BMW B58 Stage 1 Remap — 420–435bhp (M140i / M240i / 340i / 440i)
- Regular price
- £599.00
- Sale price
- £599.00
- Regular price
-
BMW B58 Stage 1 Remap — 420–435bhp (M140i / M240i / 340i / 440i)
WP Stage 1 — 420–435bhp / 450–460ft/lb
The B58 is massively underrated from the factory and responds to tuning like very few other engines. With a full recalibration of boost pressure, ignition timing, VANOS cam timing, fuelling and wastegate duty cycle, we extract 420–435bhp and 450–460ft/lb from the standard engine — a gain of approximately 100bhp with no hardware changes required.
The closed-deck block, forged crank and forged rods mean the internals are well within their comfort zone at this power level. The result is a completely transformed car — sharper throttle response, faster spool, and a relentless straight-six surge that has to be experienced.
We strongly recommend pairing this with our custom ZF gearbox calibration. The factory torque limits will hold back the engine's new output — our gearbox tune removes these restrictions, sharpens shifts and optimises shift points.
What's included: Custom dyno calibration with before & after printout Hardware required: None Recommended: ZF gearbox calibration (add-on) · NGK 94201 spark plugs
Workshop install only. 99 RON fuel required for optimal results.
BMW B58 Stage 1 Remap — 420–435bhp (M140i / M240i / 340i / 440i)
WP Stage 1 — 420–435bhp / 450–460ft/lb
The B58 is massively underrated from the factory and responds to tuning like very few other engines. With a full recalibration of boost pressure, ignition timing, VANOS cam timing, fuelling and wastegate duty cycle, we extract 420–435bhp and 450–460ft/lb from the standard engine — a gain of approximately 100bhp with no hardware changes required.
The closed-deck block, forged crank and forged rods mean the internals are well within their comfort zone at this power level. The result is a completely transformed car — sharper throttle response, faster spool, and a relentless straight-six surge that has to be experienced.
We strongly recommend pairing this with our custom ZF gearbox calibration. The factory torque limits will hold back the engine's new output — our gearbox tune removes these restrictions, sharpens shifts and optimises shift points.
What's included: Custom dyno calibration with before & after printout Hardware required: None Recommended: ZF gearbox calibration (add-on) · NGK 94201 spark plugs
Workshop install only. 99 RON fuel required for optimal results.
We keep a large inventory of stock at our warehouse however due to widespread delays in the industry, some items may be on backorder. If you need parts ASAP then please contact us on the live chat or at support@wayside-performance.co.uk and a member of our team will get back to you.
Unsure on fitment? Just drop us a message on the live chat or support@wayside-performance.co.uk and a member of our team will assist. Please make sure to include as much detail as possible including make, model, registration and the parts you are looking at.
