EGT gauge

[Ironsquid]

Assuming good thermocouple placement /egt readings you don't think it's possible to eliminate false knock? I'm not saying it would be an overnight thing. It would take a lot of data to determine. Might be beyond the limits of what ecutek can do right now.

[mrk1]

I think due to variations in manifolds, turbo's, and sensor placement it would be real hard to compare notes on EGT readings. I have ordered one for my car and will start compiling data when the car is running. Barring any outliers I wont really know what to make of the data for a while.

[Ironsquid]

Originally Posted by mrk1

I think due to variations in manifolds, turbo's, and sensor placement it would be real hard to compare notes on EGT readings. I have ordered one for my car and will start compiling data when the car is running. Barring any outliers I wont really know what to make of the data for a while.

No Im saying on an individual car, too many variables otherwise. Given enough data I think you could safely eliminate false knock.

Basically compare knock against known egt range for the specific car, before writing knock correction, but as I said I dont think ecutek could do this right now.

[mrk1]

Originally Posted by Ironsquid

No Im saying on an individual car, too many variables otherwise. Given enough data I think you could safely eliminate false knock.

Basically compare knock against known egt range for the specific car, before writing knock correction, but as I said I dont think ecutek could do this right now.

I see what your saying and that's to software heavy for me to know about. I'm looking to use egt for manifold/hot side development.

[wparsons]

Originally Posted by SubBrZ

Thanks everyone for all the info. If I were to get gauges for everyday driving and some drag races at the track. What woul be some of the useful ones?

Are you using them for tuning, or just to keep an eye on things? Most tuning platforms also support logging, which is much more useful than an in car gauge.

I doubt you would be watching any gauges close enough in a 1/4 mile run to stop before any damage is done.

[Ironsquid]

Originally Posted by mrk1

I see what your saying and that's to software heavy for me to know about. I'm looking to use egt for manifold/hot side development.

Awesome I want to know what you find. Will you be testing UEL, EL and maybe twin scroll?

[mrk1]

EL with different turbine housing, and then twin scroll. I have no interest in UEL, don't like to complicate design for a noise.

[arghx7]

If that's what you're planning on doing, you should put pressure transducers in the exhaust manifold to see what the pre-turbo backpressure is. That will be more useful to look at than temperature, because you'll probably run it rich enough to keep the turbo from overheating anyway.

[stugray]

Originally Posted by arghx7

If that's what you're planning on doing, you should put pressure transducers in the exhaust manifold to see what the pre-turbo backpressure is.

Interesting idea, but good luck finding an inexpensive pressure transducer that can survive being red hot.
Even the expensive aerospace versions would probably require active cooling.

[steve99]

Just for interest the ecu calculates a parameter called Catalyst Temp (temp at primary cat in header). I believe it does this via the 02 sensor by using the o2 sensor current\voltage values through the o2 heater hence calculate it resistance which is then plotted against temperature. You can monitot this using Techstream , Tactrix if you have the correct ram address , or other logging system. Its probably not super accurate but will give some idea of temps (ie increase or decrease due to your changes or over stock car) and you dont need to fit or buy an aftermarket sensor.
@stugray

http://datazap.me/u/steve99/e85-v5-c...8-31&mark=1256