xp8103

Whats the diff besides the temp?

Mcmopar

How quickly they respond.

xp8103

To what?

Mcmopar

Temperature changes in the gas stream, prior to the turbo you see the changes faster, and as you mentioned, they are higher.

infidel

Pre turbo is better on a modified truck since temps can rise faster than the a post turbo gauge will respond.
Though folks sometimes worry about a probe falling apart and damaging the turbo I haven't heard of even one case of it happening. By the time the probe falls apart the turbo is the least of your worries.
Pre-turbo is the only way to go.

caleb c.

I agree,I would rather take the chance of having to get a new turbine wheel than not really knowing how hot it really is.I have never heard of one coming apart either.Its a little more work to go pre but its really easy.

4RGSP

The material the probe is made of is K monel. This is a material that is used in heat treat ovens that range in tempatures from 1700 degree f to 2100 degrees f. They last for a long time at the high temps. The probes don't breakdown they just quit working.
I don't think there will be any problems with breakdown in pre-turbo with the temps these engines run.

Saxet Nomad

Had it both ways...PRE turbo is the way to go...the safe temps for post turbo given anywhere are only best guess estimates...and change when you make any modifications...

Kyle Graham

Pre turbo 100% why would you want to guess what your temps really are?? pre and post can possibly differ 400 fahrenheit

xp8103

Well I guess that was my question. I see that you can buy post-turbo EGT gauges..... Couldn't figger out why.