I just bought an AeroForce Technology Pro scan gauge and haven't installed it yet, but I'm wondering about exhaust gas temperatures. Will this gauge read the temperature ? It's advertised that it will, but the manual that came with it isn't specific about it.

If it will read it what kind of temperatures am I looking for ?

I read an earlier post where PSI Chick recommended an EGT gauge rather than a A/F ratio gauge because the EGT was more reliable to the minute. If this new gauge won't read EGT for some reason should I buy one that will ?

 

O.K, so I hooked up the AeroForce Pro scan gauge and it is registering Exhaust gas temperature. What type of temps am I looking for ? Anyone ?

 

Did you have to install an EGT probe? If not I wonder how it's getting EGT?

Anyway I see around 1000-1100 idling about 1200-1300 cruising and between 1500 and 1600 when running hard.

 

Thanks for answering up Mchat,

Nope, no exhaust probe, that's why I was wondering if it would even work. After I ran it about a mile, sort of hard I finally found exhaust temp on the gauge and it was reading about 1085. So, now I'm wondering what temps I might see if it's running too lean ?

 

Sounds like it must be "calculating" the EGT from the O2 readings. IMO a true EGT guage would be better, albiet they're not cheap. Mopar has them (either with the SRT logo or Mopar logo) for $161: http://www.mopar.com/m_perf_subcatCh...=1164571639241

This is the same guage (just with a different face) that Summit is selling for almost $230, so it's actually a deal to get it through Mopar Performance (aka, your local dealership).

 

I don't know, this Aeroforce pro gauge is cool. You can choose to display 2 reading at all times and then scroll the rest. EGT and Turbo boost are the 2 displays I've decided to leave up to read constantly but I can scroll though intake air temp, outside air temp, fuel temp, 0-60, 1/8th mile, 1/4 mile, MPG, gallons of fuel left, coolant temp and a lot of other things I'm not real sure about like duty cycles, knock retard, spark timing and things like that. It's just a scan tool built into a 52mm gauge, checks codes and clears codes while you're driving if you want.

I took it twenty miles down the road today and for the most part the EGT was staying between 1350-1450 depending on how hard I was running. Because of the fact it's reading through the OBD11 hook up on the car the reading may not be exact but they are exact according to what the various sensors are telling the computer in the car so that's what counts.

 

Yea, that's what I was guessing. The EGT is calculated based on O2 readings most likely, which means it's no more accurate than the O2 sensor itself.

But it sounds like it's working for you anyhow.

 

i have no direct experience with that gauge, so i can't really be of much help. most people that i've seen using them aren't using the egt function, or at least not as a primary tunig tool. if that's what you want to use, then i would suggest making sure that the o2 sensor is working properly because if it's not then you can't get accurate numbers. also, remember that since it's reading from the o2 sensor and not in the manifold like a egt probe would be, the numbers are going to be slightly lower. figure about 100-200 degrees below what the probe would read.

the newer wideband sensors are actually very good, and while they do take a few seconds to register compared to a mechanical egt probe, they are accurate enough to tune from as long as the calibration is correct. i actually compared my wideband to the probe on the dyno, and the gauge was about .2 higher, which is well within range.

 

I wrote the people at Aeroforce Technology about the acuracy of the EGT function of their gauge. They directed me to a thread I've pasted below on the "other" forum.
They also told me EGT accuracy is a hard to determine thing, it's all dependent on where you place the EGT probe. Seems the AeroForce Technology Scan gauge has in their testing, and other owners tests, on that forum been found to be reading on the high side, rather than possibly low which if it read low may allow someone to fry their engine.

Another member wrote the following,

For those of us who stick to mopar plug n play kits, it will be damn accurate.
If you're using some other whack kit, You'd better use a real EGT gauge.
I do know that the PCM EGT value is at least very consistent, much faster reacting than the actual EGT, and reacts appropriately. As I lean out the fueling the EGT goes up. At lower boost, the EGT goes down if fueling stays the same.


I'm just passing this along for informational purposes in case anyone else may be interested in this gauge.

http://www.srtforums.com:80/forums/s...d.php?t=300339

 

You can get the AutoMeter Pro Comp Ultra Lite "2 1/2 EGT with everything for $119.99 at Jegs. It will match all your silver face factory gauges and it's part number is 105-4344 .