After installing my EGT guage I can get my EGTs down to less than 400 in literally a matter of seconds. I realize getting a Cool down timer was putting the cart before the horse but I wanted to do all my guages at one time and it set me back many $ and much time. I really see no need for it other the the convenience aspect which is, of course, a good thing. Opinions please.

 

I know what you mean and it is convenient for this. Recently I have been just leaving the key in and doing short stops where I can keep an eye on the truck

 

Getting in the habit of using your cool down timer would be a good thing. My EGTs drop to 275 in a matter of about 20 seconds at idle. The problem is heat soak. EGTs may go down quick, but the metal parts that make up your exhaust and turbo housing are much hotter. After you turn off your truck, the heat from those much hotter parts will transfer to the bearing housing in short order.

This is right out of the Dodge Service Manual:

"The most common turbocharger failure is bearing failure related to repeated hot shutdowns with inadequate “cool-down” periods. A sudden engine shut down after prolonged operation will result in the transfer of heat from the turbine section of the turbocharger to the bearing housing. This causes the oil to overheat and break down, which causes bearing and shaft damage the next time the vehicle is started. Letting the engine idle after extended operation allows the turbine housing to cool to normal operating temperature. The following chart should be used as a guide in determining the amount of engine idle time required to sufficiently cool down the turbocharger before shut down, depending upon the type of driving and the amount of cargo."

 

Great point!

 

To check if youre waiting long enough to cool down IMHO, let the truck idle how ever long you normally do, shut truck off and watch the EGT guage. If it stays at 300 or below youve waited long enough, if not id wait a little longer IMHO. I used to watch the guage at idle and as soon as it hit 300 id shut it off. One day i glanced at the gauge after i shut off for a few sec. and it had climbed to 375 . So, i learend real fast about heat soak.

 

Why would you want to remove it? I use mine constantly, I expect my hybrid turbo to last a long time because of it.

I am wondering where you placed your temperatire probe, if you get it that cool so quickly my bet is post turbo. If so that is not a true representation of the actual temperature of the turbo.

Just a guess here, as mine takes a minute or two to cool down but I do live in the mountains.

 

I will keep it due to the heat soak issue. One thing I will do is disable the e-brake option. I have mine pre turbo which is the only way that makes sense IMO.