Thread: does anyone hear use egt's

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.

Uhhh.... Close, but no cigar.

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

how so what did i say that is wrong

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.

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.




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.

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?

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.

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