07-22-2016, 11:34 AM | #595 | |
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07-24-2016, 12:02 PM | #596 |
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The 'gains' are 'calculated' (read: theoretical) for power/torque at the crank not at the wheels. I don't believe anyone has been able to appreciably replicate their claimed output at the wheels.
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07-26-2016, 03:05 PM | #597 |
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Only way to accurately measure would be to take the engine out and put it on an engine dyno.
Otherwise you can just use theoretical drivetrain loss compared to stock. You'll need a before and after on the same dyno to compare the delta. |
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07-27-2016, 10:01 AM | #598 |
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Wow this thread has been quite the read. Lots of good info and some misinformation too, but overall I learned allot and it pushed me towards my ultimate decision to go with the S1 Signature package from Dinan. My ride is a 2016 M235 with about 5000 miles on her. I put the upgrades in about a week ago and have since taken her on a number of long cruises, accumulating about 600 miles with the upgrades. My experiences have been highly positive. An increase in power that you can really feel in the seat of your pants, massive improvement in day to day driveability (power delivery is both smoother and more linear), and a very high quality (clean install) well finished product. The spring and bump stop upgrades improved handling massively as well. No more high speed "float" issues which were unnerving (to say the least), when changing lanes and driving at higher speeds. I also switched out the wheels for the M Sport 19" Style 624M, with the associated bigger rubber to go with them. My almost local dealer did all the installation and sales work. Numbers were competitive, install was clean, and the car drives the way it should have come out of the factory (similar, if not better than my 2013 335is MT coupe I retired) Overall highly recommend this group of upgrades !
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07-27-2016, 03:13 PM | #599 |
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A stage 1 tune adds a constant level of boost over the factory power curve. It can't make things more linear as it is not adjusting power by RPM, it's simply amplifying the factory power curve by the same 3-4 psi all the time. Not saying this is a bad thing, but the Dinan, like all stage 1 tunes, does not make the power curve any more or less linear. Glad you like it and I'm sure it's better than stock.
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07-27-2016, 05:56 PM | #600 | |
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07-27-2016, 05:59 PM | #601 | |
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07-27-2016, 06:15 PM | #602 | |
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That said every car is slightly different so for optimal results a custom dyno tune is the best possible option. Keep in mind however this would involve a flash tune to do right and thus opening up the factory DME to allow the tuning to take place. Then of course you have to make sure the person doing the tuning is doing it right and to your best interest. You also have the potential warranty concerns and other factors. Not everyone is comfortable with all of these things but the truth is that is the best course of action for maximum power... assuming its done right. |
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