Tranny Swap Options for e82

Sep 5, 2023
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I have a 2010 135i with 595 rwhp and 550 ft lbs torque (93+methanol) and I'm about to turn it up even more by going e85. What are the Pro's and Con's of doing a 6hp28 swap versus 8hp70 swap? 6hp28 seems like it is easier and cheaper, but I read fantastic threads about the 8 speed. What is the advantage? I read good things about both options but not much on a comparison.

Any other good options? I like the idea of DCT but it seems less reliable. I'm not interested in making this car a Manual. I'm not into racing, just an old guy who likes to have fun on the street.

Regards,

Eric
 
Sep 5, 2023
16
7
0
I'm going 6hp28 swap with Guru Autowerkz. It seems like a cheaper and easier upgrade plus this tranny can handle loads of torque. The 8hp shifts faster. But with Rods tuning I don't think it will be much different.
 
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N54gasm

Sergeant
Feb 6, 2017
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New Freedom
www.spoolnmotorsports.com
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2008 BMW 135i
I'm going 6hp28 swap with Guru Autowerkz. It seems like a cheaper and easier upgrade plus this tranny can handle loads of torque. The 8hp shifts faster. But with Rods tuning I don't think it will be much different.
Been rocking the 6hp28 in my e82 for a little over a year now. Shifts crisp/quick with rods tune.l, and will handle all the torque lol
 
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