nate4567

I am looking for a EGT range that I should be running with a stock truck. I pulled a 22 foot boat over some passes right around 10,500 in elevation and was seeing alot of 1400 and it stays there from 5 min to probly 45 min depending on the pass. My boost gauge says that I am running about 30lbs of boost ( is that right) . I do have a bully dog, but it was on no addition power setting and I have a straight exhaust. Does this sound like it is resonable or is that to hot

BIGDAN65

1400 is not too hot for short runs but for that amount of time i would say you are testing your luck

ptgarcia

I'd back out of the throttle a bit. I'll let my truck see 1400* for a few seconds, but not for minutes. On a 45 min climb I'd like to see less than 1300*. You need to either slow down or upgrade your turbo.

rich

try your bullydog on tow you should see a decrease in the egt's

nate4567

So i guess i need to ask why you need more air to cool the egt, on a gas motor if you are running hot you are running on the lean side and gas will cool the mixture, same being in an air plane. You find max egt and run 100 degree rich to get max safe power. I am not doubting you I just want to understand why more are would make it run cooler. I am not pro but it seems like to me you would need cut the air back so the computer would cut back the gas resulting in a smaller fire.

I have read that alot of people say the bigger turbo will cool down can anyone explain this a little better

thanks
nathan

nate4567

also i dont maybe it is the gauge also. My ideling temp is around 400-450 and my unloaded cruise is around 800-1000 at 65

paroxysym

that actually sounds about right... my cruise temp is around 600-700 but i contribute that to the smarty. but for a stock truck those numbers are pretty average.

ptgarcia

Those temps sound about right. At least they coincide with my '06.

Diesels make power by burning more fuel. Mash the throttle and more fuel is injected. The turbo then responds and tries to push enough air to meet the fueling demands. A stock turbo can only move so much air. With stock fueling its enough. But with your Bully Dog you're now dumping more fuel than your turbo can support, and higher EGTs are the result. A larger turbo will move more air, and most likely move that air more efficiently, and keep temps in check with that added fuel. Make sense?

nate4567

that part makes since but my bully dog was not changing anything, with it on the no additional power setting. I was under the impression the stock settings would not produce enough heat to hurt itself minus of course the tranny heat, otherwise they would give you a gauge from the factory. That is why I am surprise they everything thinks that is to hot. I was thinking that maybe it was differance in gauges. So i guess the question is, can a stock truck make enough egt to cause problems. Like I had a Chevy Dually with a 454 and the egt was never even thought of. It was stock and it can take it as long as the engine in self doesnt get hot. And with that proablity you get a gauge. That is the way that I thought it worked. Now if it matters this is acually the turbine in-let temp just like every one on the fourm wants it to be done

thanks
nathan

ptgarcia

Stock trucks can get hot EGTs. I saw 1400* once when stock, but that was when I was seeing how fast I could pull my 9000 lb travel trailer up that long grade outside of Needles, CA on I-40. It's around 7% for around 10 miles and usually hotter than hell through that area. But EGTs in the 1300s are normal with moderate loads when climbing hills.

no_6_oh_no

Idling after driving for a while, on a cold start, warm start?

Temps sound high for no extra fuel, both the idling and empty cruising. I run less than 800 all the time empty at 75 mph, even with the Smarty fueling extra.

What trans do you have?

seattlestones

I am running the Edge w/ Juice and I have it set to start de-fueling at 1350. I have never exceeded this. I read in a techno-bulletin that you will actually start melting the crowns of the pistons if you sustain anything over 1400. Don't know if that 'fact' or 'fiction' but that's my bad joo-joo point that I stay away from. If your Bullydog isn't set up to do this automatically.....you need to take your foot out of it. Juts my $.02.

rich

my stock 07 was seeing 1400 and more dragging a trailer when i was on the stock setting . when i had tried the the bullydog tow setting the temps dropped several hundred degrees. doesnt make sense but this is what happened dont know if was the fact that it didnt need to work as hard or what. it had an afe filter and a straight pipe. as far as burning crowns at 1400 they dont have a motor that saw 1500 temps before other issues caused problems and they were fine

ptgarcia

My truck idles around the 450* mark when in gear and cruising at highway speeds varies from 700*-900*.

nate4567

my tranny is the stock 48re. after I let my truck cool from a trip around town, no hot rodding I can barley get it down to 450, i would say like 465 or 470. My normal temps are around 800- 100 around town.