Post turbo EGT?

[ABlades]

I recently installed BDTD with outlook on my 06 3500DRW 6sp. I mounted the pyro post turbo. What are safe temps with a post turbo pyro?

 

[Bertram65]

Depends on which 3rd gen you have, 900 degrees is a pretty safe number to stay under. You can call Cummins and ask them, that is what I did, they reconmend post turbo for the probe, for my '03 they said 900 degrees.

 

[ABlades]

Thanks for the info. I set the truck to stock and ran it hard and got up to 1220 on the post pyro. The truck runs 650-750 @ 55mph unloaded. I have heard 900 from other people too but it just seems really low condsidering I can run 1220 in stock.

 

[ABlades]

Sorry, 06 5. 9 Motor

 

[WCounts]

That seems a bit hot. I'm running close to those temps at 75 mph pre turbo. I would not run it up to 1220* any more. You may have a problem with your pyro or the tune of your motor. You want to check it out before you do some damage.

 

[Dieselnerd]

My motor is stock and I plan to keep it that way. I have my probe post turbo, mainly to monitor cooldown. Towing up a long grade in hot weather it will get up to 1200. Since it's stock and under warranty, I don't worry about it. Normally it runs 450-600 unloaded in warmer weather. I have never seen it over 800 empty, I have to be towing uphill to get higher than that.



Depending on the year of your truck it will vary. 2003 and 2004 will run cooler, 2004. 5 and beyond have the third injection event. This heats the exhaust hotter and helps the cat converter work to meet emissions.

 

[Bertram65]

Highest I have seen on my '03 is just over 900, that was at about 5000' towing 10k up a long grade.

 

[DPKetchum]

I've seen over 1000 towing 10k and over 1200 non towing but I won't say how.

 

[Smokin Joes 2500]

Ive seen 1500* pre turbo so 1220* doesnt surprise me

 

[CStraface]

I see 1000* daily pre turbo. I've only spiked 1400* once. But for a few seconds. Who's counting anyway :-laf

 

[JCasper]

I just recently moved my probe from post to pre turbo. Post turbo stock I would see over 1000 empty pulling hills in 6th gear. At 21K lbs gross up the same hills but in 5th gear at around 55mph I would only be running 850-900. All this is with the truck stock.



Now with the Smarty running on level 5 I have not towed. On a uphill acceleration on my way to work I would see 1100 post turbo before 80mph.



Now that my probe is in the manifold I see 1500 on the same hill same driving style. My gauge stops at 1500 so it could of gone more.



I would say though that 1220 post turbo is way to hot for a sustained amount of time. I believe from what I have seen cummins says 960 sustained post turbo.

 

[ABlades]

Thanks guys, I guess I will be mounting a pre-turbo pyro also so I can get more accurate numbers since my figures seem to be a lot higher than everyone elses. I don't understand it, I can pass 1000 with the programmer in tow mode without even pushing it hard. Bad pyro? False readings? Does this happen often or are they always pretty accurate?

 

[Smokin Joes 2500]

Thanks guys, I guess I will be mounting a pre-turbo pyro also so I can get more accurate numbers since my figures seem to be a lot higher than everyone elses. I don't understand it, I can pass 1000 with the programmer in tow mode without even pushing it hard. Bad pyro? False readings? Does this happen often or are they always pretty accurate?

I can send mine to 1500* quicker than a Stroker guy can wish upon a star for a real engine Dont hold it there long though or Ill be picking up dropped valve seats or something awful like that. Its huffer time for me, just need to save back a little more money.

 

[JCasper]

Thanks guys, I guess I will be mounting a pre-turbo pyro also so I can get more accurate numbers since my figures seem to be a lot higher than everyone elses. I don't understand it, I can pass 1000 with the programmer in tow mode without even pushing it hard. Bad pyro? False readings? Does this happen often or are they always pretty accurate?

I don't know how often it happens but my pyro just went bad. I have the replacement sitting in the garage now.