Egt help

[dflaugh]

I've been searching and reading lots of posts trying to get my new to me 04.5 up to speed for my usage.It's the first time I've had an auto so there is being a bit of a learning curve.I got the mystery switch and fan override switch installed last week,really helped out this last weekend.I towed about 6000 lbs. to near Silverton,CO over 3 passes 10,000 ft plus.Everything did well but EGT's wanted to climb beyond 1200 pre-turbo .On steep climbs it would shoot to 1450 and I would have to down shift to 2nd and back way off to keep it at 1200.I felt the power was there ready to go but I couldn't use it.I've got the Smarty Jr. set at 75 POD,power 1,torque 4,timing 3.What are reasonable EGT levels for 04.5?I read one posting saying 1550 was expected for this engine,that seems scary to me!Where do I go from here to get them lower?Thanks for your input!

 

[jhenderson]

4.5 and up can see a steady 1400 degrees without danger of engine damage.

 

[cerberusiam]

You could go to 1500 degrees with a 600 engine with STOCK fueling all day with no problem, not with that much timing though.

You could PROBABLY run 1300-1400 2 minutes out of 5 and be pretty safe. A lot would depend on how good of shape your injectors are and how much air it is pulling. Limiting the time factor of high EGT's is the key to keeping it in one piece.

 

[dflaugh]

sounds like I'll be ok doing a quick pass,the injectors are new BBI stage 1 100 hp.Don't have any modes for air flow yet,thinking thats where I will need to go next-suggestions?Thanks for the EGT info.

 

[Bob4x4]

Really you expected to add 150 hp and not do any air side upgrades abd at high elevation?????

 

[dflaugh]

I,m working on upgrades a bit at a time,feel like I have power turned down and am driving carefully,haven"t had it all the way to the floor yet.Need suggestions on where to go from here.Planning on having this truck a long time.

 

[cerberusiam]

sounds like I'll be ok doing a quick pass,the injectors are new BBI stage 1 100 hp.Don't have any modes for air flow yet,thinking thats where I will need to go next-suggestions?Thanks for the EGT info.

Yep, that would drive EGT's pretty well at altitude. For towing, altitude and all around performance compounds is the answer. Spendy option but the best one available for broad use.

 

[p-Bar]

I would be also concerned about transmission , stock won't take the added HP and torque . Be sure you use the Tow/Haul mode as it will keep it out of OD and change your shift points .

 

[dflaugh]

Compounds might happen in the future,I'm thinking transmission may need to be addressed first.Air box mods worth doing?I'm thinking more cool air to intake would help.As for the trans should I add some parts now or wait and do a rebuild.Trans seem to be doing fine now,I have no idea if work was done before my purchase,truck has 178 k on it now.

 

[cerberusiam]

A cold air inlet on the air box is worth doing. I would make it so it is closable for winter use.

If you want a soild transmission left to rebuild it could use some parts. Specifically a shift kit to ramp up pressures and the front band control pieces. 2nd and 3rd gear are the weak spots of a stock trans and take a beating from the TQ.

 

[dflaugh]

I've never worked on internals of an At trans before is this something I could do with the service manual in front of me.I might be able to round up a friend with some know how.If possible maybe some part #'s and supplier,also in a couple TDR issues saw your recommendation on governor solenoid and transducer,should I do that also,parts cost seemed minimal thanks for the input!

 

[cerberusiam]

The GM style gov kit with harness which is not a bad idea http://www.electricaladvantage.net/rehdmasterelectricalkit00up.aspx



These are the pieces you need plus a shift kit. That gets to be a harder choice but the Superior shift kit is pretty easy to do and not as involved as others. These can all be done with pan off and just the VB out.

Billet front servo cover
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Billet accumulator
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Billet band strut
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Band anchor
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[dflaugh]

I need some help on part #'s and sources,the link you put looks good I will do that also.I'm planning on doing the Home Depot cold air also,still thinking on just how I want to do it we drive a lot of dusty roads and picking the air up higher seems like it would be better

 

[Gonzo 1066]

My 04.5 was quite high EGTs as a stock truck often in the 1450 range on a hard pull in dry air at elevation. I installed a AFE air intake (would not reccomend them) and a Industrial injection Silver Bullet Pfatt Shaft 62, along with a AFE manifold, Banks Technica cooler and elbow.. with Industrial 100hp injectors and EDGE attitude. On the same hard pull EGTs are seldom above 1250 now.. Other than switching to a Volant dry airfilter (that I do reccomend) there have been no other changes. I am very happy with how this truck works for me now.

