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      06-26-2025, 07:55 PM   #5
1ExotiiC
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Drives: 21’ BMW 540ix
Join Date: Jun 2025
Location: Jersey

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Quote:
Originally Posted by drive_to_survive View Post
I think the JB4 alone is doing wonders on the Gen3 platform but for us Gen2 B58 owners, femto unlock and stage 2 is needed.

The minimum for close to 500whp, the recommendation is

bolt ons:
a downpipe
MHD flexfuel kit.

femto unlock
MHD license
XHP license

Once you get your ECU unlocked through femto with MHD base

you can pretty much buy the licenses yourself online (sometimes there are good discount codes available) and flash them with the MHD universal adapter.
the adapter works really well with clearing out error codes, bimmercode and bimmerlink too so also a must buy for ~$70

with the above setup, once you start running E30 or E40, I think you almost pushing close to 480-500 whp.

I haven't dynoed my car but I get consistent 3.3-3.4 0-60 on the dragy and 11.6, 11.7 quarter mile times.

Ethanol really makes a difference.
Damnn bruhh, this is annoying. I really wasn’t trying to do femto for a while. Eventually i will. How long did the process take for you to send it out and get it back?

Either ways I want to stick to jb4 for a bit. What’s my best bet in making decent amount of power? Direct injections with intakes, DP? Or more
Appreciate 0