EGT, normal range?

obs7.3 · May 30, 2012

I had an autometer pyrometer but switched to stewart warner gauges when I got my 4 pod pillar.
the probe is mounted on the downpipe right before it bends to go under the firewall.
the autometer gauge always read about 800* (give or take) on the highway turning about 2000-2200 rpm.
but now my stewart warner gauge is reading about 600* in the same rpm range.
which one is more accurate?
Truck has stock turbo with a wicked wheel, baby swamps injectors, regulated return (regulated at 65 psi), 6637 intake, 3"downpipe to 6" stacks,
chip was on highway econ setting in both instances.
thanks in advance

JD3020 · May 30, 2012

Cruising my truck is around 5-600*, with the probe in the DP. Really hoping i get time next week to have a work day and get it put in the manifold.

AirFishAutomotive · May 30, 2012

Should be in the manifold

In the manifold mine reads 600 loaded with a 6.0 in bed. Running 60-65 around 2300 rpm

Bobby@cp · May 30, 2012

Move the probe to the manifold.....temps in the dp are inaccurate.

obs7.3 · May 30, 2012

I know it should be in the manifold. but how often do those probes break and cause a disaster?
I do plan on moving it whenever I can find the time I was just curious for now until I can get it relocated.

baderic03 · May 31, 2012

my truck idle is 400* cruise down the highway at 65 600-800* depending on grades no idea what it is towing or anything like that since it dont tow

obs7.3 · May 31, 2012

baderic03 said:
my truck idle is 400* cruise down the highway at 65 600-800* depending on grades no idea what it is towing or anything like that since it dont tow

in the dp or manifold?

baderic03 · May 31, 2012

Manifold

Pstroke96 · May 31, 2012

my truck idles at about 350 and cruises at 65, 1700 rpm about 450-500 and at 80 its about 650-700, according to my isspro ev2's your truck seems to run kind of hot. but mine is stock other than the chip

also ive had my pyro in since last july and about 20k later ive had zero issues, i drilled and tapped in the little flat spot right at the end of the drivers side manifold.

baderic03 · May 31, 2012

You run cooler bc you have a 3.73 or 3.55 gear it seems from ur mph to rpm

Pstroke96 · May 31, 2012

yeah i have 3.55's i didnt think it would make that much of a difference unloaded though

AirFishAutomotive · Jun 1, 2012

Pstroke96 said:
yeah i have 3.55's i didnt think it would make that much of a difference unloaded though

It does simply because the engine is turning more rpm @ the same speed your @ 1700rpm @ 65 mph. Same engine in my 450 with 4.88 rear gear is 2600rpm @ 65

Yodersstrokin96 · Jun 3, 2012

move that probe i run around 700 with my toad at 60 and ~1500 rpm= no boost lol

~NASTYSTROKER96~ · Jun 5, 2012

mines at 350 idle, cruising on flat grade at around 75 is 700-800 and on a good grade around 1000, im runnin 160/100s no intercooler, wildman tunes and autometer ultralite gauges with probe in manifold