08-15-2018, 04:14 AM | #23 | |
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This is 100% why the axle broke ,stock or tuned it does not matter. You launch you certainly risk doing damage.
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08-15-2018, 04:49 AM | #24 | |
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When the car is trying to launch, but you're not really in Launch Mode (like what I did), it spins the rear tires, while braking the front tires. This was fine when the car was stock, the rear tires would break loose, while the front brakes would hold, then you let go and fire forward. The new variable in my modified car (the reason I think I broke my rear axle) is the new tires. The OEM tires would break loose, but the new 265 Michellin PS4S tires refused to break loose. Which is understandable, since my levels of grip after swapping to these tires has dramatically increased. So this time around, when I screwed up launch control yet again, the rears didn't break loose, causing a huge amount of stress on the rear axle, even the new added power didn't matter, then blew the rear axle. I actually heard the rears try to spin and break traction, but they wouldn't spin. Remember, this all happened within 2-4 seconds. I believe the added grip of the rear tires broke my axle (and of course my idiocy and ignorance of properly using the launch control feature), not my added power or torque. I would find it hard to believe I snapped the rear axle by only adding 100 horsepower or 100 ft lbs of torque... Btw, after all the mods I had applied to the car at one time, the most noticeable modification wasn't the additional power, it was the grip from the tires. It just proves how big of an improvement tires can make... |
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08-15-2018, 05:07 AM | #25 | |
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I'm sorry to say, NO! I wouldn't, I have to see what the car can do if it's slightly opened up and unlocked. I would however of made some changes to the mods I bought for the car. For example, after driving the car on the Michellin PS4S's and the crappy OEM Bridgestone Potenza S001, the Bridgestone tires rode too harsh for my liking because of the runflat, but truth be told, the car was more fun to drive on the Bridgestones. In hindsight, I would of bought a less grippy tire than the Michellins. I have a 718 Cayman that has tons of grip, the Beemer was more fun with the tail hanging out. Of course I didn't give this response to my wife Sidenote: BMW didn't discount anything. It was my relationship with the Service Advisor and all the previous business I did with them in the past that got me that killer discount. Btw, I didn't take the discount... Stay tuned! |
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08-15-2018, 06:34 AM | #26 | |
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He said that a downpipe, especially if catted, is unlikely to cause any problems with my warranty. He did state that the fmic is questionable, even if it is better for the car, and I don't remember saying anything positive or negative about the chargepipes. He did advise that IF I did choose to buy a tune, to consider buying a Dinan piggyback or an actual ECU tune by a reputable company, and not a piggyback (think JB4). The only piggyback he recommended was Dinan. After the broken axle and the warranty claim denial, he did try and explain what they saw and how it was flagged. Honestly speaking, I was so upset that we couldn't find a resolution (mind you, it's obviously my fault, but I'm still human and apt to getting upset), that I didn't even pay attention to his explanation. He is a good guy and trying to be helpful and give advice. He said the BMW rep advised for me to fix the axle on my dime and switch the car back to stock ECU to keep future warranty claims from being denied. That would lead me to believe that bolt-ons didn't bother the BMW field rep too much, since he didn't recommend the bolt-ons to be replaced with OEM parts. I had the car pulled from that BMW dealership today and taken elsewhere, so stay tuned for the fix. I will try and call him to get better clarification to how they want to see a stock ECU and what really set off the red flag when things calm down a bit. Of course I will do this for you guys here, as for me, it's a bit too late. I've already been tainted! I'm damaged goods! |
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08-15-2018, 06:47 AM | #27 | |
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08-15-2018, 11:59 AM | #29 | |
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08-15-2018, 02:40 PM | #30 | |
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But if you speak to the SA who you have a relationship with now under cooler circumstances and get him to explain exactly how they detected ECU tune, you would do a great service to others here. |
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08-15-2018, 03:10 PM | #31 | |
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08-19-2018, 04:44 AM | #32 |
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While I'm positive BMW can find out if you have a tune regardless of what you do to flash back to stock (lock DME), I bet it's far easier to figure it out if you don't lock. That's just an educated guess. The locking probably sets certain flags on the DME to a protected state which probably raises red flags if read by the dealership's computers. If locked, they probably have to do some investigation to whether or not your car was tuned or not.
The fact that you had a CP, FMIC, and downpipe are pretty much guarantees that you had a tune on your car. Also, for a $3100 warranty repair where they claim is often caused by tuning, I'm going to bet you would've been caught on this regardless. It might have taken longer, but they would have known. I'm not saying that you should deceive your dealership or SA, but I think it behooves anyone with a tune to try to return a car back to stock as much as possible and flash back to stock and LOCK the DME whenever they take their car in for major warranty service. There's just no reason NOT to. Even if your service adviser is cool, it gives THEM plausible deniability the less you tell him and the fewer facts he knows. Don't lie, but you don't have to tell them everything unless they ask, right? If they decide to cover it, great, if not, then like it's been said, you have to pay to play. |
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08-19-2018, 08:52 PM | #33 |
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Sorry to hear this but first time I hear this on a 335.
