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BMW N54 AccessPORT Beta Race Fuel and E-30 Maps
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10-24-2012, 10:32 AM | #243 | |
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If you do not have E85 in the tank, do not run the E85 map. I don't think you will run into any issues as long as you baby it to the station but I would take the 30 seconds and flash to the proper map to be on the safe side. |
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10-24-2012, 10:35 AM | #244 | |
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Cobb needs to come out with on the fly map switching already.
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10-24-2012, 10:42 AM | #245 |
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Just run your tank very low and fill up with race gas. That should be good enough
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10-24-2012, 12:09 PM | #246 |
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For race gas, if you are running 91oct normally, get it down as low as you can (less than 2 gallons) and then put at least 6 gallons of 104oct in, that will get you to right around 100oct. Obviously more 104 will get you higher octane, but also adds weight.
No need to drain the tank, lol. |
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11-12-2012, 02:00 PM | #247 |
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Time to bump this thread up. I am planning on running my car for the first time this weekend and have a few questions in regards to race gas vs. E30. Most discussion in this thread is about blending E85 with pump gas. There isn't a whole lot of feedback on the race gas map.
I have ran the E30 maps and the car feels good. Logs look fine with the exception of a few timing corrections and the LPFP failing to meet requested PSI. I am not even close to maxing out fuel trims so that is good. I know very little about fueling so I have a few questions: Would I have the same issues with the LPFP not hitting requested PSI running race gas? My initial guess is no due to the fact that E85 is composed differently from standard pump fuel. Theoretically speaking, wouldn't it be safer to stick with race fuel over E85 on the stock fuel system? Will I need to blend the race fuel with 93 octane or is running 100% race fuel safe for the race fuel map? Would I see more power out of the race fuel map vs. the E30 map or will they be about the same? Throwing price and availability out the window, is there any reason to run E30 over race gas? |
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11-12-2012, 03:42 PM | #248 | |
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We made the same power with the E30 blend and race fuel. The race fuel will not tax the fuel system as much as an ethanol blend. In the end, it's up to what's available in your area, what you're willing to pay for fuel, and what you feel comfortable running. Whatever you do, make sure you log to verify the car is happy. Have fun at the track! -Josh |
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11-12-2012, 03:52 PM | #249 | |
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11-12-2012, 04:01 PM | #250 | |
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a lot of exchanging between race fuel vs ethanol..
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11-12-2012, 04:13 PM | #251 | |
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11-12-2012, 04:20 PM | #252 |
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11-12-2012, 04:32 PM | #253 |
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If cost is no object, I'd prefer race gas even though E85 is worth a few hp more. But cost and availability are usually an issue. I can get E85 in 3 places between my house and my work, and you can't argue with the performance.
Fuel trims are generally only an issue with alcohol. |
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11-12-2012, 04:36 PM | #254 | |
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11-12-2012, 04:41 PM | #255 |
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I'd go heavy on the E85. The timing map on the E30 OTS race map was really aggressive. I ended up running it at 50/50 and still ended up pulling a bit of timing here and there.
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11-12-2012, 06:29 PM | #256 | |
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I would start by doing the 30%, Log it and add another gallon of E85, log it and so on. Anything more I would guess the fuel trims would be off because its not designed for anything much more than E30. ACN 91 just sucks, just saying.
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11-12-2012, 07:26 PM | #258 | |
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-Josh |
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11-12-2012, 07:30 PM | #259 | |
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Generally, more ethanol means more knock resistance, but also more volume required from the fuel system. -Josh |
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11-12-2012, 07:32 PM | #260 |
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Really? That's not too bad to run E30 MAPs. That is approx. E35 on 10 gallons of 91.
How are the logs? Did you have to adjust the fuel scalar?
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11-12-2012, 08:41 PM | #261 |
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Anybody know of any easy access in the fuel system to siphon off some fuel to measure the ethanol content?
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11-22-2012, 03:17 PM | #262 | |
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And also for everyones information, there is a v4.03 e30 map available now.
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11-22-2012, 09:43 PM | #263 | |
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Cheers.
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11-24-2012, 12:39 PM | #264 |
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Also for everyones info the v4.03 map is now available. I'm gonna test it out in a few days, depending on how my clutch holds up...
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