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BMW Diesel Owners / Enthusiasts
Do you own a diesel powered BMW? Maybe a 335d or a BMW x35d? Come and talk about what makes your car great!

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  #301  
Old 07-11-2012, 10:57 AM
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Axel61 Axel61 is offline
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my radio settings on FM where lost but the only am station was left untouched, the car seems like it shifts better thats about what I have felt on it, mileage wise I have yet to see what transpires. As far as the RENNtech flash I just have to do a dyno run and see
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  #302  
Old 07-20-2012, 06:57 AM
efhanover75 efhanover75 is offline
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Here is an interesting question:

I exported my BMW 335d (11/2009 build) to Europe in June 2011 (my job transferred me here). The car drives great, but I see the recall notice for US 335d's. My SES light has come on and gone off 2 times in the past 12 months. I am interested to see if anyone can shed some light on what I do for this recall when my car is in Europe? I can always take it to the dealer and see what they think, but they don't have the recall for 335d's in Europe, correct?
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  #303  
Old 07-20-2012, 04:51 PM
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Axel61 Axel61 is offline
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Ok amigos i did the dyno run and got only 253 whp REENtech here i come!!!!

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  #304  
Old 07-20-2012, 05:45 PM
Snipe656 Snipe656 is offline
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Quote:
Originally Posted by Axel61 View Post
Ok amigos i did the dyno run and got only 253 whp REENtech here i come!!!!

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I am just curious here, you really could not tell the giant drop in power? I have been in a JBD car and it seemed drastically different than my car so I'd just assumed Renntech is the same.
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  #305  
Old 07-20-2012, 06:20 PM
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bayoucity bayoucity is offline
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Quote:
Originally Posted by Axel61 View Post
Ok amigos i did the dyno run and got only 253 whp REENtech here i come!!!!

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Amigo, la traffic in San Juan is painful. Where you plan on using 400 hp? Fajardo? Lares?
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  #306  
Old 07-20-2012, 09:25 PM
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Axel61 Axel61 is offline
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Snipe i had the egr replaced plus bmw flash i lost somewhat 50 whp in the transition,last time i dynoed w RENNtech flash i posted 300 whp and i had not disconnected the DSC!! @bayoucity we run at the ramey base the 1/2 mile,i clocked at 129.68,no time slip just flat out run

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  #307  
Old 07-20-2012, 09:27 PM
Snipe656 Snipe656 is offline
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Quote:
Originally Posted by Axel61 View Post
Snipe i had the egr replaced plus bmw flash i lost somewhat 50 whp in the transition,last time i dynoed w RENNtech flash i posted 300 whp and i had not disconnected the DSC!! @bayoucity we run at the ramey base the 1/2 mile,i clocked at 129.68,no time slip just flat out run

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Well, since BMW flashed the computer then I'd thought it would be obvious that you'd lost the Renntech tune. I'd also thought your butt dyno would have noticed it within about 100 yards of leaving the dealership.
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  #308  
Old 07-21-2012, 08:04 AM
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Axel61 Axel61 is offline
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I did noticed some changes but the car responded ok n smooth,the only way was to dyno,the origi.al dyno w/o RENNTech was 230 whp, w RENNTech 300 whp, now w the BMW egr and flash 253 whp a loss of 47 whp of the RENNtech 70 whp gain!!

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  #309  
Old 07-21-2012, 08:06 AM
Snipe656 Snipe656 is offline
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Makes me wonder how the power comes on with the Renntech v. the JDB(?) for more normal driving conditions, meaning not WOT but with some aggression.
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  #310  
Old 07-21-2012, 08:47 AM
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Axel61 Axel61 is offline
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Honestly dont know im pretty sure JB is good but i went the RENNtech route from previous experience

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  #311  
Old 07-23-2012, 05:58 AM
KeithS KeithS is offline
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Looks like no one has recieved any kind of answer on the MPG drop after the recall. I just had the opportunity to repeat a long trip I take from time to time. Without question the MPG has dropped. Best I can tell about 1.5MPG on highway, 2.5 MPG average has been lost. This is taking green in the wrong direction.

Before I was easily able to crack 40 MPG highway, did 42 once with the AC off. This trip had trouble making 39. Also before my average around town MPG was always 30 something on the display, now it's rarely over 30.

