05-06-2014, 02:30 PM | #1 |
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BMS +2.5 PSI Dyno result
Still don't like the torque line.
Here is Dyno +2.5 PSI over stock And +3 PSI over stock
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05-06-2014, 07:00 PM | #5 |
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94 octane + NOS octane booster. Unwrapped the car a few weeks ago.
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05-06-2014, 07:47 PM | #6 |
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Those are interesting results you know at 2.25 and average about 94 octane I hit 590rwhp and 545W Lb/FT and I dont have any mods at all..I wonder if that exhuast is robbing your torque??
I need to retest with new settings
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05-07-2014, 02:47 PM | #7 |
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Great numbers!
Thanks for sharing Mr.Karim! LSM - We need to do a side by side comparison & dyno run at EAS!
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05-07-2014, 04:39 PM | #8 |
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Interesting , you are still running too lean on several of those runs and that's why you're torque is low . An AFR of 16 plus, is really unsafe at redline if those are accurate. Do you have any stored error codes in the ECU ? I'd get you're car checked out , and until then go back to the standard 2.25 setting on the old firmware .
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05-07-2014, 05:49 PM | #9 | |
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05-08-2014, 02:05 AM | #10 | ||
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05-08-2014, 11:54 AM | #11 | |
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Joey, Sounds good, when you avail?
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05-12-2014, 02:41 PM | #12 |
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Hi, coming from a tuning background, you are running really lean there , turbo charged cars should be running between 11-13 on the AFR on full boost, depending on the timing. If you ever hit 14-16 on a Jap car , it would have gone pop by now, just shows you how well engineered these engines and ECU are. This ECU must be running knock detection and pulling power back tremendously. I would suspect its your de-cats that has caused this, as the exhaust is flowing without any restrictions.
Have you dyno'd the car with the cats on before ? so you can compare the AFR, your car looks great . Get it seen to before you do anymore crazy runs . |
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05-12-2014, 05:44 PM | #13 | |
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05-12-2014, 06:34 PM | #14 |
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From the tuning world that I have come from, reducing the restriction in an exhaust system and allowing the engine to breath better always requires additional tuning to compensate for this .
I am not sure about how the BMW M6 ecu handles this, it may have parameters to compensate within a certain range , but looking at you dyno graph it seems that the ecu is not running O2 feedback . This is were it self tunes itself if the values of the AFR exceeds a certain range. This is a great idea but relies on one aspect , the lambda sensor is accurate. A lot of GM motor cars have this feature as they have 2 banks of sensors. Then again , seeing the AFR reaching such a high value and the ecu reducing the power , says one thing about these cars , the ecu is pretty good . I bet it is also reducing boost . It's a shame you haven't got boost reading on the dyno graph aswell. On the other hand , it could be a faulty wideband sensor on the dyno , giving you wrong readings . Get it dyno'd again and but put the piggy back to stock setting then slowly increase the boost on each of the run . Make sure they log the boost , AFR, torque ,hp on the same graph . But in the mean time , knock the boost to stock to be safe . I am hoping to stick mine on the dyno this weekend to see what the AFR is like on boost, don't get to involved in chasing numbers on a dyno, tuning is all about power delivery and drive ability, pointless having all the power up top when there is nothing mid range . |
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