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Originally Posted by sp00ln
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In my personal experience when dealing with a WRX, it is optimal to place the probe in the passenger side exhaust manifold. This is going to give you an accurate enough reading to refer off of to how your car is running. Tuning off of an EGT gauge alone is never recommended. WRXs I tend to look for 700-800 (1400-1600) degrees. Going no higher than 850-900. This is only a reference point as I mentioned already. I was doing some road tuning with my WRX, and the EGTs were "safe" but AFRs indicated otherwise. My AFR was 11.8 - 12.2: 1, and on pump gas, WRXs do not like that and are inconsistent between fill-ups. When going WOT with my probe in the passenger side manifold, I saw EGT readings of 750-800 MAX with my GReddy gauge.
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That was from a friend of mine that used to build stroker motors for the WRX. He also continued to say that the injector #3 "pressure" problem has since been fixed, being that it's only an early wrx condition.
In any event, you monitor your EGT's for a CHANGE in temp ONLY. So, if you even go as so far as in putting it in the TIP of your exhaust and your temp is rising, there's a problem. |
He says to place it in the manifold, not the downpipe. Why do you still say otherwise? You keep saying that only changes in temperature matter, and we keep saying that's true, but to get ACCURATE readings of the changes, you need to be as far upstream as possible.
If he says the "problem" with leaning #3 has been fixed, I'd like to know how he came to that conclusion. WRX fuel rails still run in series, #3 is still at the end, and can still suffer pressure losses at high duty cycles.