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2Addicts | BMW 2-Series forum Technical Topics N55 (M235i) Engine, Transmission, Exhaust, Tuning Will it make a difference on the dyno if i use 108 unleaded octane?

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      09-07-2021, 07:19 PM   #1
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Will it make a difference on the dyno if i use 108 unleaded octane?

Hey guys this might be a dumb question but i'm just curious so when I end up dynoing my car at some point, i was wondering if running 108 unleaded would make a difference over running 100 unleaded? And also if i got a custom tune from jordan tuned for race gas or 108 specifically (idk if he would make a tune for general race gas or for the actual 108), would that make a huge difference?

Let me know!
Thank you for your help!
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      09-08-2021, 08:27 AM   #2
AmuroRay
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It can if you have the supporting mods and a tune to match. I would strongly encourage you to get a HPFP if you haven’t already.
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      09-08-2021, 10:46 AM   #3
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I ran 100 on the bm3 race gas tune, it was smooth but made 50tq less than regular 93. I wasn't impressed.
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      09-08-2021, 05:28 PM   #4
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Quote:
Originally Posted by AmuroRay View Post
It can if you have the supporting mods and a tune to match. I would strongly encourage you to get a HPFP if you haven’t already.
I'm thinking of getting one anyway. Couldn't I also run full E85 if i change it out? What other things would i be able to do if i upgrade it?
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      09-09-2021, 06:23 PM   #5
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Quote:
Originally Posted by white_f22 View Post
I'm thinking of getting one anyway. Couldn't I also run full E85 if i change it out? What other things would i be able to do if i upgrade it?
Are you on BM3 or MHD? If you have BM3, the OTS S2+ E30 map will pretty much tap out the stock turbo. If you have MHD, you can reach out to Bob from Stage FP for a great tune. MHD also has a few Race Gas maps.
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      09-10-2021, 05:57 PM   #6
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Quote:
Originally Posted by AmuroRay View Post
Quote:
Originally Posted by white_f22 View Post
I'm thinking of getting one anyway. Couldn't I also run full E85 if i change it out? What other things would i be able to do if i upgrade it?
Are you on BM3 or MHD? If you have BM3, the OTS S2+ E30 map will pretty much tap out the stock turbo. If you have MHD, you can reach out to Bob from Stage FP for a great tune. MHD also has a few Race Gas maps.
if i use the Stage 2 E30+ map could it damage my turbos?
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