Hopefully they will get enough complaints to revisit the ECU program changes and have another update soon.
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  #312  
Old 07-23-2012, 06:45 AM
SpeedyD SpeedyD is offline
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Quote:
Originally Posted by KeithS View Post
Looks like no one has recieved any kind of answer on the MPG drop after the recall. I just had the opportunity to repeat a long trip I take from time to time. Without question the MPG has dropped. Best I can tell about 1.5MPG on highway, 2.5 MPG average has been lost. This is taking green in the wrong direction.

Before I was easily able to crack 40 MPG highway, did 42 once with the AC off. This trip had trouble making 39. Also before my average around town MPG was always 30 something on the display, now it's rarely over 30.

Hopefully they will get enough complaints to revisit the ECU program changes and have another update soon.
I haven't seen any noticeable drop in MPG since the fix myself. 30 MPG around town? I must be driving this thing too aggressively...
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  #313  
Old 07-23-2012, 06:51 AM
Snipe656 Snipe656 is offline
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I have not driven enough to definitely say if anything has changed. It really all seems to be the normal range with occasional spikes up or down. I am actually back at the dealer now because of this recall but because my tailpipes are way off. I think they bent a pipe when replacing the cat, they say they did not even though I have pictures clearly showing mine different than someone else's. They are getting the exhaust to sit properly though, so guess at the end of the day who cares on the cause so long as the resolution is satisfactory.
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  #314  
Old 07-23-2012, 07:20 PM
831Doug 831Doug is offline
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Quote:
Originally Posted by KeithS View Post
Looks like no one has recieved any kind of answer on the MPG drop after the recall. I just had the opportunity to repeat a long trip I take from time to time. Without question the MPG has dropped. Best I can tell about 1.5MPG on highway, 2.5 MPG average has been lost. This is taking green in the wrong direction.

Before I was easily able to crack 40 MPG highway, did 42 once with the AC off. This trip had trouble making 39. Also before my average around town MPG was always 30 something on the display, now it's rarely over 30.

Hopefully they will get enough complaints to revisit the ECU program changes and have another update soon.
Ditto with me. Overall gas mileage is lower. City mileage seems the same, but freeway mileage is about 2 MPG less. Performance seems good, but the shifting in noticeably different.

Hopefully, they'll re-map and find some happy medium.
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  #315  
Old 07-23-2012, 07:26 PM
Snipe656 Snipe656 is offline
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Mine seems to shift the same but if the computer is telling the truth it is getting around 25mpg for this tank as opposed to the norm which is usually around 29. I still think not enough time has gone by though for me to safely judge the fuel economy on if it has changed or not. At least now my tailpipes look correct ...
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  #316  
Old 07-24-2012, 03:11 AM
oldsankey oldsankey is offline
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Latest emissions recall and lower mileage-Inquiry POC

I recently contacted BMW NA regarding my drop in fuel efficiency follwoing the most recent "voluntary" emissions recall. Unfortuantely, my local dealership would not address the issue, or even offer any reasonable response when I contacted in the past. BMW NA customer relations has assigned an individual to research my inquiry and I'm hoping others will also reach out and share their respective issue as well. POC is Joe @ 1-800-831-1117 ext 7931. Sending an email works as well: customerrelations@bmwusa.com Hopefully, if enough people share the same result after this install, BMW may actually address and correct this issue. It's been over two months since my recall work was completed (EGR replacement and ECU update) and no matter how conservative I try to drive, I can't match the numbers I was posting prior to the recall work. I drive ~ 140 miles per/day to work roundtrip, with 90% being highway miles and it's the same route every day... Taking into consideration all of the variables that affect mileage consumption: temps, traffic, aggresiveness, additional PAX weight, etc, without a question my fuel efficiency is consistenyly 4-6 MPG less post recall work.
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  #317  
Old 07-24-2012, 04:02 AM
KeithS KeithS is offline
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I tried sending an eMail to customer relations. The response was they cannot help me, work through the dealer. Joe will proably be getting a lot of calls now!
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  #318  
Old 07-24-2012, 05:14 AM
Snipe656 Snipe656 is offline
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Originally Posted by KeithS View Post
I tried sending an eMail to customer relations. The response was they cannot help me, work through the dealer. Joe will proably be getting a lot of calls now!
That is because BMWNA is a joke.
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  #319  
Old 07-25-2012, 12:08 PM
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JŠnos JŠnos is offline
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Quote:
Originally Posted by Snipe656 View Post
Mine seems to shift the same but if the computer is telling the truth it is getting around 25mpg for this tank as opposed to the norm which is usually around 29. I still think not enough time has gone by though for me to safely judge the fuel economy on if it has changed or not. At least now my tailpipes look correct ...
Wow, that entire post nearly duplicates my situation.

