6.4 high egt's w/ h&s, 4x4, and tire sensor

[rater1979]

Ive got 3 questions...maybe you can help...?

I finally make it to remote road near my house and want to see what the truck will do from a boosted launch with the hot damn tune. Build boost to about 5 psi and take off ....and the mini starts beeping at around 70 mph. Check it and looks like im defueling because pyro 1 temp. reached 1450. This was what the mini was pre set to when it arrived. I have stock exhuast with dpf/cat delete & s&b intake.

1) Is it normal for temps to get this high? How accurate is the reading on the H&S mini because the tire size adjustment is no where in the ballpark according to my gps?

Go to engage 4x4 and Im hearing morse code light clicking sound through driver side a/c vent, even louder while holding brakes -maybe vac. line is loose that activates 4x4?
2) Any suggestion on what and where to check?

Out of the blue on my way home from Houston to Ft Worth-I get dash light saying tire sensor fault. I just had new 35's put on about 2 months ago...I know i have plenty of air pressure...Just dont wanna spend half a day of my time replacing dpf and intake to make it look stock.
3)Anyway to isolate the problem on which sensor is bad?

Thanks in Advance~

[superdutydixie]

bump for ya

[ThirdCoastStroker]

as far as egt goes...yes thats normal i have the same setup juts with afe intake, when i wanna run a 1/4 mile or let it go wide open i raise my boost defuel to 55 and my egt defuel to off...just a few seconds at 1700 degrees is ok you just dont want it running that high when towing down the highway...as for the rest idk

im sure someone will chime in on this topic

[Delta Jim]

My '09 has the Tire Sensor Fault as well... others do to. Been too busy to see the dealer over it but other have without success. In my case, all sensors respond normally to reset/sync then will fault off and on as I drive long distances.

Another TPMS thread ....

Jugernaut provided some good info in this thread... dealer needs to be engaged.

"Tire Pressure Sensor Fault" - how to isolate which sensor?

[CowboyCody]

wow, i dont think i would want my egt's over 1450!

[GamblerHydra]

For short burst and quarter mile etc it is safe getting your EGT that high . You just do not want to do it for long periods of time.

[CowboyCody]

i dont think you would want repeated exposure to that temp either. once and awile to test it out, or race is one thing. but on a daily or even weekly basis i would think there would be some long term effects, but maybe im too careful or conservative. or possibly its because i cant afford to fix stuff when it breaks

[ThirdCoastStroker]

cody on thes newer rigs with the DPF systems they are built to withstand the higher temps, because weekly when you have the dpf system still on and it goes into regen your egt's will exceed 1400 degrees easily

[CowboyCody]

Wow, thats good to know, that must be a tough mother! to withstand on a regular basis what would melt down most. i am kinda growing fond of the 6.4 maybe when my 7.3 is wore out i will buy one! i think they did some good things there and learned some lessons before they built it. maybe it will be another 300,000 mile motor!?