Anyone running 2 EGT probes in their truck?

If so, please post the locations that you've chosen.

The reason I ask is that I have fitted one into the end of the exhaust manifold to run a gauge, and am thinking of fitting a second probe post turbo for an Edge CS scan-gauge.
Is it worth the trouble/$130 for the 2nd probe?

Any thoughts welcome.

 

I would put it in the other manifold before I put it in the down pipe.

 

While going post-turbo would answer the question of "how much does it cool down", that information serves no purpose.

Now... get a malfunctioning injector, a bad UVCH, or a clogged fuel nozzle on one side - having a pyro on each manifold will tell you instantly there is a problem and where it is.

 

Would you then be expecting them to always read the same?

Second location I am thinking of is the EBPV blank of my EBPV deleted turbo outlet so as to measure the EGT pre and post turbo.

 

Pre and post turbo is useless, just a waste of money, it will tell you nothing important. One on each exhaust manifold would be a great diagnostic tool. Your choice!

 

Thanks for your responses.

One and the end of each exhaust manifold, and now I know why!

 

Running dual gauges (one in each manifold) has helped me in a few times. I highly recommend it to anyone

 

So, drilling the RHS exhaust manifold for a EGT probe.

Does it matter where abouts the EGT probe hole is located?

The reason I ask is that I've had a roll around under my truck & reckon I can just fit my power drill between the frame and starter motor, so the tapped hole I can make on the RHS will be a little further away from the manifold end than where I was able to tap in the hole on the LH exhaust manifold.

 

I would think that if it is placed where the gasses from all four cylinders have to pass by, that would be the only real criterion for determination (other than your mentioned accessibility).

Pop

 

I'd guess it is better to have both the same distance from the exhaust port, but as long as both are in the manifold it should register about the same. Prolly not even see a difference unless the display is digital. I'd pick the most accessible spot in case you need to get at it again some day.

Other than the Edge monitor what do folks use for gauges? Two separate gauges seems awkward. Found a Falcon ER-002 which looks similar to a $$ Westach unit, but are there other options?

Edit: D'oh! Pops sprang too quick for me!

 

I've seen upwards of a 200 degree difference between pyros. Most of the time they are within 50 degrees of each other. I have a cheapo pillar mounted down low with a pyro in each side then the boost in the center and it works well

 

I know this is an older thread, but as it's the same question, I was wondering what people thought about using the two bosses located on the exhaust collector behind the turbo, instead of down on the manifolds. I have it out for other work, and while she's out it's really easy to drill holes on the drill press.

 

With my experiences, I "vote" always on the exhaust manifold outlet.

 

But my exhaust manifolds aren't hanging by a wire waiting for paint to dry. I'm running all stock components with respect to power, any upgrades I've done are for reliability. I don't expect to push the engine beyond any normal loads, it's pleasure use only, so the probes would be informative in nature and not to try and get close to any power limitations. Not even running a tuner here.

Mostly I'm wondering if people have had any issues with this location, like the baby's butt cracking, or whether probes here are to close together, so the readings are not distinct.

 

With respect and a friendly tone: The manifold outlets are only slightly less convenient to install a probe on - it's not like you have a clearance problem on a stock-height truck. If you go online for technical support in the future, one of the questions will likely be "What are your EGTs?" You'll tell them your probes are not on the manifold and the forum will shrug - because we won't have a frame of reference. I would (and have) put them where they are the most accurate and everybody has a frame of reference for your support.