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Title: 1.8T APX conversion to Wideband BAM ECU Post by: NickB5 on February 09, 2026, 03:16:32 PM Hi all,
Working on swapping a stock APX engine into a Golf IV GTI. I would like to make the conversion to a wideband ECU while being at it. Bought a BAM ecu for this purpose: 8N0906018H, the original APX ecu is a 8N0906018AE. The conversions to the loom have been made. Now working on getting the file of the BAM ecu sorted for the APX engine. Reading this post (http://nefariousmotorsports.com/forum/index.php?topic=17043.0) I made the following changes: CLAATR2 → Set to 0 ESKONF → Disabled rear O2, SAI pump, and VVT → AA FF 00 F0 FF FB 3F KFKHFM → Copied over MLHFM → Copied over TVUB → Same as APX CATR → Set to 0 (no cat) → correct? TABGSS - Not in APX and BAM xdf KFZWOP → Copied over KFZWOP2 → Copied over KFZW → Copied over KFZW2 → Copied over CLAHSH → Set to 0, same as APX CLAHSHE → Set to 0, same as APX CLALSH → Not in BAM xdf CDHSH → Set to 0, same as APX CDHSHE → Set to 0, same as APX CWDLSAHK → Set to 0, not in APX xdf CATR → At 0 in BAM, not in APX xdf CLRSHK → Set to 0, not in APX xdf CLRSKA → Set to 0, not in APX xdf CDATR → Set to 0, same as APX CDATS → Set to 0, same as APX CDHSH → Already at 0, same as APX CDHSHE → Already at 0, same as APX CDKAT → Set to 0, same as APX CDLASH → Set to 0, same as APX CDLSH → Set to 0, same as APX CDLSV → Not in BAM xdf, 1 in APX CDNWS → Set to 0, same as APX CWKONABG → Set to 0, 5 in APX CWKONLS → Set to 0, 1 in APX KRKTE → BAM: 0.08347, APX: 0.0832, left as is KBV → Not in APX and BAM xdf APX KFZW → Copied to BAM KFZW & KFZW2 APX KFZWOP → Copied to BAM KFZWOP & KFZWOP2 The post also mentions copying the BGSRM maps: KFURL → table axis size does not match KFPRG → table axis size does not match KFPBRK → Not in APX and BAM xdf KFPBRKNW → Not in APX and BAM xdf Does this seem correct? Any guidance on the parameters that where not present in the BAM and/or APX definition file? I attached a screenshot of the KFURL tables for both the BAM and APX file. What is the process of copying these over? The files and definition files I used are also in the attachment. Thanks in advance and kind regards, Nick Title: Re: 1.8T APX conversion to Wideband BAM ECU Post by: BlackT on February 17, 2026, 07:01:06 AM That is enought
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