 

[cerberusiam]

This place has about everything you need. The web page is long and hard to serach but it is all there.

Serach the page for these number; #22-48RE, #3SC, #3A4, #4BS, #4BA

The air filter gets to be problematic when in dusty conditions. The mods that pull air from the wheel wells pick up a lot of dust. You almost be better off with a BHAF and Outerwears pre-filter in the front corner away from the dust.

 

[dflaugh]

cerberusiam-I'm not seeing the web sight info on that last post,part #'s yes.Also what is a BHAF,thanks

 

[cerberusiam]

Well, helps if it past the link. http://www.transmissioncenter.net/dodge.htm

BHAF equals big honking air filter, something like a Fleetguard AH19037.

This is one way to do it.

#ad

 

[dflaugh]

Found the web site have parts on order for trans.Looked at the Banks Techni-cooler package,good price wondering if anyone has used one for 2 years or more.

 

[cerberusiam]

I think you would be better off spending the money on a turbo than the Banks package. For about the same price you can get yourself a better flowing turbo than the stocker that can then be used in a set of compounds. More band for the buck there.

 

[AH64ID]

4.5 and up can see a steady 1400 degrees without danger of engine damage.

Not very good advice for a guy who said he is running a tuner. The 04.5-07 can handle higher EGT's with STOCK tuning only, add some timing and those temps are not safe for towing. Despite their higher EGT's the 04.5-07's run cooler cylinder temps so the pistons aren't seeing the heat, the exhaust is. As you add timing the temp moves from the exhaust to the cylinder/piston so a truck with decent timing will run higher cylinder temps at 1250° than stock timing at 1450°, just food for thought.

The 04.5-07's have the weakest and easiest to melt pistons ever used in a 5.9, trying to run stock EGT's with timing is a quick way to melt them.

sounds like I'll be ok doing a quick pass,the injectors are new BBI stage 1 100 hp.Don't have any modes for air flow yet,thinking thats where I will need to go next-suggestions?Thanks for the EGT info.

With a stock turbo and BBi's there isn't much you can do to have full power and good EGT's, that's just way too much fuel for that turbo. I am running BBi Stage 1's with a slightly larger turbo than stock and have my fuel dialed in well below stock and still make 415rwhp and depending on rpm and ambient temp I run out of air for full power around 5-7K feet elevation. Even a Smarty Jr on SW1 will make more power than I am, the HE351 just cannot keep up.

You should really look into custom tuning with UDC, it will allow you to take full advantage of your entire setup. With those injectors you need more timing tuning than SW1 has, but to get that with the box tuner you would have to run more fuel than you are now.. so more heat.

Found the web site have parts on order for trans.Looked at the Banks Techni-cooler package,good price wondering if anyone has used one for 2 years or more.

There isn't an intercooler on the market that will fix your EGT's, the stock one is plenty for your airflow levels. As long as you are moving the IAT's post-intercooler are only going to peak at ~40°F over the ambient temp so even if you get them to ambient temp, nearly impossible, you would only see about 50-60° lower EGT's.

Your options are really a bigger turbo or custom tuning. Water/Meth might work, but I prefer tuning and airflow for towing as the water can run out on a long trip.

UDC with the Smarty Jr is a good setup, one step higher would be selling the Jr for an SO6 and getting UDC with the S06 for better rail pressure mapping.

I would change your tuning up a little thou. SW1 TM2 TQ1 PoD90. The PoD at 75 will not effect your mid range fuel/torque but it will effect how your transmission shifts. I don't recommend PoD below 90 for auto transmissions. I have dyno'd the Smarty Jr and at PoD70 the hp/tq was the same as PoD99 up thru about 2300 rpms.


The Home Depot CAI is a good mod, as is a Airaid MIT, and a intake horn (I like the Glacier). None of them will do a lot in terms of EGT's with your setup, but they will help most at altitude on throttle response and mid range airflow..

General rule of thumb for EGT's on the current SJR tuning TM2.

1250° continuous, 1300° momentary

If you want any more UDC info just let me know.