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Discussion Starter #1
will 3.91 differential work on an M3 with an SMG II tranny? some people say yes and some say no. so i dont know.

just want to see what you guys have to say?
 

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Senior Eurowerkz Member
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you should call dinan

they would tell you. and by the way they have 440 gears for the m3. i was going to call this week but got bussy at work and forgot to call. let me know what they say please.
bobm3 :thumbup: :thumbup:
 

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My 3.91 diff works perfectly with my SMG M3. It is by far the best mod. I have had it on for ~5 months now.

BoGiE
P.S. What are your redlines with the Eurobahn software?
Are yours all different also?
1st-8000
2nd-8050
3rd-8200
4th-8250
 

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I like Techron
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Re: you should call dinan

bobm3 said:
they would tell you. and by the way they have 440 gears for the m3. i was going to call this week but got bussy at work and forgot to call. let me know what they say please.
bobm3 :thumbup: :thumbup:
4.10 or 4.40 gears are off the top for E46 M3 application. Stick with the 3.91 upgrade as it is far for driveable...
 

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thanks alot for the information

can you let me know how much was it to change the rear gear for the m3. from the 364 to the 391 gear. i would think it would be cheaper sence you got the set up already. and it would not be
like over the 2,000.00 range ? i forgot the exact amount that i saw in another post.

can you let me know how much was the 391 gear to put it in your m3. thank you in advanced about this really.
bobm3
 

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Evosport did mine. I believe I was charged 2800 installed (the going rate at the time with no subsitutes). Install runs around $350-400.

BoGiE
 

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Discussion Starter #8
bogie said:
My 3.91 diff works perfectly with my SMG M3. It is by far the best mod. I have had it on for ~5 months now.

BoGiE
P.S. What are your redlines with the Eurobahn software?
Are yours all different also?
1st-8000
2nd-8050
3rd-8200
4th-8250


my redline is still 8000. do you ahve the eurobahn software too? and are those your redlines for each gear? and how is that possible?
 
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