Thread: Pyrometer in a TD5 defender

Standard temps don't matter. The egt limits of diesel engines are very well known. They can only be accurately measured preturbo.
Backing off the pedal is for those with unsafe tunes.

Agreed on unsafe tunes what temp do you get with probe in manifold? Under 750 no problems

Originally Posted by Equalizer

Agreed on unsafe tunes what temp do you get with probe in manifold? Under 750 no problems

I tune for 750c max. My isuzu had no problem with that sustained. Put your own safety factor on that.

So 750 just before turbo 650 just after what's the big deal

Originally Posted by Equalizer

So 750 just before turbo 650 just after what's the big deal

Your 100 degree drop is fiction. That's the problem. It can be up to 300c. That's the problem.

Not fiction 650 is max i get on td5 after turbo. Do you agree The further you get from compression the lower the temp if i was to put two probes in one at manifold one as close to just after turbo as i can i would get one high reading one lower reading the difference would be fairly uniform so a td5 like my mates with a probe in manifold sits at about 450 to 500c at 100kmr and my sitting at 100 does 300 to 350c. One location is no more right than the other you just need to know what your temps normal ly are and if put in before you remap or put a larger intercooler then you can see if temps have gone up or down.

Originally Posted by Dougal

Your 100 degree drop is fiction. That's the problem. It can be up to 300c. That's the problem.

Agreed and proven with the TD5's here boasting identical map, boost and IC.
The only difference was probe location.
The EGT post turbo was more the 200 degree different.

650 post turbo is guaranteed approaching 900 pre turbo.

Originally Posted by Equalizer

Not fiction 650 is max i get on td5 after turbo. Do you agree The further you get from compression the lower the temp if i was to put two probes in one at manifold one as close to just after turbo as i can i would get one high reading one lower reading the difference would be fairly uniform so a td5 like my mates with a probe in manifold sits at about 450 to 500c at 100kmr and my sitting at 100 does 300 to 350c. One location is no more right than the other you just need to know what your temps normal ly are and if put in before you remap or put a larger intercooler then you can see if temps have gone up or down.

Why are you even arguing this? A price fitted after the turbo is a waste of time. The temp difference is dynamic, not at all fixed.