Not too sure how is the wiring for your fan. Like I said usually there is a fan speed controller controlled by the ecu which is completely variable, though I could be wrong. Or maybe it is like the evo fan where there is 3 wires to power the high and low speed mode. If it is the variable type, don't think you got any method of controlling the speed lol.The speed control of fan, can i bypass the ECU and use an after market fan controller instead? I just noticed the car's fan only got 1 speed, HIGH at all range. LOL.
Thanks,
Ken
The ficd mod will be the cheapest and easiest mod to do. I would suggest you try the ficd method first or you try to press your throttle slightly, raising the rpm to 1500rpm or so then turn on the ac and adjust your throttle until it stabilizes at 1000rpm see if the issue appears and also your voltage.I will explore on FICD part. May be that will stabilize my rev even more when in traffic. I will do the pulley or diode mod first to the alternator.
My mechanic that did the swap said i should not use SPAL fans, very problematic for this kinda swap. I would like to hear the fan sound though.
Thanks,
Ken
Also if what I suspect is true where the voltage drop is due to the rpm dropping due to high load placed by the alternator, downsizing the pulley will apply even more load on the engine.