Changes by last author:
Changed:
| This page is all about the Siamese port problem experienced by the BL A series engine. This is not the only engine to suffer this problem but it is the only one of this design to have been fitted with fuel injection. |
| This page is all about the Siamese port problem experienced by the BL A series engine. This is not the only engine to suffer this problem but it is the only one of this design to have been fitted with fuel injection. |
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With configurable injection end-angle, it's not too hard to add the necessary extras The real problem is that even an experienced installer is very likely to blow up an engine or two while tuning a siamese port injected engine. Not an issue for a factory, where they sacrifice 20+ engines anyway. But for a home tuner, usually the ECU's reputation suffers. The risks and difficulty of tuning were the primary reasons we decided to not add support to diesels and siamese-injection so far. An application where tweaking results in 30..50% success rate makes reputation worse. Technically: * Now that there is Injection angle, and individual injector trim * introducing perhaps an 8x8 table for individual injector trim replacing the simple curve. ** IE individual injector channel x rpm x trim, thus introducing the RPM element. One row per injector channel and 8 columns for RPM. This would satisfy the needs of siamease port injection, as long as injection angle curve is still present. After the dual-camshaft control is tuned with all adjustable-cam engines (Toyota, Mitsubishi,Suzuki,BMW,Audi,Volvo,etc...), we rethink this (either with dual wideband onboard, or with a Vems WBO2 round as a tuning tool). Classic Mini and MG ;) ---- |