Hi all ~ BMW newbie here~

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Hi all ~ BMW newbie here~

Postby COOLGUY » Sat Dec 11, 2010 11:02 am

I just bought an E46 M3 (2005) and I want to know is there any shop in HK can tune the ECU to make the shift gear time shorter? Thanks :D
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Re: Hi all ~ BMW newbie here~

Postby Siukeung134 » Sat Dec 11, 2010 3:41 pm

Hello~~~~
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Re: Hi all ~ BMW newbie here~

Postby E36328 » Sat Dec 11, 2010 5:49 pm

SMG II is like that, put up with it :P
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Re: Hi all ~ BMW newbie here~

Postby digi » Sat Dec 11, 2010 6:43 pm

press the "SPORT" button or increase the the speed of change to max.

Else, drive it in manual mode and it will perform better. If u drive in "D" you will find in general it respond slower than a conventional autobox. My mrs asked me recently is our car SLOW becoz she say pickup is not as quick as the old autobox. kekeke. Drove home and I drive, she then said it does not change this quick when she drives. kakaka.

SMGII can be clunky and sluggish when taking it easy, comes alive when u go for it. :lol:
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Re: Hi all ~ BMW newbie here~

Postby COOLGUY » Mon Dec 13, 2010 10:03 am

I feel Really big difference between manual and "D" mode. I don't understand why BMW cannot make shorter gear shift time in "D" mode as "M" :cry:
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Re: Hi all ~ BMW newbie here~

Postby digi » Mon Dec 13, 2010 2:32 pm

I drive mine 98% of the time with SPORT on after the engine is warmed up. Even a mazda 121 can overtake me when I'm warming the engine. kakakaka.

My mrs hates it, hence the new one has to be some kind of dual clutch gearbox. She always make the car ride horse. :lol: :lol:
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Re: Hi all ~ BMW newbie here~

Postby COOLGUY » Mon Dec 13, 2010 6:11 pm

Digi, you are right, when the car is warming up, even k-car or taxi can overtake me easily~~~ But I don't understand why the rev lights will turn on again when i step hard on the gas padel after warm up.
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Re: Hi all ~ BMW newbie here~

Postby littleghost » Wed Dec 15, 2010 1:52 pm

hi, coolguy,

welcome to M3 ownership . my m3 is 04' . hope see you next morning drive.
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Re: Hi all ~ BMW newbie here~

Postby digi » Wed Dec 15, 2010 3:02 pm

COOLGUY wrote:Digi, you are right, when the car is warming up, even k-car or taxi can overtake me easily~~~ But I don't understand why the rev lights will turn on again when i step hard on the gas padel after warm up.


should be the shift indicator light telling you when the optimal change is.
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Re: Hi all ~ BMW newbie here~

Postby COOLGUY » Wed Dec 15, 2010 3:08 pm

Hi ! Little Ghost. Hope to join MD with U guys.

Digi gor. Noted. Thanks
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Re: Hi all ~ BMW newbie here~

Postby kenysl » Thu Dec 16, 2010 11:41 am

Hi Coolguy,

Welcome and I'm very in love with this machine!

From my readings on the internet, the major reason for the "chok" symptom on the E46 M3 is the weak low end torque. The car has a very power mid range and high end, but the low end is at a fraction compare to the mid-range.

So to correct this symptom, the most effective way is improve the low end torque. I've changed my cat and recently header to accomodate this. The sport cat alone would drastically correct this symptom, the SMG performs a very close to real auto car, given that you need proper throttle control. The only annoying thing left was it downshifts itself when going downhill, which I don't think you can do anything about it, its the same in auto cars anyway. The stepped header will further smoothen the shift as low end torque again is improved. The standard E46 M3 exhaust is very restrictive and I did not notice until the exhaust has been upgraded.

Just modding the exhaust system will improve so much. The SMG ECU, its not worth it. I've applied the ESS SMG program and I can hardly tell the difference, unless I am blasting the car and shifting at the high end all the time!
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Re: Hi all ~ BMW newbie here~

Postby COOLGUY » Thu Dec 16, 2010 3:09 pm

Kenysl CHing, so can you suggest any exhaust system for me? Thanks
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Re: Hi all ~ BMW newbie here~

Postby kenysl » Thu Dec 16, 2010 5:12 pm

Basically, any sports cat will do. I use Milltek and many uses supersprint. The backbox muffler really doesn't do much except make noises...haha.

header, straightly supersprint stepped header, this is the only one promise increase low end torque.
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Re: Hi all ~ BMW newbie here~

Postby COOLGUY » Thu Dec 16, 2010 5:16 pm

got it ~ Thanks
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