A/C On Idle goes crazy
#8
Done.
I think Jeremy has the write-up on FM's site. It's been posted here before, i'll find it.
[edit]
Got it. It was in one of your past threads. :P
https://www.miataturbo.net/hydra-58/...72/#post890999
I should clarify my gross blanket statement i made earlier. I've seen reports that alternator control finally actually works well in 2.7, so if you're on a newer Hydra, give tuning that PWM map a shot. If you're on an older Hydra, up to you. I'm on 2.5, and we're going to give tuning it one more shot, nobody has managed to get it right so far, though. If it doesn't work this time, then i have an NA8 alternator ready to go.
Also: it could very well be something else. I know my ISC settings are garbage which isn't exactly helping anything (i experience the same issues as OP with a/c on), but i also know that some (if not all) of my idling issues are voltage related, the voltage is all over the place. (Radio cuts out when putting windows up from time to time, idle ***** up massively when cooling fan kicks on, etc etc etc)
#10
2.1 & 2.5 idle control left a lot to be desired. 2.6 was O.K., and 2.7 is actually pretty darn good. A/C off I'd call it dialed. The A/C on control isn't fully OEM, but it's totally acceptable / no worries status, and you have lots of tuning variables dedicated to it. FWIW idle control is generally one of the most difficult things to set up in a standalone.
2.7 alternator control is great, way better than before considering you also have control over the target. That said, I can email the 94-alt swap instructions to anyone who needs them. I would still do this in a race car, KISS.
2.7 alternator control is great, way better than before considering you also have control over the target. That said, I can email the 94-alt swap instructions to anyone who needs them. I would still do this in a race car, KISS.
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