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E90 330i MILV's headers BPC tune dyno disappointment
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06-14-2018, 10:48 AM | #1 |
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E90 330i MILV's headers BPC tune dyno disappointment
So I finally went to a dyno, what a disappointment...
The results are on the crank and not on the wheels. Any one have a clue what is wrong? Car was refilled with Shell V-power racing 100 octane fuel. Mods: Rev Motoring Silicone Intake Hose PI Catless Headers Pedal Box v2 Milv's BPC Tune I wonder if the dyno is'nt the problem. Engine on the road goes up to 7200RPM after the tune but somehow on the graph the curve never even reach the 7000RPM.
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E90 330i Euro Spec, Arktis Metallic, Eibach Pro Kit, Rev Motoring Silicone Intake Hose, Turboworks Headers, PI, Milv's, BPC Tune.
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06-14-2018, 11:25 AM | #3 |
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KM is hp.
243,4 KM (hp) is 179 kW. The Car is manual.
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06-14-2018, 11:28 AM | #4 |
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06-14-2018, 11:34 AM | #6 |
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What's is a Pedal Box and is that screwing with your fuel mixtures?
Look into the conversion factor used to convert the measured power RWHP to Crankshaft HP. |
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06-14-2018, 11:41 AM | #7 |
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That's Pedal Box AKA Sprint Booster but made by Germans:
https://www.pedalbox.com/en/ Can Pedal Box screw with the fuel mixture? Seems unlikely
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06-14-2018, 11:44 AM | #8 | |
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06-14-2018, 11:44 AM | #9 | |
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Maybe my Timing chain is to be blame? I have 144kkm , 90.000 miles.
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Noir893.00 |
06-14-2018, 11:52 AM | #10 |
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So you say I should go for another run without the damn thing?
If that pedal box would be to blame for power loss I should fell extra hp after removing it.It's hard to believe because I don't feel any extra power without it. With my set-up it should be around 280, 290hp so I would definitely feel the difference.
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06-14-2018, 11:56 AM | #11 | |
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Did you also run the adaptations in INPA or the like to account for the valvetronic relearn? |
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06-14-2018, 11:58 AM | #12 | |
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06-14-2018, 12:12 PM | #13 |
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06-14-2018, 12:20 PM | #14 |
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People here and on most similiar topics said that valvetronic does"nt need a relern procedure because it should re-learn by its own at a start up. I have INPA so can give it a try.
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06-14-2018, 12:32 PM | #15 |
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06-14-2018, 12:55 PM | #16 |
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Looks low, but a dyno is almost worthless without a reference point. Do you have a graph, from the same dyno, of your car before you installed the mods? Do you have figures for other cars, whos power output you are sure of, on the same dyno? etc.. you get the point. Without knowing who set up your run, what variables the computer is using to adjust the output figures, how the physical equipment has been set up, etc... your output figures are basically useless.
Now, if you want to assume that the dyno should and would output figures that you're expecting it to, I'd start with what has been suggested, and remove the 'pedal box' first, then go from there. What's the point of two 'tunes' on one car, anyway? The reason the graph never reaches 7000 RPM is because the dyno operator most likely is watching the graph as he's giving throttle, and when he sees the TQ/HP start to decrease, he is 'shutting her down' early.. because why not.. the peak numbers (all most care about) aren't changing. Does the car feel faster than stock? That's what really matters at this point. Are you absolutely sure that those figures are "crank" measurements (conversions)? The numbers look about right (a little low maybe) for WHP with your mods.
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06-14-2018, 01:44 PM | #17 | |
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@atmosphericM I didn’t made a stock basic dyno run. I know that I should and it would made things a lot easier now, but I haven’t. I'm thinking ditching the pedalbox, VVT relearn and maybe another dyno would tell me more.
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Last edited by Wally_84; 06-14-2018 at 01:52 PM.. |
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06-14-2018, 01:46 PM | #18 |
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Get a real tune! Avoid Mickey Mouse BS!!
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06-14-2018, 02:02 PM | #19 |
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^ He has BPC, just also using the pedal box with it.
OP, I wouldn't bother dyno'ing until you do something that makes a big difference in power, something that is night and day difference. If you're truly only at 250 crank HP, you are missing out on like 50 crank HP. You'll know when it appears. Like you said, ditch the box and reset. Good luck my friend! |
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06-14-2018, 02:03 PM | #20 |
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10/10, would look at that pedal box, my dude.
I'd remove it. I removed my powerbox prior to BPC dyno tuning my e90 last year, with the knowledge that the box would conflict with what Bob wrote in the tune. I did it with AAs tune, MOSTLY kept on throttle remap because the touchier throttle advertised at the time, was not living up to what I wanted. BPC on the other hand, got it where it should be. And if it works like the powerbox does, where you can switch maps/ Turn off (thisthisthis.) while holding the accelerator down and cycle through each map with a press of the accelerator while the dash is powered on, try doing a run with the jank disabled/no map selected. I KNOW getting inside that box to mess with the pins is tiresome... I just hope this is possible for you so you can do a non-invasive change to see if it's the culprit or not.
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06-14-2018, 02:32 PM | #21 | |
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rjahl helped me out with it. Night and day difference (and he rode in my car after) |
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06-14-2018, 03:33 PM | #22 | |
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I searched everywhere but failed and did not want to press buttons for the options I did not understand. I have send a pm to your friend hopfully he might be able to help.
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