04-06-2020, 10:46 PM | #1 |
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M2 CS tune?
So with the new CS on the horizon, and the fact that its nothing more than the same car just with loads more CF and a more aggressive tune...Is being ableto tune your M2 C with the CS tune something that can be done...and if the BMW dealership were to see the tune...could they deny warranty?
This is more out of curiosity than an actual plan for myself. However since AFAIK everything in the CS (engine wise) is the exact same as the M2C, having the CS tune shouldnt affect warranty...or am i wrong? |
04-07-2020, 01:17 AM | #2 |
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Yes, you can flash the car with a CS tune
But if not mistaken the M2 CS uses the same HP as the M3/M4 ZCP and then you have the M3/M4 CS at 460. I flashed to the CS tune that's based on the M3/M4 and it took it to another level. Warranty wise, BMW can deny if they see that you have tempered with the car. Don't think it matters if you use CS/GTS or stage 2 map on your engine. It's not what they intended for the M2 comp |
04-07-2020, 01:49 AM | #3 | |
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04-07-2020, 04:11 AM | #4 |
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The Bosch MEVD17.2.G ECU used in the M2 is pretty sophisticated and when flashed with another program, even if it's done by a dealer for standard repairs, there is incremental number that increases and is saved, within the computers reserved EEPROM, i.e. permanent memory. Tuners refer to this as a "flash counter."
All a BMW claims rep has to do is refer to that number and extrapolate, as confirmation that the vehicle's software was rewritten, then they'll refer to the boost logs, timing, AFR and measure them against the set stock variances, as conformation of their suspicion. They will allow for some fluctuations in the readings but if they see a major spiked in variations, it will be noted and possibly be use as evidence of tampering, thus, denying any hypothetical warranty claim. Also, the ECU itself, if it's set programming determines something is out of bounds, for a reasonable period of time, like let's say the boost pressure and AFR abnormally spikes, from the stock parameters, it will assume the original programing was changed and record a tamped code 201101 DME: Protection against tampering: Program or data manipulation detected. The fact is, the CS tune is mild and probably is safe but you have to circumvent the vehicle's software firewall to install it, which will leave breadcrumbs, making you vulnerable to warranty claim denial. It's kind of a quagmire but it's the risk you take for more power. Now, if you don't care about the warranty coverage and just want to a tune; it's your car, you can do whatever you want to it but that also means you disclaim BMW from a potential warranty issue. https://f80.bimmerpost.com/forums/sh....php?t=1318465 |
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04-07-2020, 10:24 AM | #6 |
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I just don't see the trade off. To lose the warranty on a new $60K+ car for a few HP? I mean, if let's say you blow your motor, somehow, someway, that's $25K+ repair job. Even if you don't blow the motor but screw something up, you're now making payments (i'm assuming here, so really maybe not), on top of repair bills, on your brand new car.
If you're going to go balls out, then get mod it up crazy with big power and enjoy your beast not caring if it blows or not.
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04-07-2020, 12:00 PM | #7 | |
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It sounds like they would regardless if the tune itself was just a stock tune from a car with identical hardware. Its a little disappointing, as i feel like BMW should allow people to flash the CS tune into a Competition model, however they probably want to maintain the CS' exclusivity. Again, tough question since this doesnt really happen with other car manufactures. The only other car i can think of this being a question is the Veloster N. There are actually 2 versions of the Veloster N. Theres the one we see everyone talk about online, and rated at like 275ish HP. But then theres the exact same car(also called the N) with 250ish HP. Exact same engine, exact same configuration, all it is, is just a difference in the tune. I'm curious if other Veloster N owners are asking the same question. |
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04-07-2020, 12:01 PM | #8 | |
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04-07-2020, 12:02 PM | #9 |
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Again for clarity, i dont actually plan on tuning my car. 405hp honestly is more than enough for me. The fastest car i had up to this point was my Supercharged BRZ making 240hp to the wheels and i thought that thing was quick as hell. THis is just a whole different level of speed.
This was more an exercise in curiosity. |
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04-07-2020, 01:35 PM | #10 |
this is the way
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I'd do it if it were my car, but that's because I am very comfortable with my dealership and have a good relationship with them. Also, they'd have to really prove you had a tune by showing multiple flashes. But, it's probably good insurance not to tune your car until it's been flashed for some other reason by the dealership, such as a recall or to fix an issue. This at least gives you plausible deniability. When they flash your car there are many dependencies that also need to be flashed. This is why sometimes it can take a few minutes while other times it can take several hours. Their systems don't always succeed and sometimes they have to start over, hence the count goes up. In the end it's up to you and your comfort level if you want to do it now or wait until the car is out of warranty.
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04-07-2020, 01:40 PM | #11 |
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Yeah if i ever plan on tuning this car i might just talk to them about the possibility of a CS tune. I dont really see the need to be above 400 whp at the most with this car since i probably dont even really use even close to that on the road.
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04-07-2020, 10:43 PM | #12 | |
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No one is going to read your ECU dump and say "wow, they were only running a CS tune. Normally we deny warranty on tuned cars but I'll allow this". |
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04-07-2020, 11:45 PM | #13 | ||||
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Exactly. They don't pull the car into the shop, hook up to it and it say M2CS tune" lol. You give a business a chance to save 20k+ they'll take that the majority of the time.
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04-08-2020, 05:43 AM | #14 | |
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I really doubt they're just going to copy and paste the M3/M4 ZCP parameters on the M2CS. I'm waiting for an authentic M2CS software, there certainly will be differences |
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04-08-2020, 07:36 AM | #15 | ||
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Same engine, same cooling etc etc. choose if you want to go standard, cs, gts, stage 1 or stage 2. |
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04-08-2020, 08:05 PM | #17 | |||
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04-08-2020, 08:30 PM | #18 | |
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04-08-2020, 08:41 PM | #19 | ||
Luxury at the redline :)
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So all a BMW expert has to do is testified that their was an electronic trail of the vehicle's software being tampered with, add some meaningless but colorful diagrams and its case closed. You're dead in the water if you believe you'll win a case against a conglomerate, unless you have some irrefutable evidence of a tort against you. |
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04-08-2020, 08:46 PM | #20 | |
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04-08-2020, 08:49 PM | #21 |
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Where will you get this "authentic" M2CS software? I'm under the impression the best you can do is choose a "CS" labeled tune from a 3rd party (BM3, BPM, take your pick). That's not necessarily authentic. For all we know, they just make a map that has comparable output as the CS, or it is their approximation of BMW's CS map. At that point, it really doesn't matter if you wait for some new map to come out, or if you just take one of the choices available today. Let's not confuse a 3rd party "CS" map with authentic BMW software.
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04-08-2020, 08:58 PM | #22 | ||
Luxury at the redline :)
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Better people have tired to prove an auto manufacture wrong and have failed (see below) but if you can cite some evidence of anyone succeeding, please enlighten me. . |
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