Good day,

A friend had a problem today using the Greddy E-01 Boost Controller, the car jerk at 4000-5000rpm when the BC is turned on, but the problem disappear when the BC is turn off. Hope to get some advise and opinion from gurus here. What I did was datalogging using evoscan (with BC off and with BC on). Here's the diagram for your comparison purpose, could you spot any problem?

Graph with BC off (engine doesnt jerk at high RPM)


Graph with BC on (with 14.5psi, car jerk at 4000-5000rpm)


If a copy of datalog is required, you can download them at:
Boost off datalog

Boost on datalog

Additional info:
- stock evo7 JDM ecu
- no AVCR/SAFC

Thanks!

 

Problem solved. BC pulse went wrong, adjusted and the problem go away.