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Summary of change:
'''STVA Secondary Throttle Valve Adjustment''' In shop ordercomment add "Please instead of internal DBW, add additional 2A 4-wire bipolar stepper driver controlled from some ECU PWM output". (same price as internal DBW bridge, select that for price). Suzuki GS-F 650/1250 (ccm3) ---- '''Secondary Throttle Valve''' * '''2A 7 Ohm bipolar 4 wire stepper for intake pipe cross-section area control''' * 256 steps enough? ** or more steps needed? Please check if available * step down to 0 (actually fully up?) at powerup/ Ignition ON->full open-> set 15% position before/during start (as set for 0 RPM) * step to command position after that (PWM input or digital input) '''Analog input 0.5V .. 4.5V (supplied from 5V)''' * '''0.5V .. 4.5V''' * mcp3208 analog input for logging.
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