The manual says the PID settings might need a minus sign for boost control PID. I just tried setting mine up and had to use minus signs for the PID. why is this?
Also, can people please share their closed loop boost settings so I can compare? I'm running PWM table and target MAP table with PID. It's not very stable with a PID of -50,-10,0. Valve is a MAC running 25hz with zero pulse width being wastegate pressure. Car runs good using just the PWM table but goes to shit with PID in closed loop. I am in the early stages of logging and diagnosing so any heads up would be appreciated.
Cheers
Closed loop boost settings issue
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b930
- Posts: 13
- Joined: Sat Dec 01, 2012 1:06 am
- ECU Model: S80 Pro
- Firmware Version: 65
- Location: Perth, Australia
Closed loop boost settings issue
S80, Porsche 1988 930 flat six aircooled, GT35 w/ twin scroll 1.03A/R dual gated equal length headers, SC cams, Turbokraft intercooler, 72# injectors.
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b930
- Posts: 13
- Joined: Sat Dec 01, 2012 1:06 am
- ECU Model: S80 Pro
- Firmware Version: 65
- Location: Perth, Australia
Re: Closed loop boost settings issue
Hi all, can I please ask anyone successfully using closed loop to post up some example map settings? I can get the system to work very well in open loop, but soon as I go closed, it can't seem to control boost very well irrespective of PID settings. PID seems only to respond if minus is used infront of number, but overboosts wildly. Appreciate at direction.
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S80, Porsche 1988 930 flat six aircooled, GT35 w/ twin scroll 1.03A/R dual gated equal length headers, SC cams, Turbokraft intercooler, 72# injectors.
Re: Closed loop boost settings issue
when i have played with PDI loops i have found it useful to run the ecu with a simulator and connect a pot to the feed back input, that way you can get it all close without even going near an engine!