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M2 Technical Topics > N55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > Bootmod3 M2 OTS map update - Version 5.6

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      05-06-2019, 09:22 PM   #199
Anthony1s
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What is ACN?
Arizona, California, Nevada. From what I understand, their fuel is different than the rest of the USA and performs worse.
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      05-06-2019, 09:47 PM   #200
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(A)rizona(C)ali(N)evada

Aka the 3 states almost guaranteed to have shitty gas that is not up to the advertised oct rating
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      05-06-2019, 09:53 PM   #201
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Originally Posted by ecitizen View Post
What is ACN?
Arizona, California, Nevada

https://www.bobistheoilguy.com/forum...Number=2808264
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      05-07-2019, 12:51 AM   #202
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I'm in AZ with FBO running stage 2, 91 octane 5.7 and it has been great as far as driving. Any reason I should change to ACN and will it have less power or just not as harsh on the car? I use shell 91 octane.
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      05-07-2019, 09:48 AM   #203
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I'm in AZ with FBO running stage 2, 91 octane 5.7 and it has been great as far as driving. Any reason I should change to ACN and will it have less power or just not as harsh on the car? I use shell 91 octane.
Have you data logged your car?
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      05-07-2019, 10:17 AM   #204
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Originally Posted by nioh_lbbm2 View Post
Quote:
Originally Posted by ecitizen View Post
I'm in AZ with FBO running stage 2, 91 octane 5.7 and it has been great as far as driving. Any reason I should change to ACN and will it have less power or just not as harsh on the car? I use shell 91 octane.
Have you data logged your car?
No I haven't.
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      05-07-2019, 10:19 AM   #205
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Originally Posted by nioh_lbbm2 View Post
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Originally Posted by ecitizen View Post
I'm in AZ with FBO running stage 2, 91 octane 5.7 and it has been great as far as driving. Any reason I should change to ACN and will it have less power or just not as harsh on the car? I use shell 91 octane.
Have you data logged your car?
No I haven't.
Highly recommend that you do on your current OTS map to see if your car is actually ok. These 3 states and more on the west coast are well known to have truly bad gas. Best to be sure for your case
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      05-07-2019, 10:26 AM   #206
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Quote:
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Originally Posted by ecitizen View Post
Quote:
Originally Posted by nioh_lbbm2 View Post
Quote:
Originally Posted by ecitizen View Post
I'm in AZ with FBO running stage 2, 91 octane 5.7 and it has been great as far as driving. Any reason I should change to ACN and will it have less power or just not as harsh on the car? I use shell 91 octane.
Have you data logged your car?
No I haven't.
Highly recommend that you do on your current OTS map to see if your car is actually ok. These 3 states and more on the west coast are well known to have truly bad gas. Best to be sure for your case
Thanks. What might the gas cause if the car feels like it runs fine and what's the difference with the ACN tune?
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      05-07-2019, 10:33 AM   #207
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Quote:
Originally Posted by ecitizen View Post
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Originally Posted by nioh_lbbm2 View Post
Quote:
Originally Posted by ecitizen View Post
Quote:
Originally Posted by nioh_lbbm2 View Post
Quote:
Originally Posted by ecitizen View Post
I'm in AZ with FBO running stage 2, 91 octane 5.7 and it has been great as far as driving. Any reason I should change to ACN and will it have less power or just not as harsh on the car? I use shell 91 octane.
Have you data logged your car?
No I haven't.
Highly recommend that you do on your current OTS map to see if your car is actually ok. These 3 states and more on the west coast are well known to have truly bad gas. Best to be sure for your case
Thanks. What might the gas cause if the car feels like it runs fine and what's the difference with the ACN tune?
You won't feel anything just cruising but you will have inconsistent timing when pushing your car and even then you won't feel it. This is why all tuners no matter the car or platform create tunes while viewing logs in real-time in one form or another. Just because you don't feel something does not necessarily mean your engine is not running at an optimal level

