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      05-15-2018, 01:40 PM   #1
MSully96
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Drives: 2013 335is M6 Coupe
Join Date: Jul 2017
Location: MD

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Why do a MHD backend flash on Jb4?

Ive looked around a bit and cant seem to find answers although I see many people doing it. Given the mods in my signature, what benefit comes with doing an MHD backend flash? Within the coming months I'll have inlets and FMIC and that would mark my build complete...unless I get power hungry again and get a e85 fuel pump or upgrade turbos..

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5/19/18 UPDATE AFTER MHD PUMP BEF: Editing this post because this needs to be said. A few hours ago I did the pump bef via mhd and all I have to say is: My. God. After a little driving and giving the car time to re adapt map 5 and dial everything in, I am in shock at the difference this made. Responsiveness, smoothness, faster spool + a couple more pounds of boost, and the car throws me even further into the back seat! If anyone ever is on the fence about doing a BEF, there is no reason to wait or debate it. The outcome is UNREAL! Couldnt be happier!
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2013 335is Manual
JB4 G5 ISO - MHD E85 BEF - E45 - Fuel-it Stage 1 - BMS DCI - ECS Chargepipe & BOV - VRSF 3" d0wnp1pes - Muffler Delete w/ 3.5in Magnaflow Tips

Last edited by MSully96; 05-19-2018 at 06:47 PM.. Reason: WOW
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