pmw fan controllers

[sjaroslo]

How important does everyone feel it is to be able to turn the fans completely off above a certain highway speed? I see that now as the main difference between the Painless F5 and the DCC approach; the Painless can do it, the DCC does not. On the one hand, that used to drive me crazy with my previous car. Because of the way the electronics were set up, once the fan kicked on but the temperature reached an equilibrium, the fan would never turn off on the highway, so the ability to decode the VSS signal and turn everything off after 5 seconds above an adjustable speed sounds very appealing.



On the other hand, I am pretty sure that the DCC is a top quality product, it brings an endorsement from John Parsons (which carries a lot of weight in my mind), and I have a vaporworx set up for the fuel pump that also will use DCC stuff, so there is precedent....

I think I also like the DCC approach of putting a probe in the radiator, rather than screwing in to the port on the head, but I'm not sure if I like it because I think that it is more technically accurate, or that it simply avoids having to come up with another "tee" fitting to be able to drive both the controller AND my water temp gauge; the port on the other head will use the factory sender to feed the ECU; not sure if the signal can be split electrically or whether one would need two senders (or three, total). I guess I have the same issue with the VSS--I need to feed the signal from the trans to the ECU, but there is a VSS output on the bulkhead connector, but I was going to use that to drive my speedometer.... Not sure that it can also be routed to the pwm controller...

*Sigh*