07-20-2018, 08:50 PM | #134 |
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07-20-2018, 09:48 PM | #135 |
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Posting the datalog, talk about putting your money where your mouth is.
That said, any chance to see the datalog from the stock run? I'm curious on the differences in timing, lambda, etc? |
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07-20-2018, 09:59 PM | #138 | |
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However, my stock MPPSK AFR is a lot richer than the "MPPK" logs he posted. Curious as to how he came up with the "MPPK" tune. My AFR looks like his Stage 1 and 2 AFR, getting into the low 13's/high 12's with my JB4 in Map 0. |
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07-20-2018, 10:04 PM | #140 |
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07-20-2018, 10:52 PM | #141 | ||
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Here is a fully stock 340. First pull is for 91 octane and second 2 pulls are for few gallons of E85. Those logs I took few days ago and now they are on datazap, so I cant go back and rename the parameters to something more human, but I'm sure you can figure them out: https://datazap.me/u/missiontuning/2...?log=0&data=11 Now from today on the dyno, here is MPPK log: https://datazap.me/u/missiontuning/2...k?log=0&data=6 Quote:
"MPPK" tune is a factory file (swfk: 3c9e_080_017_001) loaded on computer with modified eeprom and cas certificate check. The file it-self is bare virgin factory flash. Your AFR are richer because your car has to make more boost/load to achieve torque target. MPPK can go from anywhere in 1700 to 2100hpa of boost at 5-6500rpm just to hit a desired demand. With load of anything under 155, you will be running stoich lambda all they way to redline since there is enough timing to meet the desired demand. On that MPPK run, we had E85, so even though there was some knock, computer didint pull timing as you can see due to engine not "Super Knocking"...YES, Super Knocking is actual BMW terminology as off N54/N55 days and is different then regular knock. |
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07-20-2018, 11:14 PM | #143 | |||
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07-20-2018, 11:16 PM | #144 |
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Fueling Limitations:
As we have found out by doing extensive and pretty risky testing, fueling system on B58 is MUCH better then the one on N55. On our 380whp pulls, even with few gallons of E85, we were able to maintain a very good 20MPa of rail pressure with safe drop to ~19MPa. Now, on a way back from the dyno, the car was running our 380whp revision as I decided to find the fuel system limits. I filled up with even more E85 bringing a tank mixture to around 8/7. After adjusting fueling for the mixture, I went on a drive to get a car adapted a bit. Around town the car felt good with even more mid range torque. Pushing it a bit in a gear showed no problem, but as soon as I did a 2-3-4th pull, the pump HPFP said "Hell No" and fuel pressure dropped. So from all the logging and testing it seems that at around 400whp/ the fuel system can hold about 2-4 gallons tops. That is more then enough to remove the unwanted knock and still give the HPFP a headroom. Now, on 93-95 octane, these cars should be capable of 450-470whp with stock pumps. Bmw doubles I really want to try and do a 2-3-4 pull with a bone stock M3. That could be a good test for sure. |
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07-20-2018, 11:33 PM | #145 |
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Any plans to dyno with a catless DP? Sucks you’re in Cali with crappy gas. I can see 410-415 whp with dp and 93 octane. I think I need to order this. Hello 11’s.
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07-21-2018, 12:25 AM | #146 |
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In comparison to a jb4 with the recommend 93 oct used how much more power is this flash tune making? And how bad is the cutout during wot shifts(torque reduction) will making this much power
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07-21-2018, 12:26 AM | #147 |
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Here's some testing against a stock M3: http://www.n54tech.com/forums/showpo...8&postcount=23
I was running 21 PSI on stock turbo with JB4 and meth. S55's are quick. |
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07-21-2018, 12:53 AM | #148 |
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Numbers not that impressive, is that dyno low reading?
Also, I’m located in SoCal with 91 octane max access running MPPSK tune, should I be running a couple gallons e85? Will I gain any power? |
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07-21-2018, 01:15 AM | #150 |
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Haven’t had it dyno’d but I would like to. Last dyno I saw was 370/370 but on 93 octane I think it was in Midwest. Burger tuning said e85 was not good on b58 because not enough fueling but this seems contradictory. Maybe I’m not understanding it but seems like the ethanol blend was good for their test car?
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07-21-2018, 02:10 AM | #151 |
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They’re also located in Southern Cali so those tests were done with our gold 91 octane.
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07-21-2018, 02:40 AM | #152 | |
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I love the raw logging channels , just wish I had some MDG1 files to dig around and a tool/car to flash with, would be interesting to learn more about these cars. Keep it up MP!
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07-21-2018, 06:24 AM | #153 | |
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07-21-2018, 08:53 AM | #154 |
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Nobody knows the exact answer to your first question, since no direct, same day, same dyno comparison has been done with the JB4 and this flash tune.
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