Your first mistake was not flashing back to stock and locking it at home! Your second mistake was flashing it at the dealership and not locking it. This is the MAIN and BIGGEST reason why BM3 has its advantage over every other tune out there. It will restore 100% to your OWN factory software. I, along many have gone to dealer for all types of non-tune related work or maintenance and the first rule of thumb is flash back to stock and lock it if you're 1 of those OBD unlock folks. Before February OBD Unlock came out everyone was bench flash and more ppl got flagged because some tunes would trigger "DME Tamper Code" a lot of ppl stopped going to dealer not to get flagged too. Long story short, I've done over 100 DIGs in my X4 M40i because AWD cars are meant to do this. I wouldn't buy a car that I'm going to be worried about driving it hard. There's a lot of ppl driving those MPS4S tires in RWD cars and loving it because of its grip. The axles issue was pre-mature issue and the extra power just made a weak component come out sooner than later.
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08-19-2018, 10:18 PM | #34 | |
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And ok, I guess I'll be the first one to inquire as to how replacing an axle that retails for a (stupid) $1159 ends up costing $3100 all in. It's a two hour job if the tech is hung over on a Monday morning.
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08-19-2018, 10:41 PM | #35 |
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Man threads like this make me concerned about playing with LC. There are a few checks before LC works and I've ran into this multiple times where i hammer the pedal hoping that LC activates and i end up snuffing the car.
I forget exactly what the checks were but I think it is something like the car has to travel at least 10 miles in the current drive cycle, be fully warmed up , and either dtc or sport plus Of course with xdrive the wheels don't break free so i always get a pit in my stomach when i fail to trigger thinking about the stress on all the components |
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08-20-2018, 03:31 AM | #36 |
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Update: I had my car pulled from BMW and taken to Porsche (My place of employment). I had the parts department find and order a used (20k miles) driver side rear axle, new gaskets, 2 undercarriage (Underhood shield) panels (unrelated to my axle, but it was falling apart, so I wanted it replaced. BMW wanted $340 for these 2 pieces, installed), and collar nut. I had our Porsche Master Tech install all the parts, and the Beemer is finally back on the road.
Here's the breakdown of the current cost: $400 in parts, used axle included $250 in labor for 5 hours (this included the 2 underhood shields and hardwired connection for my Valentine One and mirror mount install) $135 for Volvo S60 rental car while my car was at Porsche (3 days total) $80 to tow my car from BMW to Porsche $50 buying lunch for 2 people that helped make this happen = $915 total BMW's discounted price, including the 2 underhood shields was $2074 I'm obviously not stating that you can have the same work done for half the cost, like I did, but like most jobs (what we do for a living), we have perks. In my situation, my "perks" came in really handy! I brought the car back home that night, reinstalled my BM3 tune, and my car is running as strong as ever! I was very fortunate... Last edited by TEST DRYVER; 08-20-2018 at 03:39 AM.. |
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08-20-2018, 03:49 AM | #37 | |
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Output Shaft (rear axle) $1367.12 Collar Nut $8.54 Gasket Set $122.98 Underhood shield $207.89 Cover, bottom left (a smaller piece of the underhood shield) $42.78 $1749.31 in parts $1083.38 in labor $3043.27 total You're right as far as a BMW tech taking barely over 2 hours to replace the axle, but they get to charge the "book hours" for the labor, which if I remember correctly was 5.5 hours... |
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08-20-2018, 04:16 AM | #38 | |
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08-20-2018, 12:40 PM | #39 | |
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5 hours to remove one rear axle? In what freaking world? That can't be book time. If I had a lift and the BMW tool to pop the axle out of the diff, I could have an axle out in less than an hour including getting the car in the air.
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08-20-2018, 01:22 PM | #40 |
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VMR710 with spacers ? looks nice
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08-20-2018, 01:43 PM | #41 |
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LTG puts it at 2.2 for one side. They really wanted to stick it to you. Glad you were able to get it sorted at a much more reasonable price. I, thankfully, just had my rear axle replaced under warranty and it took them less than half a day from dropoff to repair and final RO write up to me picking up the car.
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08-20-2018, 01:54 PM | #42 |
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damn... you only paid 50$/hr for labor by a porsche tech?
talk about perks... i dont think you can get this price/hr from anywhere in regards to cars
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08-20-2018, 02:18 PM | #43 |
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$1400 for the part is also completely nuts. I know bimmer parts are all expensive and price gouged by default, but in the case of axles, pound for pound for what they are they're really pushing it. I used to get $60 replacement axles for the honda at autozone and snap them every few months carefree. They look kinda the same really .. should be close to $300 or so maybe. How do we get to 1400, do they have gold bearings inside...
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08-20-2018, 04:54 PM | #44 | |
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