01-14-2022, 08:31 AM | #23 | |
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01-14-2022, 10:59 AM | #24 | |
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01-14-2022, 11:29 AM | #25 |
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Last edited by Zeese; 01-14-2022 at 11:46 AM.. |
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01-14-2022, 11:46 AM | #26 | |
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One will see modest gains and the solution is inflexible regarding tweaking. Not for everyone. However, there is clearly a market for such tunes. A CarBahn flash tune review, or a Dinan flash tune review, will implicitly focus on the trade-offs between performance gains against level of effort, reliability (risk-taking), support, costs, etc. It is easy to state the tunes are not interesting. It takes a bit of effort to explain that for a different investment in dollars and time, one can have more flexibility at a cost of reliability. How much is too much per performance? These tunes are filling a niche. |
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01-14-2022, 12:54 PM | #27 |
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What evidence do we have to go on that the Carbahn tune is any safer than MHD or BM3 beyond the assumption that because it makes less power it’s safer or that “Steve said it was.”
That’s not to say that it’s NOT safer, but I’m just curious what data or information this is being backed up with? |
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01-14-2022, 11:22 PM | #30 |
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You are right. Evidence is a bit thin. The Dinan/CarBahn arrangements that derive both benefit and risk from being co-termed with BMW warranties is problematic. Is it 100% a marketing ploy? Probably not. A balance of risk/reward. Some gains, but not so much.
How do we value peace of mind for a modest performance improvement? |
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01-15-2022, 12:38 AM | #31 | |
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A second attempt, now, to slam out a few notes. Flashed back to stock this evening. After a spirited drive on some twisties, I can say the stock OG M2 is a ridiculous amount of fun. I did miss the Stage 2 bump. The car is a handful even without these oft-ridiculed Stage 2 gains The Telematics Unit Retrofit To 4G Cellular Technology update will require a reflash, since "... ISTA will automatically reprogram and code all programmable control modules that do not have the latest software." Post-update, one has to have a new tune created. Hope to be back driving with modest over-priced power gains, of dubious reliabilty, by midweek next. |
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01-16-2022, 06:38 PM | #32 | |
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06-24-2023, 09:46 AM | #33 | |
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Now that you have had this tune, for some time, I was wondering if you have ever had any issues related to it.
My local BMW dealer is now offering the CarBahn Flash Tune. I want to pull the trigger, but I am currently in the process of doing my 'due diligence' to find out more about it. I know it is offered with an additional paid warranty that will match the BMW factory warranty for whatever time you have left. I only have a few months left on factory and so there is no reason for me to spend the $750 on the warranty itself. The CarBahn warrant will only match the factory warranty and not my CPO. My CPO kicks in in November. And then goes until November 2024. My dealer has verbally let me know that they will honor my CPO with the tune, for most things - unless I do something crazy like blow the trans or motor completely. But, they (for obvious reasons) won't put that in writing. All that aside - did you have any issues at all with the Carbahn Tune? I want to pull the trigger. Especially for the additional Exhaust map. I understand that ALL Tunes (with the exception of MPPSK) puts my CPO at risk. But, I wanted to hear from everyone else. This is a light tune (maybe 47 hp). I really want it for the exhaust map. Quote:
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06-24-2023, 01:26 PM | #34 |
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A few general thoughts:
1. I had an issue with my tune and the DME had to be refreshed. My BMW dealer pulled the DME, FedEx'd it to Carbahn (who reflashed it) and reshipped it to my dealer, who reinstalled the DME. All at Carbahn's expense. The point is that their warranty is legit. 2. I had a LOT of trouble with this tune with a MT-- the clutch became VERY sensitive (think on/off switch) and could only be used in Efficient mode. Sport and Sport+ became unusable. This may or may not be an issue with non-MT cars. Personally, I think the turbo spool didn't take into account the clutch, so the tune dumps too much power as you're putting out the clutch-- but that's a personal guess. 3. It's a fun hooligan tune and is a beast on the street. BUT-- I didn't like it much on the track. And the longer I had it, the less I liked it on the street (mostly due to the MT issues stated above), so I detuned the car back to stock last winter. I'm currently considering a tune from Bend Calibration-- the only reason I haven't done so yet is logistics-- I have to pull the DME, ship it to Chicago to have it cracked, reinstall the DME, then tune with Bend (and I don't own a Windows laptop). That's probably a fall project due to my lack of free time to get it sorted. I'm looking for a "CS+" tune-- not interested in massive numbers, just want to have something with a little better umph that fixes BMW's "detune" of the M2C software compared to the M3/M4. Overall? At the time (2020), Carbahn was the way to go. Now, however, I think there may be other options that fit my needs better. If you have specific questions, feel free to PM me. R.
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06-25-2023, 09:44 PM | #35 | |
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06-26-2023, 06:01 AM | #36 |
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I would like someone to chime in here who has had this tune on a DCT to compare drivability if possible.
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11-24-2023, 12:31 AM | #37 | |
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11-24-2023, 08:54 AM | #38 | |
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After much research, I'll be going with Bend Calibration. I'll have to have the DME unlocked, and honestly? I've had bigger fish to fry (like finding out by accident that I was going to be dead in about a year and subsequently getting my flight medical yanked) so the car just hasn't been a priority-- I'll get to it, but probably not until the spring. I'll be looking to get essentially a "CS+" tune-- something fun, but within the bounds of the stock motor without having to play with injectors, fuel pumps, etc. I just would like something a little perkier and to unlock the hp that BMW took away with the Comp's detune. Bend seems to have exactly what I want. On the plus side, I'm all better now, but have to do a bunch of testing starting this week (nuclear medicine stress test, yet *another* angiogram and a comprehensive physical by a cardiologist) and then submit everything to the FAA-- that'll start the process to get me back in the jet (hopefully) in about 6 months from now. R.
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12-30-2023, 02:05 PM | #41 |
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Yes please, thanks...
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02-25-2024, 12:39 PM | #42 |
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Any update here?
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03-04-2024, 06:00 PM | #43 |
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Still very easy to street drive. There is definitely more torque down low but it’s still a very smooth ride and the power is much more linear than the stock tune. Car is making about 21.5 psi of boost. And second gear the car can still put down the power with just a little bit of haising the tires with traction fully off. (I’m running stock size tires (Michelin pilot sport 4S). The power seems to come on more in the higher gears.
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