I am tuning a 1jz-vvti engine on a link fury ecu. I am having an issue where the rpm signal is jumping from around 6,000 rpm to something like 12,000 rpm erratically. It only happens for a split second but it's enough to trigger the rpm limiter. It doesn't do it at the same RPM every time. It also only seems to do it under load. If I just rev the engine in neutral it seems to just hit the normal rev limiter. I put in a new crank sensor as well as a new cam sensor. The harness is a flying lead harness from link so the ecu side of the harness is all factory terminated and the sensor side looks solid.
I tried all the filtering levels in the software and none of them fixed the issue, some of them just made it worse. i also adjusted the trigger arming threshold tables in the problem areas with no positive response.
I have the cal file as well as a log of the rpm signal spiking if anyone would like to take a look.
Any ideas or have any of you had this issue? Any feedback would be greatly appreciated!
Thank you!
DYNO E85 final trigger issues.pclr
palmer 1jz vvti erratic rpm up top.llg
