03-26-2018, 03:49 PM | #67 | |
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2022 x5 m50i - Dravit grey
2005 evo 8 (current) built 2.3 488/409 mustang dyno Old stable mates - 87 325i, 88 m3, 90 m3, 97 m3 4dr, 04 325xi, 91 gmc Syclone, 08 335xi, and 13 x3 35i msp 2014 x5 50i msport |
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03-26-2018, 04:55 PM | #68 | |
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03-26-2018, 06:22 PM | #69 | |
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I have seen other n63tu dynos as well and the consensus seems to be around 390rwhp, which if you do the math (15% drive train loss on a rwd vehicle) puts it at 458 crack. This is right in line with typical BMW under claiming actual HP. The dyno BPC is showing at the net +127 claim seems a bit odd. I am not sure what vehicle they were running but it only did 350rwhp stock, far less than the 550i in the other example. Still using a dynojet, this would be only 409 crank under the same math assumptions. That crank number looks like the old n63 number to me and far less than factory. Even Terry @ BMS dynoed a stock 550i and it was 392. So it makes you wonder whose claims are right. To be fair, DusH did all wheel dyno his 50i and it made 455 or something on a hot day and it was a mustang dyno which said typically reads 20hp lower than a dynojet. That would put it right into the 470awhp area. Again, this is in line with the other plots and even BPCs high number. To me, that stock number BPC has is suspect. I think the REAL net wheel hp is somewhere around 70-75 with a stage 1 tune. This is far from aggressive for a BMW engine IMO. A stage 1 tune on my old 335i netted around the same on a dyno and that engine and platform handled it fine for years. Hope that helps. Last edited by AZTWW; 03-26-2018 at 06:55 PM.. |
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03-26-2018, 06:59 PM | #70 | |
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2022 x5 m50i - Dravit grey
2005 evo 8 (current) built 2.3 488/409 mustang dyno Old stable mates - 87 325i, 88 m3, 90 m3, 97 m3 4dr, 04 325xi, 91 gmc Syclone, 08 335xi, and 13 x3 35i msp 2014 x5 50i msport |
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03-26-2018, 07:40 PM | #71 | |
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I'd hope the bm3 tune produced the same and those results would be +120hp crank increase. Keep us updated on your results. Mine is at the dealer getting new plugs and evaporator so it should be good for a tune when I get it back. |
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03-26-2018, 11:05 PM | #72 | |||
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03-30-2018, 10:13 AM | #73 |
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03-30-2018, 08:29 PM | #75 | |
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I go back and forth, but I'm currently leaning towards BPC's tune. It's more expensive, but if you head over to the 5 and 6 series forums, at least you can find some people who are using them. In addition, they quickly and intelligently answered all the questions I asked them a couple weeks ago. As long as there is the capability to do some data logging and tweaking, I think it may be a winner.
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03-30-2018, 09:09 PM | #76 | |
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This is an outstanding tune. I will drive it for a few days and then I will flash it back to factory to make sure that works correctly. $595 and you can do the flash yourself? Nice. |
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03-30-2018, 09:18 PM | #77 | |
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03-30-2018, 09:40 PM | #78 | |
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I do like the fact that you can get ahold of a tuner and do a custom tune for your own x5. I had a custom tune for my 335i so I remember the process. That alone might sway me to bm3. I think I'll pull the trigger in two weeks. Then I will see if all the talk Ian for real. |
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03-30-2018, 09:43 PM | #79 | |
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BTW. There are not a plethora of tunes for a stock 6. Most of the variants assume a non-stock component is installed. There is basically a 91 or 93 octane tune for stock 6s for free. You can request a custom tune for both engines. |
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03-30-2018, 10:56 PM | #80 |
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I have read something in the past that there is a limit on how many times the DME can be flashed.
Did you guys looked into that information yet? Hopefully it is different with the newer DME.
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03-31-2018, 12:24 AM | #81 |
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03-31-2018, 12:38 AM | #82 | |
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Been a while since I play with ECU flash. The only option was to go aftermarket ECU when I was helping building race cars.
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03-31-2018, 05:44 AM | #83 | |
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03-31-2018, 09:05 AM | #84 | ||
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Quick question, did it actually take only 3-4 min to unlock the ECU and flash. That seems very fast, and did you use any battery charger?Thanks! |
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03-31-2018, 10:18 AM | #85 |
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No battery charger, but I did make sure I had a full charge. The car had been driven for about 4 or 5 hours before the flash. I was very concerned about not putting the charger on, so I was very cognizant of the time. It was definitely within 3 or 4 minutes. I used the OBD cable we use to code and a mac. Java is needed and this is very important: You need the Java JDK, NOT the JRE.
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03-31-2018, 10:28 AM | #86 | |
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Im still waiting for some hardware to be installed!( Down-pipe and charge pipe) then will directly buy stage II. Is that even possible or do I need to by stage I then upgraded for an extra cost? |
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03-31-2018, 10:37 AM | #87 |
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Nope. You can choose the tune that matches your configuration right out of the gate.
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03-31-2018, 07:43 PM | #88 | |
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