I had a question about EGTS, I know EGTS increase when your dumping fuel. Today I had a tailgate retard on me, and it was someone I knew so I torque switched it at 30 mpg and layed into it and left a nice 1/4 mile trail behind me to get them to back off. I noticed when the truck was lugged down (switching at 30 just bogs it down) and just rolling smoke building no boost, my EGTs were staying pretty low, rising slowly until the turbo spooled then they shot way up as I built speed, why do EGTs stay so low until the turbo spools

 

Mine the opposite, if Im luggin my EGT's go way up, then once I get it to down shift and turbo spools then it cools down some, also where is you pyrometer sitting at on the manifold or behind the turbo??? if its behind the turbo it reads cooler... since you have a waste gate.

 

no my turbo is non wastegated, the previous owner REMOVED it and welded the housing. I mean if im cruising down the road, 30 mph, let off of the throttle, hit the switch and then floor it, the engine just lugs down, and doesnt really pick up speed it just rolls the smoke. probe is in the manifold.

 

cause you not making any RPMS. heat is made everytime youe engine goes bang right? so if your engine isnt going bang a gagillion times a second it isnt making lots and lots of heat. it when you can rev your engine WAY ou and continue to fuel it WAY hard that your egt will sky rocket because you cant move enough air to cool things down. right now there is nothing to cool down or very little to cool down because there is no fire in her belly.

 

Yeah cause I know lots of smoke at higher RPM is bad for EGTS, mine all clears up fast because of my lack of wastegate, I try to govern her with my foot and not let her get past 35 psi, but she can boost almost to 40 if i let it. Whenever I get a tailgate retard I like to let it roll on them and I watched the gauge close last night, just wanted to make sure I wasnt burning nothing up doing that. I dont think its hurting my trans either, would it? I make sure I let out of it before the turbo spools because I know that will slip the trans. Anything bad about lugging it to lay a cloud with a close to stock trans (billet converter I believe) with a switch?

 

yes you are in a high gear and your engine is fighting to make power, what is the weak link... your prolly fine but there are forces at work