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Old 17th May 2006, 17:35   #1
w8pmc
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ECU remap by DMS

I know i can't swear on here so i'll just say F*****G HELL!!!!!!.

I'm certainly no M5 expert having only had the car for 5 days but i've just had DMS apply their M5 re-map to my car & it's now possibly the most bonkers car on the planet (exluding other DMS M5's of course).

This re-map has been written about in many UK Motoring Mags (very rare for the UK motoring press to show even a fleating interest in modifications) & being raved about & it's no wonder, the car has been totally transformed.

Given my limited knowledge & experience of M5's i'll not comment on the possible advantages, just those i've experienced over the 40mile drive i've just returned homw from & that started the minute James from DMS had finished on my drive.

The re-map is applied to both P400 & P500 modes & increases the torque by about 60nm in gears 3 through 7 again in both gearbox modes (1st & 2nd are locked down by BMW) & of course it increases overall torque by 60nm as well as a power hike to 448BHP & 538BHP respectivley.

It actually feels that P400 is very close to how P500 felt & P500 now feels mental fast. The gear changes are a little more crisp in the higher settings & actually a little softer in the lower settings. The mapping alters the gearing behavior a touch just smoothing out those tiny little rough spots.

No idea if the economy has improved as i was driving a little quickly but DMS reckon i'll get an extra 2-3mpg across the board.

I've used DMS before on my 535d M-Sport & could not recommend them highly enough before, but needless to say that feeling continues & anyone that fancies that little bit extra, it's well worth it. I believe they now provide a service in the US & i know DMS in the UK have travelled to Vegas a couple of times to get information on the US M5's so they can make one available over their.

As per my initial report, i'll post a more detailed report when i get back from Nurburgring on the 29th May.
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Old 17th May 2006, 18:23   #2
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Did they also change the SMG program or just the ECU?

Given that you've only owned the M5 for 5 days, it is still in its break-in period and still has the break-in oil in it, it is impossible to make any real judgments on the mod. However, I am skeptical of the power increase claims. You can make it "feel" very different if all you do is change the accelerator-press to throttle mapping without changing the torque and power of the motor.

Let us know what it feels like relative to a stock M5 after 3000 miles. It would be great if you did an indepedent dyno at that point.

Tom
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Old 17th May 2006, 18:43   #3
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I'm really interested in getting this done. Just concerned about the re-map issue. I don't really buy the "quiet word with the service manager" approach. If the car needs a software update then it'll have one and that could make the DMS map very expensive.
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Old 17th May 2006, 18:56   #4
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Quote:
Originally Posted by bernhtp
Did they also change the SMG program or just the ECU?

Given that you've only owned the M5 for 5 days, it is still in its break-in period and still has the break-in oil in it, it is impossible to make any real judgments on the mod. However, I am skeptical of the power increase claims. You can make it "feel" very different if all you do is change the accelerator-press to throttle mapping without changing the torque and power of the motor.

Let us know what it feels like relative to a stock M5 after 3000 miles. It would be great if you did an indepedent dyno at that point.

Tom
My car was not brand new & has covered 8000 miles so no break-in period for me (i'd not be stupid enough to do this to a brand new car).

No idea why you feel the need to be sceptical, it's a proven increase (end of). The re-map that DMS use on M5's is installed on the owner of DMS's M5 & has been applied to quite a few E60 M5's all over the world. They use the exact same re-map on all the M5's they've done & many have been dynoed at just under 550BHP so mine will be no different unless mine was up/down on power from brand new which i don't think it was.

The SMG control unit is also altered slightly as i said initially, as DMS apply the additional torque specifically to gears 3 through 7 (1st & 2nd are locked down by BMW) in both S & D modes & in both P400 & P500. The M5 work takes twice as long as regular E60's given the extra work involved with the seperate settings relative to gearbox modes & power modes.

I will be getting her on a dyno during the Summer, just not decided exactly where & when.

Last edited by w8pmc; 17th May 2006 at 18:56.
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Old 17th May 2006, 19:03   #5
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Quote:
Originally Posted by Spie
I'm really interested in getting this done. Just concerned about the re-map issue. I don't really buy the "quiet word with the service manager" approach. If the car needs a software update then it'll have one and that could make the DMS map very expensive.
That's the wonderful thing, it's free re-maps for as long as you own the car (within reason). If you have any work done on your car by BMW that results in the DMS mapping being removed, DMS will re re-map the car FOC.

I had this happend to me 535d & just as they state within 5 days of getting my car back they re-applied the mapping FOC.

