i am starting to buy the mods necessary to install on the car before i order a megasquirt from Mr Slick
aermotive fpr, fuel injectors, wideband etc etc

question is how necessary is an egt gauge
i know that they are useful tools
but i have read threads saying that they are the greating thing in the world and others that say that they are just nice to have

to get a MS up and running I dont think i need the egt yet do I?

thanks

Regardless of the fuel setup you have I would HIGHLY recommend having the ability to monitor your EGT's.

EGTs are extremely important. i have many other gauges (fuel pressure, oil pressre, dynojet wideband, intake temp, oil temp, water temp and boost) but still rely on my egt gauge very much and usually look at it while boosting over anything else.

being mechanical, i would consider the EGT gauge to be the most fool proof at detecting an impending failure. AF gauges and widebands are electronic in addition to having mechanical sensors so there's more possibility of malfunctioning. basically you know your engine is fine if the EGTs are good...why not get one.

thanks for the info
i have just read so many people going back and forth over which one is better between the wideband and the egt

seeing as how the dakota digital egt is 150 for the gauge and the sensor
it is a worth while investment i think

i am looking at the plx-m300 wideband because it replaces my stock o2
that way i dont have to add in another bung for it
i just dont want to get ready for install and realize that i have missed something important

dont replace your stock o2 sensor. add another bung.

forgive my ignorance but
if the plx has both narrow and wideband capability
what is the need for two

why possibly cause yourself more problems. having another bung put in is not a big deal.

also.. the stock o2 sensor is too close to the turbo for most wideband o2 sensors. it needs to be farter down the line. mine is behind my flex pipe which is the perfect location.

cool that makes sense
will there be a difference in readings depending on where it is put
behind the DP

yep...put it in the #4 manifold runner. the idea is to get as high a reading as possible. now obviously, higher number are bad, but if you are getting higher numbers at least you know they are accurate. if you mount the probe in a funky place and get low readings, you may think youre at 1300 under boost because you installed the probe in the DP when in reality youre at 1550 degrees in the manifold. better to see high numbers and be worried about tuning than see low numbers and not know anything is wrong until something gets destroyed internally

EDIT: another note, if and when you decide to install the probe in the #4 runner, install it in the side of the runner, rather than on the top. it will be easier to route the thermocouple wiring if its on the side and also if you ever decide to construct a heat shield for the exhaust manifold (which i am doing now) it will be a lot less of a headache to have to worry about lining up a hole in the shield for the EGT probe if the probe is towards the bottom side of the runner instead of the top

definetly install the probe in the 4th runner. ontop or the side doesn't matter for use. the 4th runner tends to run hotter than all the rest, therefore if #4 is good, you can rest more assured that the others are fine.

wideband = no reason for EGT.

Jon

1997 Eclipse RS
1998 Dodge Dakota Sport
12.671 @ 111.660 1.586 60' 5/28/04

www.haiokuracing.com

shaun> i'm sayin', bro!

Originally posted by HiOnPSI
wideband = no reason for EGT.

youre wrong bud.

not when you have complete fuel and ign control, and it's tuned properly. which is one in a million for 2gnt owners.

Jon

1997 Eclipse RS
1998 Dodge Dakota Sport
12.671 @ 111.660 1.586 60' 5/28/04

www.haiokuracing.com

shaun> i'm sayin', bro!

EGT looks cool too :) I would also keep your existing o2 and add on the other. PLX is a good choice btw. I was bout 5 min from getting it when suieclipse sold me his techedge.

Originally posted by baxsom
cool that makes sense will there be a difference in readings depending on where it is put behind the DP

Originally posted by cyan
yep...put it in the #4 manifold runner. the idea is to get as high a reading as possible. now obviously, higher number are bad, but if you are getting higher numbers at least you know they are accurate. if you mount the probe in a funky place and get low readings, you may think youre at 1300 under boost because you installed the probe in the DP when in reality youre at 1550 degrees in the manifold. better to see high numbers and be worried about tuning than see low numbers and not know anything is wrong until something gets destroyed internally EDIT: another note, if and when you decide to install the probe in the #4 runner, install it in the side of the runner, rather than on the top. it will be easier to route the thermocouple wiring if its on the side and also if you ever decide to construct a heat shield for the exhaust manifold (which i am doing now) it will be a lot less of a headache to have to worry about lining up a hole in the shield for the EGT probe if the probe is towards the bottom side of the runner instead of the top

Originally posted by siueclipse
definetly install the probe in the 4th runner. ontop or the side doesn't matter for use. the 4th runner tends to run hotter than all the rest, therefore if #4 is good, you can rest more assured that the others are fine.

i think he was asking about placement of the WB 02 not the EGT... :shrug

Originally posted by MCubed45

Originally posted by baxsom cool that makes sense will there be a difference in readings depending on where it is put behind the DP

Originally posted by cyan yep...put it in the #4 manifold runner. the idea is to get as high a reading as possible. now obviously, higher number are bad, but if you are getting higher numbers at least you know they are accurate. if you mount the probe in a funky place and get low readings, you may think youre at 1300 under boost because you installed the probe in the DP when in reality youre at 1550 degrees in the manifold. better to see high numbers and be worried about tuning than see low numbers and not know anything is wrong until something gets destroyed internally EDIT: another note, if and when you decide to install the probe in the #4 runner, install it in the side of the runner, rather than on the top. it will be easier to route the thermocouple wiring if its on the side and also if you ever decide to construct a heat shield for the exhaust manifold (which i am doing now) it will be a lot less of a headache to have to worry about lining up a hole in the shield for the EGT probe if the probe is towards the bottom side of the runner instead of the top

Originally posted by siueclipse definetly install the probe in the 4th runner. ontop or the side doesn't matter for use. the 4th runner tends to run hotter than all the rest, therefore if #4 is good, you can rest more assured that the others are fine.

i think he was asking about placement of the WB 02 not the EGT... :shrug

you're correct. regardless, if he decides to go with an EGT in addition, it doesnt hurt to know where to put the EGT probe as well as the wideband bung.

Originally posted by HiOnPSI
not when you have complete fuel and ign control, and it's tuned properly. which is one in a million for 2gnt owners. Jon 1997 Eclipse RS 1998 Dodge Dakota Sport 12.671 @ 111.660 1.586 60' 5/28/04 www.haiokuracing.com shaun> i'm sayin', bro!

Something can always go wrong.