EGT values

[Rocco]

today i was coming to home in the motorway and i have noticed that my EGT cruising in 5th gear ,4000 rpm , -0.2bar is just the same as with WOT with 2.0bar in 5200rpm .... 776ºC ( EGT sensor just after the turbo hotside) is it "normal" ??
AFR at this point is cruising is between 14s and 15 ....

AH¡¡ and in 3rd gear / 7000rpm were 810ºC

[Jonnybravo]

I was actually going to use one after you had mentioned it but with my ecu and dash setup I may as well just use the AEM I had and use the datalogging from the ecu and dash.

It is a great bit of kit though and when I can afford £200 I will buy one to try it out in another car I have.

I can see why it would be so useful in a Audi when on the stock ecu though

[prj]

Or you could use this:

http://www.s2forum.com/forum/showthread.php?t=49127

[A80Avant]

i use the vems sensor as well, only bought from Marc at efiexpress

[Thuppu]

I have this setup with wideband and egt-sensor: http://shop.vems.hu/catalog/roundwbo2egt-p-101.html Works like a clock.

[Rocco]

i have this :

http://auberins.com/images/Manual/AUBER1813-instruction1-0.pdf

http://www.auberins.com/index.php?main_page=product_info&cPath=5&products_id=19

[Jonnybravo]

I totally agree, do you know what sensor it is that your using ?

[A80Avant]

i have been using a probe ever since i fitted the 3071r before the turbo and never had a failure with the probe falling to bits. If manufacturers say they can widthstand 1200C+ then there shouldnt be a problem. I know it is a risk, but most tuners suggest to fit it on the turbo or before the turbo(EM) to get the most accurate readings. They should have more experience than me in making their suggestions. If they were seeing broken elements that often, the would suggest otherwise.

[Jonnybravo]

I was just about to start a thread along the lines of this one so I'll just post in here.

I'd like to know where I shoudl fit my probe, the exhaust elbow pre turbo has a boss in their for a probe for when it was raced, due to be slightly concerned about a probe falling to bits I don't know if I want to fit one there so if its in the downpipe how far from the turbo would you mount it.

Are Inconel probes as indesructable as people say and if so does anyone know of a supplier ? Failing that can anyone advise a good normal probe to use in the downpipe.

Cheers

[Rocco]

rocco hi octain fuel allows you to exploit the timing giving you more advance adjustment because its more det resistant = more power. meth, bioethenol etc are very hi det resisting fuels but havent got as much energy as petrol so you need a lot more of it for the same bang. they also run a lot cooler than petrol. running lean on hard accelleration will kill the motor, never go leaner than 13/1. also cooling the egt with fuel is limited, as prj says it will at some point sap power. retarding timing also increases egt, so it is a lot of complications (these are just basic ones) to get the best out of a motor, thats why it realy will pay off to use a good mapper

thanks for the explanation

[butchone]

rocco hi octain fuel allows you to exploit the timing giving you more advance adjustment because its more det resistant = more power. meth, bioethenol etc are very hi det resisting fuels but havent got as much energy as petrol so you need a lot more of it for the same bang. they also run a lot cooler than petrol. running lean on hard accelleration will kill the motor, never go leaner than 13/1. also cooling the egt with fuel is limited, as prj says it will at some point sap power. retarding timing also increases egt, so it is a lot of complications (these are just basic ones) to get the best out of a motor, thats why it realy will pay off to use a good mapper

[Dan]

Read a book Rocco

http://www.youtube.com/watch?v=GlKL_EpnSp8

Sorry, had to.

[Rocco]

No.
Read a book Rocco

Timing and boost is what gives power, fuel is just a tool to combat temperature.
Of course if you go too rich or too lean you will hurt power, but there is no point in doing that.
You will make more power by backing off timing or boost than running stupid rich.

thank you very much Dmitri like always

[prj]

No.
Read a book Rocco

Timing and boost is what gives power, fuel is just a tool to combat temperature.
Of course if you go too rich or too lean you will hurt power, but there is no point in doing that.
You will make more power by backing off timing or boost than running stupid rich.

[Rocco]

a higher AFR values ( leaner mixture) will gives more power but EGTs will increase a lot true? leaner AFR values are only nice with +100 fuel Octanes true?