Powerful 12" Pusher Fans

[Trevor]

I'm shaking my head here.

I don't think you quite understand what I'm saying...while you can point both the LS9 and LS2 ouputs at the "Rad Fan" function on my version of AEM Pro (3.23r9) there is only one "Rad Fan" setting which is common to all outputs that reference that function. You can not set LS2 and LS9 activate at two seperate temps based on pointing at the "Rad Fan" function alone. If you open LS2, flip to the function tab, change the on/off temps for the "rad fan" function to off the wall numbers, then open LS9, the function tab, and check those same temps you will see those same off the wall numbers you punched in while under LS2. Test it...they're tied together and they are not seperate.

About the only way you can have them both pointed to the "Rad Fan" but then behave even slightly differently is by setting one of the LS's to go active in the middle of the "Rad Fan" range. Example:

LS2 (Low temp):
Active - 158F (or whatever </= 183F)
Off Below - 183F
On Above - 194F

LS9 (High Temp)
Active - 189F
Off Below - 183F
On Above - 194F

Both fans will still initially turn on togther at 194F. Once the temps start dropping LS9 will deactivate at 189F and LS2 will only deactivate below 183F. If LS2 can't drop the temp solo and it creeps up above 189F again then LS9 will activate seperately (just like you're after).

Now ya get me? Now if I missed something I'm all ears. What are your settings to get them to activate initially at two seperate temps? My guess is while both of your LS's have "Rad Fan" checked one of your fans isn't set to go active until above the Rad Fan "on Above" temp and is therefore operating without a true buffer; and as such the Rad Fan function isn't doing jack for that output and can be disabled.

[cjbyron]

I shake my head along with you (WTF?)

Yes, I KNOW there is only the one function "rad fan" function. It's sort of right there in the program. I'm not new to AEM.

All I was saying is that under the stock setup for the AEM there are two separate LS controls for the two fans. Not just one. And yes, only one of them enables the "rad fan" function in the lower screen. All you have to do is look at the stock startup map to see that only one fan has that enabled but has a different "at least" in the temps. There is ony the one setting for off below (function) but the on above is similar in the LS settings by being the "at least" setting.

Or perhaps we are saying the same thing. It isn't "my" settings but instead I reverted BACK to the stock style settings which does indeed turn the two fans on/off at different settings. AEM calls them radiator high and radiator low (pins 20 and 21).

If you open a stock startup map you'll see what I mean. The two fans do not operate together but come on with their own controls (ex: like the high fan coming on with the AC call).

[R/T93]

You guys are AEM dorks.