170 t stat

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LokiWolf

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Typical Platty style

What, No comment on the Idiocy of your Service Writer’s statement and the fact that he obviously has NO IDEA how the cats work. The fact that engine temp would have very little to do with exhaust temp in a Turbo’d vehicle.


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JExpedition07

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What, No comment on the Idiocy of your Service Writer’s statement and the fact that he obviously has NO IDEA how the cats work. The fact that engine temp would have very little to do with exhaust temp in a Turbo’d vehicle.


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I’d venture to say you’re correct. And then again turbo or not, I don’t think the thermostat will effect the Catalyst system. When I start my 5.4 on a cold morning those cats get right to work and are the first thing hot. They run at what 2,000 degrees? Changing coolant from 180 to 160 isn’t going to change that......combustion temp in the chamber and the exhaust isn’t any colder just because the block is.
 

LokiWolf

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I’d venture to say you’re correct. And then again turbo or not, I don’t think the thermostat will effect the Catalyst system. When I start my 5.4 on a cold morning those cats get right to work and are the first thing hot. They run at what 2,000 degrees? Changing coolant from 180 to 160 isn’t going to change that......combustion temp in the chamber and the exhaust isn’t any colder just because the block is.

Yep. My point. I know I’m correct. Didn’t make the statement with any doubt. Turbo Motors heat the cats even faster in most cases, especially when under load.

Edit: That sound a little harsh. Just getting frustrated with the fact that people are taking the average Ford Dealer Service writer as gospel when in general they have proven to be clueless. I like my Service writer, because she doesn’t make moronic statements and does her homework. The previous one got fired, because he was an IDIOT.


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JExpedition07

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Yep. My point. I know I’m correct. Didn’t make the statement with any doubt. Turbo Motors heat the cats even faster in most cases, especially when under load.

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Here is further evidence of my claim for anyone who wants to read up on catalyst systems. Catalytic Converters reach operating temperature before the engine itself does:

https://www.explainthatstuff.com/catalyticconverters.html

“One problem is that they only really work at high temperatures (over 300°C/600°F or so), when the engine has had chance to warm up. Early types of catalytic converters typically took about 10–15 minutes to warm up, so they were completely ineffective for the first few kilometers/miles of a journey (or any part of a very short journey). Modern warm up in only 2–3 minutes“
 

LokiWolf

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Just a quick question from one who has an absolutely stock '15 XLT...What does "running on the track" refer to? Why and where?...Thanks!

1/8 and 1/4mile, or stop light to stop light...of course in Mexico.

These EB powered SUV’s are actually pretty fun to go embarrass much smaller “quicker” vehicles! The problem is heat, this lower Temp earlier opening TStat helps decrease heat soak, and allows the cool down to happen quicker so you can make another run!


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16plati

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170 t stat successfully installed tonight while at work. 2 long hours start to finish and that’s with downloading and flashing my revised tune. So here it is:

Typically once engine warms up and you drive about 5 miles and let it idle, the ECT get to right about 216 degrees F when the fans kick on temperature drops. That’s at idle, pre install.

Completed install, topped off coolant since I lost a bunch, flashed the revised tune, turned it on, heat full blast and got it to 2800 rpm off idle in park. Temps got to about 178-182 and then I took it for a quick spin to get the temps up. Brought it back, parked it, was at 174. No heat, at idle, temps got to 190, fans kicked on (now 26 degrees sooner), and temps dropped back to 160-170s. I’m very happy and would recommend this to anyone with an aggressive tune that likes to have fun racing other cars and trucks in an SUV. I have also been advised doing this mod with no tune will do nothing as your factory fans will still not kick on until high 200 teens
 

JUST4FUN

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What, No comment on the Idiocy of your Service Writer’s statement and the fact that he obviously has NO IDEA how the cats work. The fact that engine temp would have very little to do with exhaust temp in a Turbo’d vehicle.


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It was just a quote from a service writer that I have known for a couple of years
 
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