My displayed MPG average is usually 28/29 and now has been hovering around 23/24 (with some really concerning dips down to as low as 18MPG since the recall was completed). I still want to wait for another tank to pass judgment on what exactly is happening. The shift points don't feel all that different to me; the only real difference was that I noticed some stronger than usual odors from the first few DPF burnoffs.

The other similarity: at the last service I also had my tailpipes adjusted so they are now level.

Last edited by JŠnos; 07-25-2012 at 12:09 PM.
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  #320  
Old 07-25-2012, 12:12 PM
Snipe656 Snipe656 is offline
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Originally Posted by JŠnos View Post

The other similarity: at the last service I also had my tailpipes adjusted so they are now level.
Did you have your cat replaced under the recall? We think that is what caused what is attached. Things are fine now, not sure if 100% as it used to be but would take one sharp eye to notice if so.

I did notice what seemed like a lot of burn offs through out the first tank of fuel after the recall.
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  #321  
Old 07-25-2012, 12:22 PM
bballfreak bballfreak is offline
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Regarding 2009 bmw 335 diesel

I have the same problem with my 2009 335d mog
since the last since the last recall.
Dealer programmed it again and slight difference.
The most i get on hwy is 31-32 mpg vs 34-37 before under
Under same driving conditions.
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  #322  
Old 07-25-2012, 12:23 PM
clippernation clippernation is offline
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Did any of you guys notice a new lag with your radio after starting up your car? For me, about 50% of the time it takes 10-15 seconds after I start up my car for my radio to turn on, whereas before the update it was instantaneous. It's odd and annoying, but at least it still works.
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  #323  
Old 07-25-2012, 12:25 PM
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JŠnos JŠnos is offline
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Quote:
Originally Posted by Snipe656 View Post
Did you have your cat replaced under the recall?
This is what was replaced:

EGR valve
Hex screw w/coll (4)
Rubber seal
Collar nut (2)
O-ring
Gasket (2)
Muffler clamp
Remanufactured exhaust pipe C
Clamping bush (2)
ISA screw w/washer (2)
Hex nut w/flange
Metering unit
Mixer

I wondered why my recall work seemed to require a bit more than what others have posted.

The left tailpipe was always a bit low but was even lower after the transmission was replaced (several months ago). I'm glad they fixed the tailpipe (and transmission!), no charge.

My refurbed transmission has been good so far (knock on wood).

Last edited by JŠnos; 07-25-2012 at 12:26 PM.
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  #324  
Old 07-25-2012, 12:31 PM
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JŠnos JŠnos is offline
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Quote:
Originally Posted by clippernation View Post
Did any of you guys notice a new lag with your radio after starting up your car? For me, about 50% of the time it takes 10-15 seconds after I start up my car for my radio to turn on, whereas before the update it was instantaneous. It's odd and annoying, but at least it still works.
No, I don't experience that. Hmm, none of my presets were wiped out with the reprogramming, unlike what a lot of others experienced. Did yours?

Seems like I got a lot more parts replaced, less invasive programming (if that is even possible!) and no gremlins other than the lowered MPG. Weird.

Last edited by JŠnos; 07-25-2012 at 12:36 PM.
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  #325  
Old 07-25-2012, 12:32 PM
Snipe656 Snipe656 is offline
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Quote:
Originally Posted by JŠnos View Post
This is what was replaced:

EGR valve
Hex screw w/coll (4)
Rubber seal
Collar nut (2)
O-ring
Gasket (2)
Muffler clamp
Remanufactured exhaust pipe C
Clamping bush (2)
ISA screw w/washer (2)
Hex nut w/flange
Metering unit
Mixer

I wondered why my recall work seemed to require a bit more than what others have posted.
My paper work had every bit of that many parts on it. It had a big long list of parts that I never bothered to try and type all up. I'd imagine those of use with early enough 2009s had similar parts replaced.
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