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Discussion Starter · #1 ·
Well i have had the high idle in for 2 weeks now, works well, however I'm not seeing much of a difference in warm up time really, i have the attitude so i get LCD EGT temps and engine temps, basically on normal idle at cold startup (40 degrees outside) the truck is at about 240-250 degrees EGT ,when kicking on the high idle (1200 rpm) it goes up to 260-270 tops. What are others getting for temps??? seems like the additional 20 degrees of EGT does not really increase warm up time very much in my case, going to 1800 rpm high idle gets me about 280-285 on the EGT, surprisingly even at the 1200 rpm idle it shows about 2.6 psi of boost, the 1800 is about 3.4 psi!!! if my motor temp starts at 50ish degrees (off the attitude) in 40ish degree weather it takes about 8-10 minutes at 1200 rpm to get up to 100 degrees engine temp. Is this about what others are seeing?? Wish i had a plug in at work, it nice plugging in at home and starting the motor in the morning at 120 degrees!!!!!!!!!!
 

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Discussion Starter · #4 ·
IMO I beleive EGT temp is directly related to how fast the coolant warms up, higher EGT = higher cylinder temp which equals greater heat transfer to the coolant which warms the engine faster. I cant see how running it at a faster rpm would build heat faster if the EGT stays basically the same??? Honestly i thought when doing the high idle install i would see at least about a 50-75 degree increase in EGT which would help warm up some more???
 

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Discussion Starter · #7 ·
I have noticed on my truck also that at full temp in 30 deg weather at idle regular that it will indeed drop temps also and go below 180. Your truck runs at 190 degrees? The highest i have seen my engine temp ever is 187 degrees, of course it has not been over 50 deg since i have had the attitude, but basically cruising down the interstate at 70mph or even around town it will run between 181 and 183 degrees all the time.


I'm also amazed at how much engine heat is lost when shutting the engine down in 50 degree weather, if i go to a restaurant to grab a burger or something maybe 10 minutes tops the truck is off and its already back down in the 160 degree range and takes a few miles to get back to 183.
 
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