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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications Dinan Stage 2 550i vs. 2012 M5
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      12-21-2011, 08:19 AM   #1
jnkirk1974
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Dinan Stage 2 550i vs. 2012 M5

Okay, this may have been answered before, but my simple Google search gave me nothing.

Obviously, the M5 is a completely different monster. I realize this. However, I would like to know which car is faster in straight-line performance.

The M5 has more 40+ horsepower. However, a Dinan Stage 2 550i has nearly 80 more torque.

On a track, it's a no-brainer. The M5 is a much better overall car. I'm only concerned with straight-line acceleration. This is America, right? We don't care about turns
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      12-21-2011, 08:30 AM   #2
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I hope to test this soon, after my Hartge ECU upgrade.

I feel confident given my 8spd sport ZF transmission I will pull away at some point between 0-150mph, we will see ...

Where is Dinans torque at, Hartge is 531 ft-lbs @ 2000 RPM! Thats a sneeze away from idle!!! Hartges also brings in 490hp at 5500rpm.
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      12-21-2011, 09:45 AM   #3
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Originally Posted by delvek View Post
Where is Dinans torque at, Hartge is 531 ft-lbs @ 2000 RPM! Thats a sneeze away from idle!!! Hartges also brings in 490hp at 5500rpm.
Dinan specs for the 550i are:
Peak HP 501 HP @ 5000 RPM
Peak Torque 580 FT-LBS @ 3500 RPM

To answer the OP's quesition, the M5 will be faster due to the DCT and launch control.
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      12-21-2011, 09:49 AM   #4
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Okay. Taking DCT and launch control out of it, which is faster between 30mph and 40mph?
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      12-21-2011, 09:56 AM   #5
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Originally Posted by jnkirk1974 View Post
Okay. Taking DCT and launch control out of it, which is faster between 30mph and 40mph?
DCT is the transmission. It will shift faster than the ZF 8 speed. A narrow band such as 30-40 won't see much speed differential though.
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      12-21-2011, 10:02 AM   #6
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I realize what DCT is. I was just grasping for straws to see if there was any scenario where the 550i would be faster. I was just being dumb......it's early in the morning.
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      12-21-2011, 12:55 PM   #7
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If you search you will find those with Dinan Stg2 that have taken their F10 to the track (including me) are generally trapping between 112-113. There is an article in the M5 section that C&D trapped 122 with the new M5. If those numbers are accurate, it will be no contest. I'd like to see those numbers repeated by drivers here in the States when the M5 is out next year though.

Launch control/DCT will make the car quicker, not necessarily faster...
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      12-21-2011, 02:44 PM   #8
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Im hoping to smoke the M5 from a standstill -> 50 mph.
And on wet or slippery roads ....... xDrive
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      12-21-2011, 03:33 PM   #9
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I am with you CID, only being a 550i I am more interested in rolling starts from 100kmh, it's where the I shines.
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      12-21-2011, 04:50 PM   #10
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I think the 550i Dinan will give the M5 some serious go from a rolling start. Question is how long.
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      12-21-2011, 04:58 PM   #11
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Well, I just called to schedule my Dinan Stage 2 Programming at Classic BMW in Plano. Provided that I don't run into any M5s in the near future, hopefully I'll be owning the road in my small town in Texas (or at the very least, most high school kids with Hondas). Just kidding......or am I? (sarcasm)
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      12-22-2011, 08:01 AM   #12
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I hope you are not showboating your 550 M-sport against teens in Hondas, ugh the thought. Next your going to tell me you have reserved parking in your trailer park.
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      12-22-2011, 08:39 AM   #13
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Yes, I do have a reserved spot in my trailer park.......right next to the ridiculously oversized 1980's satellite dish. No, I don't showboat. I was conceding defeat to the M5 by stating that I'll only be faster than the stupid ricer cars flying around my city. Thus, the reason for the (sarcasm) at the end of my last post.
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      12-22-2011, 08:43 AM   #14
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yea, I knew you were being sarcastic I just visualized the scene and couldnt resist.

ps. I heard you can get Russian channels on those satellites?
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      12-22-2011, 08:48 AM   #15
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I think you can pretty much get anything on those things....
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      12-24-2011, 12:47 PM   #16
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Okay, so comparing the 550i Dinan Stage 2 acceleration to.......

1) C63
2) 2010 M5
3) Other cars not mentioned

Thoughts? Where does the Dinan-tuned 550i stack up?
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      12-25-2011, 05:52 AM   #17
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      12-25-2011, 11:17 AM   #18
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I used to own a C63 and I think it was faster than my 550iX Dinan stage 2. However, it's difficult to tell because I am judging by seat of the pants feel and not timed runs. The sound of the C63 makes it feel faster, whereas the 550i is so quite and smooth. I think the 550 with the Dinan tune is deceptively fast.

I also had a GT-R prior to my 550 and it was, without any doubt, much quicker in every aspect.

Last edited by gray550; 12-25-2011 at 06:30 PM.
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      12-25-2011, 02:11 PM   #19
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Quote:
Originally Posted by gray550 View Post
I used to own a C63 and I think it was faster than my 550iX Dinan stage 2. However, it's difficult to tell because I am judging by seat of the pants feel and not timed runs. The sound of the C63 makes it feel faster, whereas the 550i is so quite and smooth. I think the 550 with the Dinan tune is deceptively fast.

I also had a GT-R prior to my 550 and it is, without any doubt, much quicker in every aspect.
The Eisenmann race exhaust certainly helps the BMW get some of the "AMG effect".
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      12-26-2011, 05:34 PM   #20
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Quote:
Originally Posted by jnkirk1974 View Post
The Eisenmann race exhaust certainly helps the BMW get some of the "AMG effect".
Maybe I did things backwards, purchased and installed ACScnitzer springs and exhaust and 6 months later Hartge ECU mod. I felt the 550 was too fast to be so quiet, I couldnt imagine have the mod without the exhaust.


Quote:
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I also had a GT-R prior to my 550 and it was, without any doubt, much quicker in every aspect.
GT-R, well, being mentioned in the same sentence as that rabid rice burner is an honor in itself!
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      12-27-2011, 11:19 AM   #21
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Okay, I'm in the stage 2 club as of this morning. Can't wait to feel it! About an hour to go.....
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      12-27-2011, 11:20 AM   #22
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For those that might possibly know......(forgive my ignorance) Does the tuning effect the tone of the car at all?
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