How to Build a 500whp BMW B58!

In today's video, Zach dives into the world of performance modifications for the powerful BMW B58 engine. If you are wanting to build a 500whp B58, you’re in the right place! This turbocharged inline-six is impressive out of the box, but with the right tweaks, it can reach new heights of power and efficiency. We'll walk you through the top performance modifications for your B58, covering everything from ECU tuning to fueling upgrades. Zach covers benefits, cost, and more to help you transform your BMW into the ultimate driving machine!

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00:32 – BMW B58 Background
01:38 – Original B58 Power Output
01:49 – B58TU Power Output and Update Specifics
02:50 – B58TU2 Power Output and Update Specifics
04:11 – Best B58 Mod #1: Tuning
05:23 – Best B58 Mod #2: Intake
06:25 – Best B58 Mod #3: Downpipe
08:23 – Best B58 Mod #4: Fueling Mods (E85)
11:23 – Best B58 Mods Summary
12:01 – Original B58 Power Potential
12:22 – B58TU Power Potential
12:37 – B58TU2 Power Potential
13:33 – B58 Mod Guide Conclusion

[DominicBrissette]

Stock intake and airbox is extremely well designed so other than getting an high performance air filter that should be good to go as far as performance is concerned.

I still went for an upgraded intake (with the inlet that goes all the way to the turbo) just for the sound. The default system has 3 "resonators" that muffle the turbine noises a lot.

I just love hearing the turbo much more, and for normal driving you don't really notice it much so it's not obnoxious either

[khaledn]

Great video! As a newbie, I am learning a lot as I own a 540i 2023 (B58TU300M1 type) but may I ask if I have no access to E85, and only a gasoline pump (high octane 98 fuel), what kind of tuning I can get? Also, having the 540i, I am not a big fan of the handling and suspension, I guess not so comfy on road pumps nor firm for body roll. Can you suggest the best suspension mods (having Runflats on 21inch rims, and I am happy to change these if required. Again, thanks a million!

[khumokwezimashapa]

Hey man. Great video. I'd like some tips here. So I plan on buying a F32 440i and modifying it to have the same or similar performance as the F82 M4 Comp. So around 450-500 whp and similar maneuverability.

I basically want the performance of an M4 without actually having the M4. Reason being I don't want the attention the m4 brings. I love the car, but I want something subtle like the 440i. Also the F32 is a bit more practical.

Other than modding the engine. What else can I do to get to as close to M4 performance as possible

[ctdope]

Can the B58 modded up to or around 500+ hp, function well as a daily driver and be reliable? I want a 440i gc next year, but dont want a headache to deal with. Thanks.

[joshbell]

ah yes the perks of living in a state with no emissions inspections

[Ibrahim_]

An update to this video would be nice!

[JP-fmkb]

Do you recommend JB4 Plus tune? And will it damage or void the warranty?

[patthonsirilim]

Dp cat back cold air intake ecu flash and meth 500whp is achievable on bone stock motor.

[IbrahimKhan-mytb]

I’m so confused, my friend has a 2021 m340i xdrive, he got his DME unlocked in Finland and has a chargepipe and dp, we just installed MHD flexfuel and he’s running E85 (realistically E80 not that it makes a difference), however it’s still not crazy fast. For reference my 2018 STI is making 520whp on a mustang dyno, and one of my modes in the car caps my whp to 400 wheel. When I race him on that mode and he’s on E85 we’re roughly neck and neck, but that would mean he’s only at around 400 whp (on mustang dyno)? Also before anyone says anything about power to weight, I’ve raced a stage 2 Supra (No E and also second gen) along with a stage 2 340i xdrive (also no E) and literally been neck in neck with both of them, so ik the power is possible. Also I’ve raced a stage 2 m240i with E50 and a stage 2 XHp trans tune and lost barely. My question is did we install something wrong and maybe there’s a boost leak or something, or does he maybe need a more aggressive OTS tune or even pro tune to make true 500whp? (Mustang not dynojet)

[anthonymendola]

Is there a tune for better gas mileage? Would love to be able to switch to a map on long drives to get 30+mpg

[zhihengli]

hybrid turbo, hpfp, water meth, downpipe and tune --- 500whp reliable

[zhyaryassin]

Hey man,

I got f36 440i and i have change to catless downpipe and intake also got a mhd ots map and xhp,

My point is that i haven’t upgraded hpfp, can i still run ots map like stage 2 with E85 octane, if so like how many liters or % should be in the tank with normal gas?? Cause where i live we got only 95 and 98 octanes

[Dymamgo]

I'm newbie in topic, what engine gen have bmw m440i from end of 2021?

[WhiteBeardDetail]

What gasoline additives can we use with the gen 1? ie- liquid moly Is valve cleaner injection cleaner Valve cleaner injection cleaner. And their speed Tech.

[sockz]

I had a “custom” stage 1 tune with air intake and catless downpipe , only got 9 WHP and 90 torque