Changes by last author:
Changed:
| There is some risk of an abnormally high amplitude VR signal at the missing tooth. Scope (or soundcard) recording of this trigger is definitely a good idea. |
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With a VR trigger, removing tooth means risk of anomalies at the missing tooth:
* an abnormally high amplitude (higher R181 can help: 180k..270k) * or even double-hunchback toothshape. A 12 tooth mazda rotary wheel (which uses axially mounted VR sensor) was converted to 12-1 with angle grinder. It idled well, but showed RPM problems around 1000 RPM. LM1815pin5=5V did not help. Adding 100nF cap to the filter at LM1815pin3 helped (10nF was tried first, that only raised the problem to 1500 RPM). This agressive filter is a bit of a hack. It delays the signal (in a reproducible way), which can be 4..5 crankdegrees at 9000 RPM (theoretical maximum is 7.5 crankdegrees delay, a quarter of the 30 degree tooth). Scope (or soundcard) recording of this trigger is definitely a good idea. |
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* DROPPED: minimal TPS%, when the powershift is active, for example: powershift_min_TPS=80%
**Why dropped??? At downshifts using right foot for brake and accelerator powershift function can bother. Find video called Drift Bible if you do not knew what i write about. MembersPage/GintsK |
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* Important: minimal TPS%, when the powershift is active, for example: powershift_min_TPS=80%
** MembersPage/GintsK suggests the iac_tpsthresh is not sufficient for this threshold, because: during downshifts using right foot for brake and accelerator, powershift function can bother. (see Drift Bible video) |