My car feels faster when I use the A/C.
Sounds strange but it does!
Throttle seems quicker to input, shifting waits a little longer, and the car runs a little cooler.
My "theory" is the ECU compensates for the drag of the compressor.

So I put a switch on the wire going to the A/C clutch. Then I switch on the A/C button. Of course I then get only outside air. The fan runs more, and it just seems crisper.

Placebo could be in full effect so please try it yourself.

Connector #106 is in the front of the ECU box. Pin #3 on the TOP half of the connector goes to the A/C clutch.

Excuse the giant ugly switch it's temporary until I FIGURE OUT HOW TO GET A WIRE THROUGH THE FIREWALL (hint,hint).

Maybe it's dumb, maybe it's good????

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Maybe it's because I am getting older but I just don't have interest anymore to dig into things like this. I like the xf just the way it is.

If it picks up 1 sec in its 0-60 time then I'll listen.

 

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meh

 

That would be cool, but I guess not come to think of it.

 

passing through firewall. Pull out the ecu and relay CM and you just follow the harness through the passenger side. No drilling necessary.

 

The air conditioning compressor uses power from the engine which is taking power away from the flywheel. Also, as the engine is working harder to run the compressor more heat is being produced. In theory, your theory is flawed.

 

That's what I was looking for. Thanks!

 

Duh, that's what the switch is for!!

 

Did you notice if your rpms sit higher when you have your switch on? If the compresser makes your engine use more power maybe it makes the rpm sit higher. So if the rpm are higher of course its going to be more crips. I like that your trying different things though.

 

The switch is used to replicate the "Clutch Engaged" logic for the ECU, right? The clutch is not actually engaged, right?

 

there is no need to pull the ecu.

on the drivers side there is a rubber plug that you can easily reach that goes right into the cabin. takes about .01 seconds to access.

 

The rpms bump up a little at first but are then adjusted back down to normal in a few seconds (with the clutch dissabled).

I am simply clipping the wire that pulls the clutch. It takes one second to try this yourself. If it's BS then you could reconnect the wire with a butt splice or solder it up w/heat shrink. No harm done.

If anything it makes the fan run full time (although slowly) keeping temps down. Plus no drag from the compressor.

 

I'll look for that.

 

Yo Tuna could it be what you were feeling was the engine management system turning off the compressor when you mashed the gas? Thus the feeling of more power as the load from the compressor is dropped off.
Just wondering....

 

There is also one under the battery. You just take it out and then take out the battery tray and you will see it.

 

Tell the truth I almost never floor my car. Here in the Twin Cities we have nothing but traffic and boring, awful roads. The improvement I feel is at lower throttle openings. Most noticable is when leaving a traffic light. You know like when the light turns green and the mini van next to you gets the jump because your waiting for the throttle to move, I'm pretty happy with the full power output of this car, just not the drivability.

 

No, the switch just opens the wire to the clutch coil. The ECU doesn't seem to notice that A/C isn't working.

 

Sounds like you would enjoy the sprint booster... just a slight tap in 1st and you're on it!

EDIT: Also, make sure you're in sport mode and not winter mode.

 

Are you serious...

 

That was my thoughts... its a little late for April fools