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      07-30-2012, 09:39 PM   #23
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Originally Posted by Marwan1 View Post
OK, so what happens at the end of the lease; will you have to pay a fine or something?
Don't you just put it back to original?
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      07-30-2012, 10:03 PM   #24
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Don't you just put it back to original?
I guess in a way that's what I'm asking too, indirectly. Can the remaping process be reversed easily just before one returns the car back? The other question I have is about the warranty; doesn't remaping void it?
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      07-30-2012, 10:07 PM   #25
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As far as I knew they gave you a copy of the original firmware file, or they will remap it back to original as part of the service, they do here anyway?
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      07-31-2012, 12:56 AM   #26
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I sold both of my 3 series remaped, one by Mega-Speed other by GIAC still with some warranty left in both. I was fair and told the truth to the buyers. After taking a test drive both agreed on leaving it remaped. You could always revert back to stock at the tuner shop or at the dealer. I think the full soft update runs around $150 at my local BMW.

Being remaped and under warranty is no problem either. They will never know it's remapped unless you have a serious engine problem that requires true live data monitoring of your car. However it is a risk you take when you run a tune except for the Dinan.
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      07-31-2012, 03:49 PM   #27
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I sold both of my 3 series remaped, one by Mega-Speed other by GIAC still with some warranty left in both. I was fair and told the truth to the buyers. After taking a test drive both agreed on leaving it remaped. You could always revert back to stock at the tuner shop or at the dealer. I think the full soft update runs around $150 at my local BMW.

Being remaped and under warranty is no problem either. They will never know it's remapped unless you have a serious engine problem that requires true live data monitoring of your car. However it is a risk you take when you run a tune except for the Dinan.
So is your plan to revert back to stock before you return your leased X5?
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      07-31-2012, 04:52 PM   #28
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I usually buy out my cars after the lease end and sell them right after privately. Depending on if buyer wants it or not.
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      08-03-2012, 09:43 PM   #29
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Just picked up the car from the dealer. Oil change, brake job, alignment, some other little things and multiple test drives. Tech never noticed the car was remaped, no codes either. I did though put my old set of 20" 214 wheels in the trunk to not let the car rip so fast during the test drives.
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      08-04-2012, 01:33 PM   #30
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My x6 50d is on order did you compare it to a x6m on acceletation and lag?
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      08-04-2012, 02:19 PM   #31
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Wow man that's gonna be tough one to compare to. Maybe through first two gears then that's it... I've test driven the X5M several times and it's brutal even more when remaped. I don't think any D would stand a chance.
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      08-07-2012, 08:53 AM   #32
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I've been monitoring my consumption after the remap was done. Now through my 3rd. tank I can spot a slight increase in MPG US around 0.5-1 combined per tank.
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      08-07-2012, 10:22 AM   #33
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OK, I'm a complete nube when it comes to this remapping thing so please excuse the naive question/s...

So, if it is so "easy" to squeeze out more HP and torque while increasing mpg by simply changing the software controlling the engine, why doesn't BMW do it? Why do they program their engines to run at less than maximum achievable power and efficiency; is it to keep the engines running within a "safe" band of performance? If that's the case, does remapping mean that one is running the engine outside that safe performance band and therefore running the risk of damaging the engine? Thanks for any answer/explanation.
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      08-07-2012, 12:40 PM   #34
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There is this marketing thing... If BMW would squeeze every bit of performance out of this diesel M57 engine at the selling price it sold, there would be no place for other gas or diesel motors cutentely available in the lineup. One would never justify paing more for a V8 gas if I6 diesel would yield same output while returning much better MPG.

