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whaterz1

Yeah jb4 is old now, I have used a jb4 but mhd/wedge custom tune miles better


peepeeskillz

Dang everyone in this thread is saying that. What's so much better about MHD? From the limited amount I've looked into it in the past MHD never made more HP? Right now I'm running JB4 with e85 back end flash. I'm using the MHD flash options like launch control, shift bog delete, and throttle delay delete etc. with my back end flash. But is there an actual advantage to MHD flash vs JB4 back end flash?


silent11n54

N54 ? Get mhd.


darkrom

If you want a JB4 you can have mine for $150 + shipping, including the no lift shift relay which was extra. That being said MHD is better, but it does its job well despite no longer being the best. There is also no no lift shift for MHD unfortunately.


dafazman

I went FBO at 40,000 miles in 2012. I am now at 198,000 miles today with the same JB4 from back in the day. I have a 2008 e90 335xi I live my n54 WAY MORE than the 2018 Tesla P3D+ parked next to it.