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Old 08-25-2003, 11:33 AM   #1
Dude
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Member#: 10653
Join Date: Sep 2001
Vehicle:
2002 WRX

Default SECS users: does your EGT read high?

I've got a PSI3 SECS unit hooked up to my WRX and my EGTs seem to be registering very high. Normal driving usually gives me an average of around 1250 C - 1300 C, and upwards of 1400 C during spirited driving. Please correct me if I'm wrong, but that sounds like my engine is going to blow up at any moment. But, I haven't heard any knocking, and my coolant and oil temp readings don't seem abnormal. The car has been set up the same way for months before the install of the SECS unit without any problems. Is there something different about the way the unit reads EGTs through the ECU, or have I just been extremely lucky up to now? Any light on this would be greatly appreciated.

Here are the details:

When I start it up in the morning:
EGT: 680 - 690 C
CT: 80 C
Oil Temp (From Elec Omori Meter reading from rear oil gallery): 0 F


After full warm up:
EGT: 1250 - 1300 C
CT: 180 - 190 C
Oil Temp: 190 - 200 F


"Spirited" driving:
EGT: 1400+ C
CT: 200 C
Oil Temp: 200 - 210 F

I have:
Monster TD04 (ported and polished) at 15 psi
STi intercooler
stock injectors
Helix flex uppipe with bung
ECUTek tuned
Greddy EVO catback
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Old 08-25-2003, 12:02 PM   #2
David@Vishnu
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2002 Pump Gas Homo

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I hope your just confused and the EGT reads in F- that would be spot on. If its a real C reading then you would have a puddle of aluminum under your car were the engine used to be mounted
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Old 08-25-2003, 12:56 PM   #3
Dude
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Join Date: Sep 2001
Vehicle:
2002 WRX

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Yeah, that's what's got me worried.
The SECS unit has the capability to toggle between F and C units. I've go the unit set to read in F right now. But EGT remains labeled as C, while all other measurements (Coolant, Intake temp, Oil temp, etc.) read as F. I'm hoping that it's just the label that hasn't changed, and that the values are Fahrenheit units......I hope.

But, wouldn't my car be blowing engine chunks out of its arse by now if those readings were correct?
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Old 08-26-2003, 08:38 AM   #4
Kha0S
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Chapter/Region: NESIC
Location: Grantham, NH
Vehicle:
2011 WRX (DGM 5D)
2002 WRX/2003 SVTF

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The SECS release that I have (v9, IIRC) displays "C" regardless of whether C or F is selected in the unit display option, the number is converted, but the unit on the display is left unchanged.

FWIW, with no cat in my up-pipe, I generally read between 750 (at idle) and 1050 (light throttle, climbing hill, high gear, etc.)

/Andrew
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Old 08-26-2003, 10:44 AM   #5
simwahWRX
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Midnight Black mica

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Mine (v9) reads more like Kha0s' - around 800 at idle, up to around 1100, with 1020 being the norm.

What are some other numbers the SECS is giving its users in other categories?

My knock correction is generally 0.0, but can get up to 8.0. My lambda numbers hang around 1.0, but go down to .6 or up to 1.4. Are these normal?

Also, my coolant gets up to 208 - any suggestions?

Is there a resource that shows what values are recommended/normal?
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Old 08-26-2003, 10:45 AM   #6
ataac_flat04
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Ditto on what Kha0s wrote. I did the unit conversion to "F" and noticed that EGT was still labeled as "C". Done a little math on the displayed numbers and figured there was no way that the displayed numbers could actually be celsius readings, or there was some serious melting going on. -Chuck
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Old 08-26-2003, 11:58 AM   #7
jblaine
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2002 WRX chassis...
stage-infinity.com

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Sounds buggy.

1050C is 1922F. Obviously way too high.

1050F is not correct for up-pipe-less EGT readings. Go WOT and you should see at least 1300.
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Old 08-26-2003, 06:11 PM   #8
Dude
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Join Date: Sep 2001
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2002 WRX

Default whew!

Okay, I'm not as freaked out now. If "C" is actually "F", then the numbers aren't that scary. A bit high, but not nearly as worrisome.

Sounds like my EGTs are still a bit high though. Does this mean that I am running to lean? What could be some other possibilites? Forgot to mention that I already have a larger PWR radiator.

Thank you for all your help homies.
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Old 08-26-2003, 07:49 PM   #9
zacek
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Join Date: May 2002
Location: Chatsworth, CA.
Vehicle:
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WR Blue

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the numbers on the top of the post look very normal. Nothing abnormal. 1400 F on spirited driving is waaay normal, mine used to go up to 1550 on canyon runs during summer.
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Old 08-26-2003, 07:51 PM   #10
edkwon
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Yep, thats a software/firmware error, i figured that out when you switch to C, all the temp values are correct, and i told this to quantum-racing.com who is going to notify PSI^3 about this bug. The absolute numbers should be right.

Ed
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Old 08-27-2003, 12:35 AM   #11
Dude
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Member#: 10653
Join Date: Sep 2001
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2002 WRX

Default woo hoo!

Wow thanks guys!
That's a big load off of my mind. Absolution from my fellow subrothers!

thanks again
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Old 08-27-2003, 12:58 PM   #12
Kha0S
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Location: Grantham, NH
Vehicle:
2011 WRX (DGM 5D)
2002 WRX/2003 SVTF

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Quote:
Originally posted by jblaine
Sounds buggy.

1050C is 1922F. Obviously way too high.

1050F is not correct for up-pipe-less EGT readings. Go WOT and you should see at least 1300.
Tapped where?


/Andrew
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Old 08-27-2003, 01:06 PM   #13
jblaine
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Location: St. Pete, FL
Vehicle:
2002 WRX chassis...
stage-infinity.com

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WOT on a stock setup with EGT probe in catted up-pipe read right around 1350 on both my 02 WRX and another one (as recorded via DeltaDash).

WOT gauge readings with a tap just outside of the driver's side collector are around 1400 for me.
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