EGT, how hot is too hot, and what can be done

The coolant that cools the cac is thermostatically controlled so an intercooler upgrade isnt going to make much of a difference in cruising egt.

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Possible to lower the stat in the cac system to make it more effective? No idea here just curios.


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Maybe. But there's more to the secondary system than just the cac so I probably wouldn't mess with it, it is pretty efficient how it is.

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Six_Sloww said:

Maybe. But there's more to the secondary system than just the cac so I probably wouldn't mess with it, it is pretty efficient how it is.

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Makes sense. I don’t have anything done to mine nor an aftermarket intercooler. I was just curious.


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so, seeing peaks of 1500 and cruising at 700...seems about what stock did...what did I get for my thousand bucks? more airflow?

Absolutely, the core flows way better and the upgraded intercooler does transfer heat much more efficiently, so although cruising temps may not be affected, under high load the intercooler will absolutely remove more heat as long as the secondary system can remove the heat from the coolant.

Using coolant to remove heat is extremely efficient, a2w intercooling is an extremely efficient process but using air to remove heat in the heat exchanger is far less efficient.

It may not be as apparent on a stock truck but I can tell you that NL CAC is a big improvement when you start getting into aftermarket chargers and fueling upgrades.

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I'd say your expectations for IC performance are being negated by the tuning profile. For my setup it's hard to see anything significant over 1000*EGT while holding 30PSI boost. Getting to 80+MPH is pretty easy without needing WOT.



There are two tstats on the secondary system. On the right side it's 140*F, and the left at 113*F, left controls the flow to the IC. I'm hoping to see what the summer brings since I added a Edge IAT to my MidWest piping. Currently I see a regular re-occurring delta between OAT and post-IC IAT of 15-25*F. So IAT/OAT of 80*, post-IC IAT will read 95*-105* depending on driving situation.

So if...the tuning profile that Tyrant is offering isn't optimized, where/who can I get an custom tune?

trick, you have the full intake piping installed with those egts?

Yes. Intake, full pipe kit, big intercooler, bypass egr and CCV d3lete all into a aFe 5" w/ muffler.

your numbers(temps) are almost identical to mine