Changes by last author:
Changed:
| * note: for homemade HALL setups, the extrapulse is a remarkably nice simple option (but requires firmware >= 1.1.96), especially if made with bolts (=> less bolts needed). |
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* note: for homemade HALL setups, the extrapulse is a remarkably nice simple option (requires firmware >= 1.1.96), especially if made with bolts (=> less bolts needed).
* Traditionally VR was cheaper (for car manufacturers) * while HALL is less prone to noise and easier to install (especially by less experienced installers, or without oscilloscope and careful inspection). ** HALL is recommended for any home-made wheel. (with the simpler ECU interface, less demanding wire-shielding and testing, the total cost is better than VR anyway) 12-2 pattern (missing 10 and 11'oclock drill) crankwheel for 3cyl, 4cyl, evenfire 6cyl, 8 cyl |
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* normally 12-2 recommended instead
** because with a 12-1 crankwheel, during cranking the RPM can change more than 50% between 2 normal teeth (30 crankdeg) especially at TDC with high compression (in that case advanced filtering might be needed with adjusted, eg. 170% threshold) ** This is 12-1 because it is mounted on the gear-driven cam of a I6 (producer-gas powerplant) engine where 12-2 is unsuitable. |
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* 12-2 pattern (10'oclock drill also missing) is a better crankwheel for 3cyl, 4cyl, evenfire 6cyl, 8 cyl
** because with a 12-1 crankwheel, during cranking the RPM can change more than 50% between 2 normal teeth (30 crankdeg) especially at TDC with high compression (in that case advanced filtering might be needed with adjusted, eg. 170% threshold) ** This is 12-1 because it is mounted on the gear-driven cam of a I6 truck (producer-gas powerplant) engine where 12-2 is unsuitable. |
| V3 supports either HALL or VR sensor (jumper selectable). Multitooth wheels are usually VR type, but HALL is also possible. |
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V3 supports either HALL or VR sensor (jumper selectable). Multitooth factory wheels used to be mostly VR type, but more and more HALL after 2000.
HALL (audi AAN addon):
VR also exists (audi AAN addon, HALL recommended for new installs):
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| * 135-136 cranktooth requires some help from external HW, like: InputTrigger/AudiTrigger board, or an improved trigger handler in firmware (rewrite some part in ASM). |
| * 135-136 cranktooth requires special HW InputTrigger/AudiTrigger (which is standard VEMS ECU option, and fw support) |