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B58 S58 PNP Boost Controller Solenoid - EBCS

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€292,50 EUR inc. VAT

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A plug-and-play 3-port MAC valve boost control solenoid for external gated turbo setups on the B48, B58 and S58, giving your ECU precise, repeatable control over boost. It integrates directly with a MOTIV ReFlex or CANBOXPRO unit, so setup is simple and there is nothing to splice.

The harness is built to last, with a full-length anti-chafing sleeve and extended wire length so you can mount the solenoid wherever suits your build. It ships with custom Visconti Tuning fittings: the T fittings sit deep in the vacuum line and leave enough of a gap to secure with a zip tie without damaging the line, and the threads are tweaked for a cleaner, flush look.

Key points

  • 3-port MAC valve for precise, consistent boost control
  • Built for external gated turbo setups on B48, B58 and S58
  • Plug and play with MOTIV ReFlex or CANBOXPRO
  • Full-length anti-chafing sleeve for durability
  • Extended wire length for flexible mounting
  • Custom Visconti Tuning T fittings, deep seating with room for a zip tie and a flush thread finish

Fits: BMW B48, B58 and S58 (external gated turbo setups)

Available on request.
Estimated EU delivery: 7–14 business days.
  • Vendedor MOTIV

Product Use & Compliance

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FAQ

What does a boost control solenoid (EBCS) do?
The solenoid controls boost pressure by regulating the signal to the wastegate. An upgraded one can give the tune finer, faster control of boost.
Is it a plug-n-play swap for the factory solenoid on B58/S58?
It is made to replace the original solenoid using the same connections on the B58 and S58. Confirm your exact engine so it plugs in directly.
Why upgrade the boost control solenoid?
A better solenoid reacts faster and more precisely than the factory part. That helps the tune hold boost steadily and respond quickly.
Does it need a tune to take advantage of it?
It works best with a tune set up to use the improved control. Without one the benefit is limited, since the stock map does not exploit it.
Does it improve boost response or just accuracy?
It can help both, giving quicker response and steadier boost control. The real-world gain depends on the tune driving it.
Is it useful on a stock car or mainly tuned builds?
On a stock map the benefit is small, since the car does not demand finer control. It matters most on tuned builds chasing precise boost.

Customer Reviews

6 reviews

Cole M.

Swapped the stock solenoid for this EBCS on my B58 and boost control tightened up noticeably, holds target far more consistently now. Plug and play, no wiring faff

Ciaran S.

Proper upgrade, boost holds rock steady, easy swap

Immanuel E.

Came a bit later than I'd have liked, though it was well packaged and the unit feels quality

Hannes J.

Fitted it to my S58 alongside a tune and the difference in how it holds boost is clear, no more creep or tapering up top. Connectors matched the factory ones exactly

Gaspar Z.

Tuner recommended this EBCS and said it let the map hold boost much better, plugged straight in with no splicing. Runs spot on now

Leroy N.

Was chasing inconsistent boost for a while and this sorted it, target is bang on every time. Plug and play made the swap painless