As for the mapping being wiped, BMW would have to be doing some fairly heavy duty work to wipe the engine or gearbox ecu, most software requirements can be dealt with by BMW via fairly simple programming & a full ecu wipe is not required. Bear in mind the M5 has many many ecu's & the DMS re-map is only applied to the engine & gearbox ecu.

As for detectable, to date & to DMS knowledge no BMW dealer has yet found the mapping, as the worst they can do is wipe the map, their is no BMW workshop system that can detect the map & no signature of any desription. It is basically undetectable & given their are not thousands of M5's out their, a technician would struggle to really notice that one M5 was that much quicker than another, as i'm sure they don't drive that many.

As stated above, my engine ecu got wiped & the DMS mapping removed as a result & the BMW dealer concerned did not know the car had been re-mapped & the overall gains on that car were far more significant against stock (60BHP & 100nm torque).
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Old 17th May 2006, 19:56   #6
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Quote:
Originally Posted by bernhtp
Did they also change the SMG program or just the ECU?

Given that you've only owned the M5 for 5 days, it is still in its break-in period and still has the break-in oil in it, it is impossible to make any real judgments on the mod. However, I am skeptical of the power increase claims. You can make it "feel" very different if all you do is change the accelerator-press to throttle mapping without changing the torque and power of the motor.

Let us know what it feels like relative to a stock M5 after 3000 miles. It would be great if you did an indepedent dyno at that point.

Tom
Tom
I believe EVO had a quick test of a DMS modded M5 and were extremely impressed with the results, especially the increased mid-range torque which they described as transforming the car if I remember correctly. Stated it was so much better in the mid-rev range to drive, and that economy was better since the increased torque meant one could drive in a higher gear at lower rpm's than stock for the same performance level. DMS are highly regarded in the UK
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Old 17th May 2006, 20:15   #7
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+60nm and +31hp is a big increase in both, and larger than even claimed by other tuners such as AA (not counting the carbon filter removal, of course). I also admit to a more general skepticism of tuners and their claims. Maybe that's because Hennessey operate(d) in my area.

I would love to see a before and after dyno along with the cost and availability for US owners.

Tom
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Old 17th May 2006, 20:52   #8
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Let's see the dyno charts. So far, the best I've seen is a 13 rwhp increase using AA software. AA is also very highly regarded here in the US. Frankly, I don't believe you're getting a true 38 HP increase with just a remap. If so, they're getting three times what AA gets, and I'd have to ask why didn't AA figure this out?

I'll be happy to be proven wrong - if so, they've done an incredible job.
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Old 17th May 2006, 21:14   #9
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Quote:
Originally Posted by w8pmc
I know i can't swear on here so i'll just say F*****G HELL!!!!!!.

I'm certainly no M5 expert having only had the car for 5 days but i've just had DMS apply their M5 re-map to my car & it's now possibly the most bonkers car on the planet (exluding other DMS M5's of course).

This re-map has been written about in many UK Motoring Mags (very rare for the UK motoring press to show even a fleating interest in modifications) & being raved about & it's no wonder, the car has been totally transformed.

Given my limited knowledge & experience of M5's i'll not comment on the possible advantages, just those i've experienced over the 40mile drive i've just returned homw from & that started the minute James from DMS had finished on my drive.

The re-map is applied to both P400 & P500 modes & increases the torque by about 60nm in gears 3 through 7 again in both gearbox modes (1st & 2nd are locked down by BMW) & of course it increases overall torque by 60nm as well as a power hike to 448BHP & 538BHP respectivley.

It actually feels that P400 is very close to how P500 felt & P500 now feels mental fast. The gear changes are a little more crisp in the higher settings & actually a little softer in the lower settings. The mapping alters the gearing behavior a touch just smoothing out those tiny little rough spots.

No idea if the economy has improved as i was driving a little quickly but DMS reckon i'll get an extra 2-3mpg across the board.

I've used DMS before on my 535d M-Sport & could not recommend them highly enough before, but needless to say that feeling continues & anyone that fancies that little bit extra, it's well worth it. I believe they now provide a service in the US & i know DMS in the UK have travelled to Vegas a couple of times to get information on the US M5's so they can make one available over their.

As per my initial report, i'll post a more detailed report when i get back from Nurburgring on the 29th May.
A high quality driving school will improve the performance of you M5 much more than the few BHP you get from a remapping...
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Old 17th May 2006, 21:19   #10
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Quote:
Originally Posted by ParkerF
A high quality driving school will improve the performance of you M5 much more than the few BHP you get from a remapping...
These are, IMO, very wise words. Now where is the thumbsup smiley (could not find it in the smileys list).

Last edited by Habib_2; 17th May 2006 at 21:20.
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