#12130, "RE: Where should I/did you mount the EGT probe?" In response to Reply # 0
teamrip.com has instuctions for mounting it.
It should be between 4 and 8 inches from the head in the #1 runnner. Since my probe was a bit long, I mounted it at an angle (/ not |) on the exhause manifold. There are detailed instructions at teamrip.com though.
#12131, "RE: Where should I/did you mount the EGT probe?" In response to Reply # 1 Jan-10-04 07:13 AM by Diceman19
the main reason that i ask is because since the gauge is only a 1600F gauge, it will be maxed out if i install it on the mani. it wont be accurate once it hits the 1550 mark or so anyways. autometer says so. plus, the autometer instructions say that on turbocharged vehicles, place the sensor within 1 inch from the 02 housing on the dp. i also have a lot of good reasons for putting it on the dp that i have gotten from tuners. just checking what my FAMILY thought.
#12132, "RE: Where should I/did you mount the EGT probe?" In response to Reply # 2
With the probe mounted in the exhaust manifold, you'll want to know the exact second you hit anywhere close to 1600. Avg running temp is 1500-1550, so any higher than that is close to melting stuff, which I know about first hand. In the #1 or #2 runner gives you the best reading. Put it in one of those.
#12133, "RE: Where should I/did you mount the EGT probe? *LONG*" In response to Reply # 3
more questions. if i place the probe in the runner, how often should i check it to make sure it doesnt break off and run through the turbo? that is another reason why i am leaning towards the dp install. i have read on tuners that regardless of where the probe is, if you compensate for the location of the probe, you should see the same temps generically speaking. if they go up higher than normal, no matter where the probe is, you should check it out. i am also nervous about drilling into my manifold because i know they are suseptable(sp) to cracking. why would autometer say put the probe behind the turbo if that is not the best spot for it. they designed it, wouldnt they know?
my planned setup for spring, new 02 housing that dumps 02 to atmoshpere from WG, with new DP and 3" catback. if i were to install the probe after the turbo, the temp would not be affected by the WG letting gases through to the probe. what are your thoughts on that scenario?
sorry for asking so many questions. i have been reading on this for about 2 full days now. i dont want to just do what everyone else has done or says to do because then innovation is pretty much null. i am trying to make a good education based decision and i see many advantages of putting the probe in both locations as well as negatives. any extra feedback on the subject is appreciated.
#12134, "RE: Where should I/did you mount the EGT probe? *LONG*" In response to Reply # 4
here is something i pulled from tuners
OK Here is my thought on manifold vs dp egt install.
I always install in the downpipe vs the exhaust manifold. Your basic Autometer EGT reads 1600 deg. When the probe is in your exhaust manifold you could get readings as high as that and not have to worry. If you listen to everybody and put it on the hottest cylinder then you will definately peg that needle.
Now what happens if something is wrong? Your EGT is pegged already so if your running 50deg hotter your not going to know. Well the needle will just move past 1600 right? Well yes and no. Talk to autometer about this one. They say that even approaching 1600 deg the gauge is not very accurate and definately past 1600 it is not. What may look like 50deg past 1600 ( or 1650deg) could very well be 1700 deg. But because you put your probe in the hottest spot you could find you'll never know.
What the acctual temperature is does not really matter. As long as your getting constent reading from the gauge is what matters. If you put it on your exhaust tip and it reads 200 deg all the time then fine. Just make sure you dont see 210deg cause that could mean problems. NOw obviously this is not ideal, but you get the idea.
What I always say to do is run it in the downpipe and always install your EGT on a car that is tuned perfectly so you know where it should sit on your car when it's properly running. If you want to know the difference between a manifold reading and behind the turbo I have generally found that you need to add 150deg to the reading if the probe is behind the turbo vs the manifold. Then your EGT will sit at ~1400 at WOT and if you run into a problem you have 200 deg of room left on the gauge to read it. It really doens't matter what the guage reads as long as it doesn't change when your tuning or driving around. If you get a different reading then you know there is a problem.
Those gauges are not even close to accurate so trying to put it on the hottest cyl for an accurate reading is nonsense, your only fooling yourself. Put it wherever you want but put it far enough away from the head that you have some type of room to go up on the guage so you can see if there is a problem. Having it pegged at 1600 deg under WOT becauese you put it 1 inch from the head doens't leave you a lot of guage left to see if there's a problem.
#12135, "RE: Where should I/did you mount the EGT probe? *LONG*" In response to Reply # 5 Jan-10-04 12:04 PM by eclipzGST
you WILL melt stuff above 1600^. You want it in the manifold in the hottest runner and want to know AS SOON as you hit 1600^. Temps above 1600^ will not matter cause you ideally don't want it above 1600^. If you see 1600^ temps in your DP than you're aleady fukked. You can listen all you want to the people that sell or design them but you should REALLY listen to the people that USE them and know from experience what will thrash your motor.
__________________________________________________________ -Tony <--- NOT asian. '06 Wicked White EVO IX
Originally posted by Avenger When I raise the BS flag ... it's a really big fucking flag and I raise it really fucking high too.
"Never whistle while your pissing." ~The illuminatus Trilogy
#12139, "RE: Where should I/did you mount the EGT probe? *LONG*" In response to Reply # 9
The so called "danger temps" can be somewhat misleading. The TRE probe is a good investment because it reacts so quick but it shouldnt be your only tuning tool. For example: When i was having problems with phantom knock, i could leave a light and even at partial throttle, my EGTS would sometimes exceed 1600. Now was i in danger of blowing my motor? No. But the timing being pulled by thwe false knock was causing super hot exhaust gases/flames to be shot into the manifold. I wouldnt have known this was happening without a logger showing me the 43 counts of knock. Since the TRE probe reacts so quick, by watching it, you can see if there are any drastic jumps in tempature over a range of say 200-300 RPMs. Any rapid jump in temp, even from say 1300-1500 is a sure sign of knock. Even though you havent reached the "danger temp" its a good idea to get off throttle.
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