M1tch Posted March 31, 2022 Report Share Posted March 31, 2022 Hi all, Currently road tuning my car to build up a good open loop wastegate duty cycle base table, next phase will be to then use this as the base table and drop it into closed loop boost control. Plan will be to have boost by gear and also lower/reduce boost at lower throttle as well as when the engine is not up to full temperature. Just looking at some of the base maps that have PID enabled as well as the help file I can see that the integral gain is usually set to 0.3 with the derivative gain set to 3. Looking at a few of the base maps for other cars like the TT and Celica ST205 however the integral gain is set to 0.08 and the derivative gain is set to 0.5. My question is, what should I start my closed loop PID to as a starting point? Will mainly be working on getting the open loop table sorted out first but would be great to get some basic settings sorted for closed loop. Engine is currently fitted with the weakest wastegate spring during some shake down running (around 6-7psi) and planning to target something like 10-12psi as the 'higher' boost setting initially although the gearbox is rated to hold the torque of over 20psi so the current boost levels aren't going to really concern the engine if I 'overshoot' the boost to say 14psi although I would doubt it with such a weak spring. Quote Link to comment Share on other sites More sharing options...
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