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2007335ijosh 2007335ijosh is offline
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Default Stage 2+ time ? - 02-04-2018, 05:04 PM

I have an 07 335i has rb inlets with res relocation , vtt outlets , 7hd FMIC, charge pipe , synapse bov , has jb4 with mhd backflash
Ive been running on map 5 for a while and just finished install of parts listed and wondering if I should jump to the mhd stage 2+ tune ?
Im new to the tuning , what are ballpark hp numbers would I be looking at ?
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2007335ijosh 2007335ijosh is offline
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Default 02-04-2018, 05:22 PM

Also n54 **’s too
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Steve @ BMS/Fuel-It! Steve @ BMS/Fuel-It! is offline
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Default 02-05-2018, 11:48 AM

You'll want to stick with the JB4 BEF's.



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Default 02-08-2018, 10:17 PM

Agree - I would not cut out the JB4 (Which you'd have to do if you switch to the full-MHD-only maps). IMO [JB4+MHD BEF] > [MHD 2+ only].
What BEF exactly are you running?

Before you go and change your tuning approach, sounds like your next step maybe should be an LPFP upgrade (didn't see that listed), so you can support higher boost levels on the BEF.

What boost is map 5 targeting for you now? It can target up to ~19.5 psi with the BEF, I believe, but only if your fueling and mods support it.

What kind of fuel do you have access to - just pump, or can mix ethanol?

Impossible to guess hp #'s


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2009 535i - 548whp - sold
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n5418102 n5418102 is offline
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Default 02-08-2018, 10:24 PM

following this
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