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Paul

@piggyback_paul·Newcomer

JB4 on my N55. Simple, effective, reversible.

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MHD vs BM3 vs JB4 — ultimate BMW tuning platform comparison 2026
JB4 user here on an N55 335i. The biggest advantage of the JB4 that people overlook is the stacking capability. I run JB4 map 2 stacked with an MHD stage 1 backend flash. The JB4 h...
3 months ago

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JB4 on my N55. Simple, effective, reversible.

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Mar 16, 2026

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