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Vishnu/FFTEC: FlexFuel is Finally Here (425+whp dyno and logs)
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08-10-2012, 01:24 PM | #1 |
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Vishnu/FFTEC: FlexFuel is Finally Here (425+whp dyno and logs)
N54 users can now have True Flex-Fuel functionality! What this means that you can now run any mixture of E85 and have the PROcede adjust the tune accordingly. This is made possible by integrating a Siemens Fuel Composition Sensor (aka Flex-Fuel sensor) to the PROcede. With it able to accurately monitor ethanol content, the PROcede will advance ignition advance, enlean AFR targets and raise boost as a function of fuel composition. The Vishnu/FFTECFlexFuel conversion kit includes: -FlexFuel Sensor -Mounting bracket -Plug-and-play fuel lines -Plug-and-play wiring harness -PROcedeFlash DME reflash The last bit is one of the more interesting components of the system. The reflash removes some of the fuel limitations in the DME. Along with the PROcede's open loop fuel adjustments, fuel system capacity is raised considerably. This means that you won't see maxed out fuel trims or fuel rail pressure codes on the stock turbos. Even running upwards of 20psi. For now, you will need to send your DME to us for the same-day reflashing service. But later, this may change For more information, you can visit the Flex-Fuel Conversion page on our website HERE. It's still under construction so expect more information to be added over the next few days. Here is a dyno result running a 60% Ethanol mix (50/50 e85/91oct). 2007 335i 6AT (only DCI+FMIC) No meth. 100% stock exhaust. Datalogs: At full boost: -Fuel trims at full boost are stable in the 10-20% range. -Ignition advance is in the 12-16 deg range, reducing gradually as IAT increases -AFR is in the mid to low 12s Last edited by OpenFlash; 08-10-2012 at 02:18 PM.. |
08-10-2012, 01:28 PM | #2 |
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Here's another dyno results (@60% ethanol) from a 2008 6AT with ONLY DCIs. Stock everything else. No meth.
Stock cars routinely make 275whp on this dyno. And with AFR and Boost logged on our Mustang Dyno: Last edited by OpenFlash; 08-10-2012 at 01:39 PM.. |
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08-10-2012, 01:37 PM | #8 |
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Hi guys- These results are from customers cars running our new FlexFuel conversion kit (fuel composition sensor+DME update+new Procede firmware/maps). I'll have more info to post up later this weekend
BrianNM has been secretly testing a similar set-up for the past couple of weeks as well. Last edited by OpenFlash; 08-10-2012 at 01:47 PM.. |
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08-10-2012, 01:48 PM | #12 |
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2 questions:
1. How did you arrive at 60% ethanol content? Wouldn't 50/50 e85/91 equal = 0.5*85% + 0.5*10% = 47.5% ethanol content? 2. In what gear were the dyno pulls done?
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08-10-2012, 01:49 PM | #13 |
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It will be interesting to see what an FBO car can do with this. Between the single turbo, and the E85 developments, there should be some amazing track numbers popping up soon!
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08-10-2012, 01:51 PM | #14 | |
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All dyno runs were done in 4th gear as usual. Shiv |
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08-10-2012, 01:55 PM | #15 | |
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That said, I'd expect to see a FBO car making 440-445whp and at least 475lbft of torque at 60% ethanol content. |
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08-10-2012, 01:58 PM | #16 |
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very interested! patiently waiting for vishnu to take my money and DME!
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08-10-2012, 02:03 PM | #17 |
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Absolutely. Insane. Good job Shiv!
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08-10-2012, 02:06 PM | #18 |
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Thanks for the kind words guys. This is something that we've been working on for quite some time. It's nice to finally let you guys in on this little secret. It really does make a flexfuel 335i a reality
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08-10-2012, 02:12 PM | #20 |
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If we have rev 2.5 are we still able to do this? How much for the Flex Fuel upgrade? What about other aspects of the fuel system? I thought for true Flex Fuel capability that certain components (besides the sensor) were required because high levels of ethanol will break down hoses and fuel system components. Is this any risk or issue that we need to accept?
Thanks. Nice work! |
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08-10-2012, 02:28 PM | #22 | |
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As for fuel system compatibility with e85, everything looks good so far. Many people have been running strong e85 mixtures for quite some time. With our testing, we have routinely inspected fuel lines for any signs of premature wear/deterioration and no issues. Not surprising since most modern fuel systems are e85 compatible. |
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