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All COBB Tuning AccessPORT Flash for N54 335i Discussion Here
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12-07-2012, 04:11 PM | #6689 | |
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12-07-2012, 04:31 PM | #6690 |
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I read a post somewhere from a guy who had slightly different numbers between his slip and the AP. but that would be expected. it was pretty close, but i believe the AP was reading faster times. Can the AP compensate for wheel dia?
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12-07-2012, 04:42 PM | #6691 |
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The AP is using the ABS signal for MPH/distance calculations so that automatically takes wheel diameter into account.
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12-07-2012, 04:56 PM | #6692 |
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awesome, didn't know that.
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12-07-2012, 05:54 PM | #6693 | |
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Not the drivers side with the adjustable fins... I'm referring to the vent above that that is not adjustable and is at a fixed angle towards the driver side window (defrost purposes) have you tried that vent and then angled the Cobb AP towards you. I just think it would be easier to see and keep your eyes on the road while driving (easier to use as a shift indicator as well, since its higher up and closer to eye level) |
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12-07-2012, 06:04 PM | #6694 |
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12-07-2012, 06:41 PM | #6695 | |
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The thing to keep in mind is that the measurements it provides should be used to show deltas rather than absolute figures(just like a dyno.) So as long as it's just being used to compare different maps its fine.
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12-07-2012, 07:30 PM | #6696 | |
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I'll get back to you tomorrow and test it out.
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12-07-2012, 08:19 PM | #6697 |
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No, it doesn't take wheel diameter or tire size into account; but since it uses the wheel speed sensors any changes in gearing (rear end or transmission) won't matter to it. All it can do is measure each time the wheel turns; how far the car moves for each revolution is a mystery to it. Bigger overall circumference of tires will cause the speedo to read slower (and thus the AP slower), shorter tires will cause it to read fast.
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12-07-2012, 09:53 PM | #6698 | |
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12-08-2012, 11:05 AM | #6699 |
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I think it reads fast because our speedos are all calibrated to read fast, and thats what the AP uses to know how far you've gone/how fast you're going.
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12-08-2012, 11:09 AM | #6700 |
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I think your right.
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12-10-2012, 11:00 AM | #6701 | |
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Is it possible to get leak codes on more aggressive MAPs (18.5 psi) on not mild MAPs (15 psi)? I would assume if I had a true leak, I would have gotten one on the OTS S1+ Drive MAP? I have a funny feeling the code was thrown because the car hadn't fully adapted to S1+ Agg. from my Pro Tune? could that be a cause?
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12-10-2012, 11:04 AM | #6702 | |
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12-10-2012, 11:44 AM | #6703 | |
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12-10-2012, 12:03 PM | #6704 | |
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FYI, I did get some very minor throttle closures on OTS S1+ Drive, since its so minor I would think the DME would correct/adapt itself after a few more WOT.
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12-10-2012, 12:10 PM | #6705 |
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12-10-2012, 12:12 PM | #6706 |
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Looking forward to your results. I think i may invest in one myself.
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12-10-2012, 12:18 PM | #6707 |
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I know a lot of people use the VBox, is there any significant difference in features (since the Vbox & Gtech both seem to be equally accurate)?
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12-10-2012, 12:18 PM | #6708 | |
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When i ran in gainesville in the summer heat my best was 13.0 @115, so its about what i would expect, given the temperature difference. ...Now if only i could learn how to launch... I went out with a buddy to see what kind of times his 535 would run, couldnt get enough satellites through DENSE cloud cover, only downside i've seen yet. |
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12-10-2012, 12:21 PM | #6709 |
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Before purchasing it i read a few reviews of people comparing times side by side to vbox - they were VERY close. The only thing that sucks is that gtech times will not be accepted as official for 1/4 mi, or 60-130 because it doesnt log altitude, so slope cannot be confirmed. But I could care less, i'm not trying to break any records.
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12-10-2012, 12:26 PM | #6710 |
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Same here, i just want it for data collection not bench racing.
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