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BMW M5 F90 (2018+) General Forums Engine, Exhaust, Drivetrain, Tuning Modifications    100 or 110 octane for Jb4 map 5/7

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      08-24-2019, 07:24 AM   #1
M4LAKA
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I'm going to the track today. Would like to test out map 5 and maybe 7. Is 110 suffice or should I fill with 110(they also have 114 unleaded)
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      08-24-2019, 12:48 PM   #2
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MS109 which is unleaded fuel is the best option, but any unleaded racing gas will do.

If testing out higher maps the default JB4 boost safety is set to 26psi so you might want to raise that to 28psi as otherwise you won't get the full benefit of higher maps.
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      08-25-2019, 07:01 AM   #3
le rafiot
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Yesterday
Full ms 109
Jb4 map 7
1.69 0-60 feet
10.44 a 136.7 mph
Drag Matane (Québec)
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      08-25-2019, 09:00 AM   #4
M4LAKA
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I ran a 10.8 with map 7, 110 octane fuel. Really disappointed with my trap speed considering my 60. Hope nothing is wrong with my car.
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      08-25-2019, 10:44 AM   #5
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Quote:
Originally Posted by le rafiot View Post
Yesterday
Full ms 109
Jb4 map 7
1.69 0-60 feet
10.44 a 136.7 mph
Drag Matane (Québec)
very nice. what was da for you? also, what about the 1/8 mile et/trap. very quick and fast indeed.

Quote:
Originally Posted by M4LAKA View Post
I ran a 10.8 with map 7, 110 octane fuel. Really disappointed with my trap speed considering my 60. Hope nothing is wrong with my car.
still pretty quick man. but, yeah, that's just about the best 60ft we'll see in a stockish car. what was your weather/da? how did the logs look?
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      08-25-2019, 11:00 AM   #6
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Quote:
Originally Posted by M4LAKA View Post
I ran a 10.8 with map 7, 110 octane fuel. Really disappointed with my trap speed considering my 60. Hope nothing is wrong with my car.
also, did you shift when running through the gears? have you experimented with letting the car shift vs finding the optimum point to pull the paddle? I've def seen improvement when shifting myself.
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      08-25-2019, 03:55 PM   #7
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Quote:
Originally Posted by FloridaM5 View Post
also, did you shift when running through the gears? have you experimented with letting the car shift vs finding the optimum point to pull the paddle? I've def seen improvement when shifting myself.
DA was 1153 i believe

I let launch control do everything and it shifted automatically. put suspension on comfort and tire pressure to 25-26psi

terry said my logs were clean. my 100-200kph time was 6.81

Just was expecting a lot more with 110 octane and map 7
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      08-25-2019, 04:23 PM   #8
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      08-25-2019, 04:52 PM   #9
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Quote:
Originally Posted by M4LAKA View Post
Quote:
Originally Posted by FloridaM5 View Post
also, did you shift when running through the gears? have you experimented with letting the car shift vs finding the optimum point to pull the paddle? I've def seen improvement when shifting myself.
DA was 1153 i believe

I let launch control do everything and it shifted automatically. put suspension on comfort and tire pressure to 25-26psi

terry said my logs were clean. my 100-200kph time was 6.81

Just was expecting a lot more with 110 octane and map 7
use lc, but try shifting manually from 3rd to 4th and the rest of the shifts afterwards. I don't have jb4, but I picked up .3 seconds in my 100-200 just doing this...around 6500-6800 rpms...maybe play a bit and see how you do.
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      08-25-2019, 05:48 PM   #10
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Quote:
Originally Posted by FloridaM5 View Post
very nice. what was da for you? also, what about the 1/8 mile et/trap. very quick and fast indeed.



still pretty quick man. but, yeah, that's just about the best 60ft we'll see in a stockish car. what was your weather/da? how did the logs look?
Da 187 ft
1/8. 6.79 a 106.9
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      08-25-2019, 05:53 PM   #11
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Quote:
Originally Posted by le rafiot View Post
Quote:
Originally Posted by FloridaM5 View Post
very nice. what was da for you? also, what about the 1/8 mile et/trap. very quick and fast indeed.



still pretty quick man. but, yeah, that's just about the best 60ft we'll see in a stockish car. what was your weather/da? how did the logs look?
Da 187 ft
1/8. 6.79 a 106.9
nice job bud...and thanks for sharing the vids. looks like fun!

do you manually shift or let the car do it?
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      08-25-2019, 07:13 PM   #12
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      08-26-2019, 09:07 AM   #13
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Quote:
Originally Posted by FloridaM5 View Post
Quote:
Originally Posted by le rafiot View Post
Yesterday
Full ms 109
Jb4 map 7
1.69 0-60 feet
10.44 a 136.7 mph
Drag Matane (Québec)
very nice. what was da for you? also, what about the 1/8 mile et/trap. very quick and fast indeed.

Quote:
Originally Posted by M4LAKA View Post
I ran a 10.8 with map 7, 110 octane fuel. Really disappointed with my trap speed considering my 60. Hope nothing is wrong with my car.
still pretty quick man. but, yeah, that's just about the best 60ft we'll see in a stockish car. what was your weather/da? how did the logs look?
I am more disappointed with my trap speed. I did 129 with pump gas map 2. And only 130 race gas map 7
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      08-29-2019, 01:15 PM   #14
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Quote:
Originally Posted by FloridaM5 View Post
Quote:
Originally Posted by M4LAKA View Post
Quote:
Originally Posted by FloridaM5 View Post
also, did you shift when running through the gears? have you experimented with letting the car shift vs finding the optimum point to pull the paddle? I've def seen improvement when shifting myself.
DA was 1153 i believe

I let launch control do everything and it shifted automatically. put suspension on comfort and tire pressure to 25-26psi

terry said my logs were clean. my 100-200kph time was 6.81

Just was expecting a lot more with 110 octane and map 7
use lc, but try shifting manually from 3rd to 4th and the rest of the shifts afterwards. I don't have jb4, but I picked up .3 seconds in my 100-200 just doing this...around 6500-6800 rpms...maybe play a bit and see how you do.
What's your 100-200 khm time?
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      08-29-2019, 01:28 PM   #15
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Quote:
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Quote:
Originally Posted by FloridaM5 View Post
Quote:
Originally Posted by M4LAKA View Post
Quote:
Originally Posted by FloridaM5 View Post
also, did you shift when running through the gears? have you experimented with letting the car shift vs finding the optimum point to pull the paddle? I've def seen improvement when shifting myself.
DA was 1153 i believe

I let launch control do everything and it shifted automatically. put suspension on comfort and tire pressure to 25-26psi

terry said my logs were clean. my 100-200kph time was 6.81

Just was expecting a lot more with 110 octane and map 7
use lc, but try shifting manually from 3rd to 4th and the rest of the shifts afterwards. I don't have jb4, but I picked up .3 seconds in my 100-200 just doing this...around 6500-6800 rpms...maybe play a bit and see how you do.
What's your 100-200 khm time?
6.5x with da around 2200-2500
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