160* T-stat Installed..

[Livernois Motorsports]

One thing that everyone should also remember is that these cars never run what the thermostat temp is. Even stock with a 180, it's not like they run 182-184, they are always well above that due to how much the cooling system has to cool. Likewise, the 160 will likely never run at 162 (as shown above).

The Open loop vs. closed loop debate is based on outdated information as no car made today waits anywhere near 160* to transition to closed loop, the EPA put a stop to that long ago so now manufacturers must reach that threshold at a much lower temp than in the 80's or 90's.

[FoMoCoSHO]

One thing that everyone should also remember is that these cars never run what the thermostat temp is. Even stock with a 180, it's not like they run 182-184, they are always well above that due to how much the cooling system has to cool. Likewise, the 160 will likely never run at 162 (as shown above).

The Open loop vs. closed loop debate is based on outdated information as no car made today waits anywhere near 160* to transition to closed loop, the EPA put a stop to that long ago so now manufacturers must reach that threshold at a much lower temp than in the 80's or 90's.

My stocker runs 185-193 and the car is in closed loop before I shift out of park.

Heat wise the only issue I can think taking a little longer to get the cabin warm bit I've got heated seats all around and a toasty steering wheel (One of my favorite options!) so I suspect it's a non-issue.

[DJE624]

After a few burps last night, my heat seems to be doing fine. 

[Tomc612]

With 132 miles on the 160* T-stat, I don't see any difference in MPG's. Last night with stage 4+ on my 60 mile trip going 70 and  at times safely 80mph with no traffic, I saw 22.8mpg highway and 19.3 city. Waa!

[Tomc612]

After a few burps last night, my heat seems to be doing fine.

Same here, much better this morning after my little road trip last night.

[explorergotoluvit]

install mine today ill let you all know how is works out for me

[DJE624]

install mine today ill let you all know how is works out for me

Have fun!  Hope it works out good for you!

[mjhpadi]

OK, dumb question, but explain closed loop vs open loop...I'm lost on this...

[DJE624]

It's about the engine staying or returning to a warm up mode.  That's the gist of it.  Tom knows better but at this point we know we don't have to worry about it using 170 or 160 stats in our Ecos.

[SHOdded]

Open loop (i.e. startup) is unmanaged, fuel-rich, polluting conditions.  Closed loop (i.e. running) is managed, fuel-lean, emissions-friendly conditions.  Based on sensor feedback coming in within normal parameters.  O2 sensor feedback is one of the slower ones.  If the O2 sensor were to heat up instantly, you could have practically no open loop condition after startup, except for WOT and failsafe.  Now, if you drive around with a lot of variable input to the throttle, the car will tend towards safety and stay longer in open loop.

[BiGMaC]

OK, dumb question, but explain closed loop vs open loop...I'm lost on this...

It is a startup mode used by the ECU until sensors are working... just a command run rather than adjusted by feedback from sensors (hence the name).  The O2 sensors SHOdded mentions for instance must be warm to function and once feedback begins the engine must reach operating temps for full feedback to the ECU.  It is at least rumored that newer models are electrically heated and so should eliminate the "open loop" ECU operation(no feedback from engine sensors used to modify) for practical purposes and basically always be operating closed loop (receiving feedback from sensors and adjusting)... Thanks DAve, but I'm not a real expert here.

Hope this helps... or just google "open loop auto": or something like that.

[FoMoCoSHO]

My car does not go into open loop at WOT, only when I lift above 35 ish.

[EcoPowerParts]

Car is in closed loop 24x7 except startup from my testing.  Even at wot it's doing fuel adjustment based off o2 and hpfp pressure  info

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[TSS]

Thanks LMS...I was getting worried for a bit because my car runs at 190 and if the stock thermostat was supposed to be 180, I was wondering if There was something wrong. You cleared that up for me.

[FoMoCoSHO]

If the ECT is less than 172 degrees for 300 seconds it will throw the PO128 code.

Pg 123

http://www.motorcraftservice.com/vdirs/diagnostics/pdf/obdsm1202.pdf