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Applies to

Check the hardware and software limits stated in this article.

CSL software context

The collection’s Basic XDFs/hw0401_V4_Basic.xdf header records 211325000401PD11 and a 64 KiB region. MSS54HP CSL hw0401 Basic XDF. Keep that software identity separate from the HP hw2701 example and any binary obtained from another source.

Recorded release and ZB pairs

YulCmr’s CSL release table lists these pairs for E46 M3 CSL. They are source records, not a recommendation to install a release. CSL release and ZB records.

Software releaseZB / ZUSB
78373297837328
78373317837330
78373337837332
78373357837334
78373377837336
78373397837338

The source distinguishes regional/configuration variants and flags an uncertainty concerning diagnostics on some versions. Retain its qualifications and independently establish the intended equipment and behaviour for the actual application.

Hardware and calibration must describe the same installation

The hardware research documents changes involving memory devices, intake flap operation and pressure sensing. Its memory notes also distinguish camshaft-dependent offsets and pressure-sensor/driver differences during conversions. MSS54HP/CSL hardware research index; MSS54/HP conversion and memory notes.

Keep a conversion record containing the controller hardware, memory changes, fitted sensors, manifold/flap, camshafts, transmission and exact software. Treat each conversion step as a scoped hardware/software claim with evidence. A software label or a table that opens in an editor does not establish that the physical installation matches it.

Extending this branch

Add worked examples here with their original definition revision, read format, hardware photographs where appropriately sourced, and measured results. Preserve the source release IDs separately from a locally modified file’s identity. Use the HP family record for the documented 64 KiB extraction convention and the shared validation guide for the change record.

Sources and evidence

Original Tuning Wiki reference notes. Definition data and source-code observations are identified as such; they do not establish runtime behaviour or a tested calibration. Validation suggestions and worked arithmetic are editorial guidance. Sources checked 10 November 2026.

MSS54/MSS54HP: saildot4k, the OpenSource MSS54 Project and credited contributors. Use the original files and retain their individual credits. Hardware/CSL research: YulCmr and the community sources credited by that project.