a few more questions if i may stu (and to karl if he's reading)

i'm in the process of installing EGT thermocouples into my exhaust manifold. i've got 4 inconel probes, is it worth using all 4 (one for each cylinder), or just one?

obviously 4 is better, and if i get an ecu that allows individual injector trimming i will be able to get the best out of the engine. but the question is, as an inexperienced tuner should i be approaching these limits?

and at what temperature should i start to get worried?

if i'm using a WB lambda sensor to setup the fuelling, and set it up to, say, 12:1, what will cause the EGT to rise to dangerous levels?