Using both egt and afr readings to tune?

[cbustuner]

I would like some insight on what to look for and cause and effect of egt readings when tuning.I have the whole afr concept down,but have never used egt readings to help tune so what should I be doing/looking for?I just installed a new cam/turbo/manifold&downpipe so I need to do a retune anyways and this is a good chance to learn. examples.. What general egt readings should I be looking for at idle,crusing,low load and wot under boost? what effect does ignition timing have on egt's? could I use egt readings to help tune ignition timing and if so how? what effect does afr have on egt's?

[Bugermass]

What you are asking, has a very ambiguous anser.. There are so many variables that can affect EGTs, that it would take a few pages to explain them all.. Your best bet is to just do alot of searching on the subject and combine the infomation to give yourself a good starting point of understanding, then learn the rest by experimenting, compare spark plug readings with different EGTs and A/F mixtures and amounts of timing, \"ON A DYNO\" that is the best way to learn.. Its a usefull tool but the results are very engine/setup specific..

[Bindegal]

I have spent some time logging EGT with eCtune , so I have a bit of practice. First of all, I feel that for EGT to be a useful tool, the car must be properly tuned in the first place. Tune for which ever AFR should be right for the setup and MBT on the dyno. Then look at your EGT´s... For a street car I can use EGT to figure out the safe AFR during cruising. This is usually where I see the highest temperatures. So use it to tune the tables, as well as the maximum load for closed loop. Also I use it to see if lower AFR could be needed to cool things down a bit during WOT. Naturally EGT will also show if you´re running (far) too little timing. But in my opinion, this should be MBT tuned already on the dyno. An interesting thing is, that when I log a long session on a race track (10-15 minutes or more) in my old racing CRX, it becomes very clear how all temperatures slowly climb up. EGT and ECT slowly build up. This is something to watch out for, if the car is used for trackdays or endurance racing.

[RoadXY]

Is this intresting for an DD and is it possible for eCtune to anticipate on the high EGT's?