Spyrosgeo Posted June 29, 2021 Report Share Posted June 29, 2021 Hi, we have a 2jz vvt-i engine with g4+ storm.We have a problem with vvt,it malfunction.You can see it on picture 'vvt problem'. Also i test vvt with a fury g4x and it works correctly with the same calibration. What we must also check ? BMW SPYROS 2JZ VVTI PROBLEM VVTI.llg Quote Link to comment Share on other sites More sharing options...
Vaughan Posted June 30, 2021 Report Share Posted June 30, 2021 The PID control between G4+ and G4X changed and so you can't use the same PID values between them. You will need to tune the PID control properly, @Adamw might have some good starting values and hints for tuning Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 30, 2021 Report Share Posted June 30, 2021 1J & 2J vvti seem to be very sensative to oil pressure or viscosity etc. I have had some engines that work fine with our defalt settings and some that dont. Last time I done one I just halfed the Proportional gain and it worked fine. Try something like this: Quote Link to comment Share on other sites More sharing options...
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