Welcome to the SR20 Community Forum - The Dash.
Register
SR20 forum logo

Thread: does anyone hear use egt's

+ Reply To Thread
Posts: 11-20 of 24
2009-10-29 01:03:14
#11
just wondering because i no a few people that use egts to help tune their cars or just use egts to tune their car. it helps alot because when ur running alot of over lap ur a/f guage mite be reading alot of the fuel its sees during valve overlap so your wide band mite be reading a 12 to one a/f ratio but ur realy running 13 to 1 a/f ratio or something along these lines.but with a egts u can see how hot your exhust gases are.witch also helps alot a long the lines of safety.
2009-10-29 01:40:41
#12
Uhhh.... Close, but no cigar.
2009-10-29 01:45:21
#13
egt's are great for tuning your cruise for more of a lean side, the egt will allow you to push the AFRS to the limit without and will allow you to see the threshold as to where the egts get too hot. i find the egt would be extremely helpful with cruise tuning and get you greater gas mieage doing so
2009-10-29 03:16:47
#14
Originally Posted by BenFenner
Uhhh.... Close, but no cigar.


how so what did i say that is wrong
2009-10-29 03:21:07
#15
Originally Posted by GT2871RBLUBIRD
egt's are great for tuning your cruise for more of a lean side, the egt will allow you to push the AFRS to the limit without and will allow you to see the threshold as to where the egts get too hot. i find the egt would be extremely helpful with cruise tuning and get you greater gas mieage doing so


i find it helps in drag racing considering thats how my uncles 1000 hp all motor big block was fine tuned with egts.which he also ran a 800 shot of nitrous on top of.
2009-10-29 03:23:31
#16
Originally Posted by BenFenner
Uhhh.... Close, but no cigar.


if you can tell me it will be greatly appreciated
2009-10-30 12:01:15
#17
Originally Posted by buickpower
how so what did i say that is wrong

Originally Posted by buickpower
if you can tell me it will be greatly appreciated

Oxygen sensors don't sense fuel, they sense oxygen. In your example you have your numbers backwards.
Originally Posted by buickpower
when ur running alot of over lap ur a/f guage mite be reading alot of the fuel its sees during valve overlap so your wide band mite be reading a 12.1 a/f ratio but ur realy running 13.5 or something along these lines.




Even if you said the numbers right, I'm skeptical about the entire method.
I will concede which ever sensor/controller is faster would be the better one to use.
2009-10-30 13:35:48
#18
Originally Posted by BenFenner
I think most of what you're looking for is in this thread:
http://www.sr20-forum.com/turbo/11593-lets-talk-gauges.html
This is also tangential info if you'd like to read it:
http://www.sr20-forum.com/turbo/12594-egt-gauge.html


Thanks!
I haven't had a chance to read though the tangential stuff yet. Any thoughts on the adverse effects of cutting the probe cable?
2009-10-30 15:02:36
#19
I believe the cables are a "tuned" length that work in conjunction with the sensor. Really, all a typical EGT sensor consists of is a long chromel(?) wire from the plug to the metal casing connected to an alumel(?) wire inside the casing that runs back from the casing to the plug.

Thermocouple - Wikipedia, the free encyclopedia

You can't lengthen or shorten the cable without changing the readings and throwing it out of calibration even if you use the proper metals because the wire length is actually part of the sensing device.
2009-10-31 01:07:01
#20
Originally Posted by BenFenner
Oxygen sensors don't sense fuel, they sense oxygen. In your example you have your numbers backwards.




Even if you said the numbers right, I'm skeptical about the entire method.
I will concede which ever sensor/controller is faster would be the better one to use.


no i said it rite i am saying that your wideband could be reading richer than u really are. 12 to 1 is richer than 13 to one a/f that means 12 particols of fuel to 1 partical of air. but i could be wrong
+ Reply To Thread
  • [Type to search users.]
  • Quick Reply
    Thread Information
    There are currently ? users browsing this thread. (? members & ? guests)
    StubUserName

    Back to top