B58
B58
2016+ M240i, Supra 3.0, 340i, 440i, 540i, X3 M40i, M340i, M440i, Z4 M40i
3.0L Inline-6, Single Turbo
Stock Power
340–380 WHP
Max: 1000+ WHP with built motor
Fits these models
F-Chassis
340i, 440i, M240i, 540i
G-Chassis
M340i, M440i, X3 M40i, Z4 M40i
A90 Supra
Supra 3.0, Supra
Power stages
| Stage | 93 Octane | E70+ |
|---|---|---|
| Downpipes Only | 355–395 WHP | 355–395 WHP |
| Tune Only (Stage 1) | 400–430 WHP | 485–515 WHP |
| Tune + Downpipes | 420–450 WHP | 485–515 WHP |
| Full Bolt-On (Stage 2) | 430–460 WHP | 515–545 WHP |
| FBO + Flex Fuel | 450–480 WHP | 545–575 WHP |
| Turbo Upgrade + Tune | 500–600 WHP | 670–775 WHP |
| Turbo + Tune + Flex Fuel | 550–650 WHP | 800–1000 WHP |
| Turbo + FBO + Flex Fuel | 550–650 WHP | 800–1000 WHP |
Platform Guide
B58 Tuning Guide: Supra, M340i & Beyond
The B58 is one of the best modern tuning platforms. Downpipe + tune is just the beginning.
Build one in the app
Configure parts, see real-time WHP estimates, and track your budget.