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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 07-28-2012, 12:28 PM   #1
Hbenmeir
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Manual conversion

I want to take out my manumatic auto and swap it with a 5 or 6 speed manual what do I need to do
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Old 07-28-2012, 12:35 PM   #2
Crestwood1001
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Manumatic, that's a new one
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Old 07-28-2012, 12:38 PM   #3
Hbenmeir
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That's what I have always called them or referred to them as automatic with manual option manumatic retarded I know
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Old 07-28-2012, 12:53 PM   #4
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Steptronic was the word you didn´t asked for

So, i guess you need the gearbox itself, flywheel with clutch, cardanshaft and maybe differential, depending if its getting a 5 or 6 speed.

afterwards you have to recode and add 2 wires, if i remember correctly
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Old 07-28-2012, 01:41 PM   #5
Hbenmeir
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Ok that's what I need to know. Not sure on diff that sucks cause i would rather use mine cause of the 3.38 rather then the 2.93
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Old 07-28-2012, 01:42 PM   #6
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Cardenshaft ? Driveshaft
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Old 07-28-2012, 01:43 PM   #7
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Recoding and wires was what I was really wondering about and 6 speed to answer that. Thank you very much for info
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Old 07-28-2012, 01:49 PM   #8
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Also I would imagine pedals and cylinders master and slave no?
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Old 07-28-2012, 01:57 PM   #9
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right, forgot that
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Old 07-28-2012, 02:13 PM   #10
Hbenmeir
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Why wouldn't I be able to use my diff?arent all 3series non awd the same wheel base? I could see needing the d-shaft
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Old 07-28-2012, 03:00 PM   #11
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Would you like to drive a 5speed manual with the 3.38 diff? i haven´t played woth final gear ratio to check, don´t know how driveable this combination would be
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Old 07-28-2012, 03:17 PM   #12
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My dad had a 70 chevy c-10 with a 3.53 first gear with 3.91 in the back truck had over 330hp ran a 13.37 1/4 mile also had aluminum fly very quick. Car would have a wicked 1st gear without question but I think I can deal
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Old 07-28-2012, 03:22 PM   #13
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I have a 3.46 with a 5 speed. Good enough for me. Unless you do highway most of the time

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Old 07-28-2012, 03:24 PM   #14
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Since no one answered really, my best guess is that at 80 mph your rpms will be at 3500+ with the 3.38 diff. I think that's about right.
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Old 07-28-2012, 03:25 PM   #15
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Also keep in mind the 6 speed zhp
Has 3.07 not quite 3.38 but with the 6speeds 1st gear very close
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Old 07-28-2012, 03:36 PM   #16
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That's why the very slight overdrive in the 6speed will be usefull
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Old 07-28-2012, 03:43 PM   #17
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Figuring out all the gearing is a bitch but knowing the final drives is key the 5 spd man with 2.93 has a 5th gear overall of 2.93 cause 5th is 1:1 the zhp with 3.07 and 6spd has a overall 6th gear of 2.61 cause 6th is .85:1 an overdrive. the 6spd with my 3:38 cause that's what comes with the automatics will have a 6th gear of 2.873:1 slightly lower then the 5spd
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Old 07-28-2012, 05:33 PM   #18
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But I found out what I needed to know so like I said earlier very much appreciated
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Old 08-21-2012, 07:47 PM   #19
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Quote:
Originally Posted by 325rider View Post
Since no one answered really, my best guess is that at 80 mph your rpms will be at 3500+ with the 3.38 diff. I think that's about right.
I have 3.38 w/ 5 spd and its 3500-3600 rpm
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Old 08-25-2012, 08:42 PM   #20
Hbenmeir
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My steptronic 5 speed does an even 100 at 3500 3600rpm in 5 gear. Can these things be built to take a little more pounding.
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