The remap does not hit the seealing of maximum engine capability, it runs within safe margins. All BMW turbocharged engines are limited by quite a bit from the factory, leaving a lot on the table for tuners.
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      08-07-2012, 01:09 PM   #35
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So, is similar remapping not available for engines other than the M57? In other words, couldn't BMW squeeze more performance out of all its engines?
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      08-07-2012, 03:14 PM   #36
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Quote:
Originally Posted by Marwan1
So, is similar remapping not available for engines other than the M57? In other words, couldn't BMW squeeze more performance out of all its engines?
Remaping available for almost all BMW modern engines not only for M57 diesel. Yes BMW can squeeze more power easily from their turboed motors without hitting the limits.
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      08-07-2012, 03:52 PM   #37
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Well then the argument that BMW does not squeeze more power from the M57 (or any other engine of theirs for that matter) so as not to disadvantage other BMW engines doesn't stand, since all turbocharged BMW engines (now the majority of their engines, I think) could be made to produce more power. I still don't understand why BMW would leave that to tuners when it can do it and effectively disadvantage other manufacturers' engine offerings (rather than other BMW engines). Unless other manufacturers can do the same and for some reason (similar or different than BMW's) have also chosen not too...
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      08-07-2012, 11:01 PM   #38
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Quote:
Originally Posted by Marwan1
Well then the argument that BMW does not squeeze more power from the M57 (or any other engine of theirs for that matter) so as not to disadvantage other BMW engines doesn't stand, since all turbocharged BMW engines (now the majority of their engines, I think) could be made to produce more power. I still don't understand why BMW would leave that to tuners when it can do it and effectively disadvantage other manufacturers' engine offerings (rather than other BMW engines). Unless other manufacturers can do the same and for some reason (similar or different than BMW's) have also chosen not too...
I believe that most modern FI motors can output more then the factory offering without hitting it's limits. I call it marketing solution and trying to prolong engine life. There is still a margin of risk present always when you're tuned. You gotta pay to play.
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      01-05-2014, 05:04 PM   #39
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Quote:
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Mega-Speed can tune virtually any model US or EU. When I had their N52 and N54 flashes they weren't listed on their website either. Mega-Speed is very popular in some EU countries. I'm in Canada btw so US car.

The US 35d reflash is amazing. I started to actually love how my truck drives, it reminds me of N54 335i now. I hated it before even with JBD at max setting. There was so much lag in low rpm and power would come on hard like from 0 to a 100 in a moment, not controllable.There is virtually no turbo lag now from the dig in both D and DS. Power is very smooth and strong all the way to 5000! And I think (not sure yet) there is a slight increase in MPG both city and hwy. The tach behaves more like gas now, just flies up there. V-max is removed to 280 kmh as well.

Regarding DPF and DEF removal, not sure if they'll would tackle BMW exhaust system. Would be hard to sell the truck after if need be.
I had many diesel domestic trucks in past 14 years, lately totaled my 2010 F-250 PowerStoke with no DPF/EGR After all that years decide to get smaller car with Diesel, end up buying '12 X5 35D (was always big fan of German engineering) I know how bad DPF is for diesel and i want to get rid off it ASAP. I want to know what you think of deleting DPF/EGR as well with tuning and which one will work and fit better??? Any Opinion help's. Na zdarov'e...
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      01-05-2014, 10:23 PM   #40
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Quote:
Originally Posted by vladkot1 View Post
I had many diesel domestic trucks in past 14 years, lately totaled my 2010 F-250 PowerStoke with no DPF/EGR After all that years decide to get smaller car with Diesel, end up buying '12 X5 35D (was always big fan of German engineering) I know how bad DPF is for diesel and i want to get rid off it ASAP. I want to know what you think of deleting DPF/EGR as well with tuning and which one will work and fit better??? Any Opinion help's. Na zdarov'e...
I think only 1-2 people have done it, I looked into it and I see no reason it can't be done however I have since bought an X5M and lost interest in modding the diesel any further it has a tune and that gave it a nice bump in performance.
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      01-06-2014, 12:42 PM   #41
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I know how bad DPF is for diesel and i want to get rid off it ASAP.
335ds have bigger problem with DPF and EGR than X5 35ds. Low pressure vs. high pressure setup. 335s have high pressure setup that reuses dirty gasses. 35d engines have low pressure setup; reuses cleaner gasses after OX catalyst and DPF.
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      01-06-2014, 02:08 PM   #42
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what you saying is just live dpf/egr alone and add tuner only. dose anyone try EcoTune with iFlash ?
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      01-08-2014, 09:15 PM   #43
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I would do both the tune and DPF/EGR. It might be worth a trip to Toronto one of these days.
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