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Originally Posted by sp00ln
No, there are several arguments for the after turbo installation... if you would read the posts. Also, there is an argument there that "why does *cylinder 3* (#1 in the DSM case) run the hottest?" Do you really think it's struggeling for fuel? I doubt it. Every car is different, and I bet that every car's runner can vary in temps from what's the leanest, to whats the coolest. As far as external factors are conserned, you could make the same argument about the manifold too, however, I tend to think once the engine is warm, external factors wont cause a change in temp readings. Besides, the EGT is reading GAS tempretures, not o2 (up-pipe) housing temps. Plus, you should never TUNE with your EGT, a dattalogger is the choice here. And EGT is just a device for you to monitor while unleashing your car on the freeway, and make sure everything is reading NORMAL. If temps DO rise, in any of the runners, you'll be able to tell in your overall egt readings.
However, it seems that steve got the autometer, so *if* he does choose to install it in one of the runners and he's at WOT on the freeway with the EGT pegged at 1600*, how's he supposed to know what his ACTUAL temps are. He could be running 1800*? :?
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Again, you're bringing DSM arguments to the Subaru community and they don't work here. Like Scott and myself said, #3 WILL BE the cylinder to run hottest if you have stock fuel rails. Period. Every single time. So, that's where you want to monitor EGTs. And no, you don't tune with EGTs, you tune with your ears, a knock sensor, and a wideband O2 sensor.
If you have a temp probe that could fail at 1600 degrees, then it's not going to be very helpful. You should return it and get the one that can handle the heat, even if your gauge only reads to 1600, because that's hotter than you want the EGTs to be anyway.