All tunes are specific to the gas available to the owners. ACN map is just another offering for our gas to get the most reliable and safe power for the gas available. Check my ACN forum thread and you'll see what I mean
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      05-07-2019, 03:40 PM   #208
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Thanks. What might the gas cause if the car feels like it runs fine and what's the difference with the ACN tune?
All the research I've done indicates that ACN91 is still 91 octane, and that the difference is there are more detergents in ACN91 than other USA 91. Detergents to me mean something that will break down the oil as it lubricates the cylinder walls. So my inclination is to believe the ACN91 tune has a little less boost and/or timing than the regular 91 tunes, to prevent excess heat on the engine oil which is slowly degrading due to the fuel detergents.
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      05-07-2019, 03:49 PM   #209
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Found plenty of 100octane pumps in Nevada since I've moved out here.

I'm a happy camper. And the car certainly performs better.
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      05-07-2019, 07:00 PM   #210
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Quote:
Originally Posted by Anthony1s View Post
All the research I've done indicates that ACN91 is still 91 octane, and that the difference is there are more detergents in ACN91 than other USA 91. Detergents to me mean something that will break down the oil as it lubricates the cylinder walls. So my inclination is to believe the ACN91 tune has a little less boost and/or timing than the regular 91 tunes, to prevent excess heat on the engine oil which is slowly degrading due to the fuel detergents.
It meets the requirements of being 91 octane (maybe) by combing RON and MON in a way that's inferior to other non ACN 91 fuels. The amount of knock Nezil was getting on the stock BMW M2 tune on ACN 91 was disturbing.
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      05-08-2019, 07:37 AM   #211
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Post your 100-200 / 60-130 with new update guys
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      05-11-2019, 02:09 AM   #212
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Post your 100-200 / 60-130 with new update guys
This is v5.7 , stage 2 98 ron
Full tank, 20 degrees Celsius
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      05-15-2019, 06:57 AM   #213
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Stage 2 93 octane OTS Version 5.7 dyno'd to 405WHP



Name:  M2 Stage 2 93 octane dyno.jpg
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Name:  WhatsApp Image 2019-05-15 at 12.46.45.jpeg
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      05-15-2019, 09:28 AM   #214
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Stage 2 93 octane OTS Version 5.7 dyno'd to 405WHP



Attachment 2053899
Attachment 2053900
Can't see the attachments - impressive - what other mods and was it on pump fuel only ?
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      05-15-2019, 11:11 AM   #215
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Can't see the attachments - impressive - what other mods and was it on pump fuel only ?
Yeah it won't show - lol.


Maybe now?

Stage 2 93 octane. Pump fuel and supportive mods.
Name:  M2 Stage 2 93 octane dyno.jpg
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      06-09-2019, 05:18 PM   #216
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Halim, if I want to get in touch with you should I email Protuningfreaks or something else? Since I just created an account I can't message you first on the forum. Thanks in advance!
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      06-10-2019, 08:04 PM   #217
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Halim, if I want to get in touch with you should I email Protuningfreaks or something else? Since I just created an account I can't message you first on the forum. Thanks in advance!
Sales or Support related?
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      06-10-2019, 10:06 PM   #218
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Sales or Support related?
Thanks, manage to message him after all.
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      12-08-2019, 09:57 AM   #219
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I just realized what ACN is after reading this thread and looks like Im supposed to use that tune given I'm in Vegas.

I flashed my car with stage 1 91 fairly recently and it feels fine to me. The interesting thing is the ACN 91 shows that it is BETA.

Anyone switched from regular to ACN that can share their experiences?
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      12-08-2019, 10:44 AM   #220
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I just realized what ACN is after reading this thread and looks like Im supposed to use that tune given I'm in Vegas.

I flashed my car with stage 1 91 fairly recently and it feels fine to me. The interesting thing is the ACN 91 shows that it is BETA.

Anyone switched from regular to ACN that can share their experiences?
Yes. I'm in California and created a thread with my experience. Check my history. For me ACN map was a must even on stage 1
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