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Author Topic: E85 EGT's  (Read 12005 times)
Ansonmusic
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« on: September 28, 2014, 12:22:36 PM »

i have eurodyne maestro7 running E85 gas and my egts are showing 1015+ celsius is that normal or is something wrong and eversince i connected my cluth pedal wire harness my car limits boost according to what gear am in i can only get 10-12 psi in 1st-3rd gear 4th i get about 16psi i useto get 21psi in any gear before any help is apreciated
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daniel2345
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« Reply #1 on: September 28, 2014, 01:26:11 PM »

Dont know anything about that ecu or the car, you didnt told, but more than 1000°C on E85 is absolutely not normal.

Are you sure, that it isnt °F?
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Ansonmusic
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« Reply #2 on: September 28, 2014, 02:15:58 PM »

its a 05gti awp motor and everything in eurodyne is celsius think its possible the sensor
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Lost
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« Reply #3 on: September 28, 2014, 09:06:49 PM »

Dont know anything about that ecu or the car, you didnt told, but more than 1000°C on E85 is absolutely not normal.

Are you sure, that it isnt °F?

You should not see more than 700C, it is the all point of e85. Keeping temperatures down.
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ddillenger
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« Reply #4 on: September 28, 2014, 09:56:02 PM »

You cannot use the EGT model on the 1.8t's. It's horribly inaccurate if you've done any sort of modifications to the stock hardware. Best bet, get a thermocouple and confirm your actual EGT's/
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daniel2345
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« Reply #5 on: September 28, 2014, 11:19:49 PM »

Its a model?

What kind of aftermarket ecu is that?

Or such a "i do my own flashloader and map editing gui and sell the standard ecu as new tuning solution for stupid people?"
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ddillenger
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« Reply #6 on: September 28, 2014, 11:39:12 PM »

Its a model?

What kind of aftermarket ecu is that?

Or such a "i do my own flashloader and map editing gui and sell the standard ecu as new tuning solution for stupid people?"

No, it's a "I took the time to read the documentation on our ecu's instead of acting entitled and making accusations".

Most ME7 vehicles don't use EGT sensors, and of the few that do, many of those are narrowband. When people refer to EGT's they're usually referring to the calculated model the ecu uses.

That model is fairly accurate when dealing with a stock configuration. When you change ANYTHING, those calculations are no longer accurate and need to be checked.

His 2005 GTI does not have a physical EGT sensor, so the temperature he's referring to is calculated, therefore not necessarily accurate.
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masterj
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« Reply #7 on: September 29, 2014, 03:53:20 AM »

Fix ATM or do something more interesting and get RS6 egt sensors, enable ATR, full range control and be amazed Cheesy
« Last Edit: September 29, 2014, 11:41:10 PM by masterj » Logged

Terror_Flynn
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« Reply #8 on: September 29, 2014, 04:17:39 AM »

Masterj, that could be a really good mod. Is it doable? Has anybody done it or tried to do it on 1.8t?
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ddillenger
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« Reply #9 on: September 29, 2014, 04:24:34 AM »

Masterj, that could be a really good mod. Is it doable? Has anybody done it or tried to do it on 1.8t?

Sure. If you're skilled with IDA and hang around for a couple years, it's definitely doable.
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daniel2345
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« Reply #10 on: September 29, 2014, 09:30:40 AM »

Ok, such kind of ecu. Clear. Wink


I've done this EGT input with Volvo ME7, but with an 0-5V input from external egt Controller. Was very complicated. In winter i'll try to do it via can, should be more easy.
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ddillenger
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« Reply #11 on: September 29, 2014, 10:15:02 AM »

If you just want to log the value via the ecu that won't be hard. If you want to incorporate that into the egt model, that's another story.
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MIL_on
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« Reply #12 on: September 29, 2014, 10:35:44 PM »

You should not see more than 700C, it is the all point of e85. Keeping temperatures down.
Sorry, but to which hardware are you referring these 700°C? I have done a few e85 cars with Big Turbos and they all hit the range ~850°, which is still fancy low! Lambda round about 0,85.

Ddilenger: I don't know which variants you had in the US, but here in europe in fact the most are 1024kb + wideband, but only a few (225hp models) had the sensor, rest is using ATM (150-210hp) from factory. But on these its kind of walk in the park to activate the ATR instead of ATM.
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daniel2345
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« Reply #13 on: September 30, 2014, 09:09:22 AM »

Think about the laminar and turbolent flame velocity for E85 at lambda 0.85.

Then you know why people calibrate E85 richer and why the EGTs are cooler.
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« Reply #14 on: October 05, 2014, 12:58:58 PM »

Sorry, but to which hardware are you referring these 700°C? I have done a few e85 cars with Big Turbos and they all hit the range ~850°, which is still fancy low! Lambda round about 0,85.

Ddilenger: I don't know which variants you had in the US, but here in europe in fact the most are 1024kb + wideband, but only a few (225hp models) had the sensor, rest is using ATM (150-210hp) from factory. But on these its kind of walk in the park to activate the ATR instead of ATM.
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