and it is nice to see this reproducable validation which should be noted by a couple posters here who claim that these professional evaluations reported in C&D, R&T, etc. are fake and made up BS. Obviously not. Great job and Thanks for sharing. You rock! Last edited by cobramite; 11-22-2023 at 09:16 AM.. |
11-25-2023, 05:18 PM | #5 | |
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'21 X5 M50i Tanzanite Blue II/Coffee (RIP) '21 M240ix Long Beach Blue Metallic/Red '14 X5 s35i Lux Line Mineral White/Mocha (re-homed) |
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12-01-2023, 11:56 AM | #6 |
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thanks for sharing! I love my M50i and am running carbahn tune (piggy back), Dinan CAI, X5M intake ducts (removes silencers) and will likely thrown on the Dinan axleback as my xmas gift.
Perhaps I should also invest in a Draggy to see what she can do unofficially. Doubt it will be faster than your #s but this vid looks fun! The greatest part of the V8 is listening to how it roars under throttle. Its truly one of the few cars I've owned where I occasionally prefer listening to the motor while I drive over music. |
12-01-2023, 01:54 PM | #7 | |
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12-01-2023, 02:39 PM | #8 |
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I had the racehip but found the shifts aggressive/harsh (don't want to say rough but it wasn't smooth) when in sport + mode from 0-60 when WOT. I am happy with the throttle response from Carbahn and more happy with the smoothness/crisp shifts when WOT.
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cobramite1227.50 CurbBender'9071.50 |
12-01-2023, 03:20 PM | #9 |
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03-24-2024, 02:30 AM | #10 |
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Quick update..logged a draggy run with 3 gallons of E85 and got a new personal best.
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