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Old 06-06-2005, 07:30 PM   #151
Drayton
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I compiled graph from the data values from my run last night and this was the result.

I think this software will become a standard piece of equipment before long.
Thanks to this software, I now know that under the type of driving I do 80% of the time, the EGTs generated do not pose an immediate risk of feeding the probe to the turbo. That is peace of mind and best of all, for free.
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Old 06-06-2005, 07:31 PM   #152
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just hooked my EGT probe back in, will take it for a spin when i go get dinner.
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Old 06-06-2005, 07:45 PM   #153
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Don't waste too much time or energy re-installing the stock EGT probe. I've read that it's not very accurate... the ECU simply uses it as an indicator of health of the uppipe cat.

365 is definitely not accurate... no matter if it's Celcius or Fahrenheit (it would be 689 F if it's 365 C). I have an Omori EGT gauge with the probe tapped into the driver's side manifold... I get constant 1200 degree F temps just driving around at 30-40 mph. That rises to 1400-1450 while on the highway. Even when a "real" probe is installed in the uppipe, readings should be higher than 365... typically, they're around 200 degrees F less than at the manifold.

Basically, I wouldn't waste my time with the stock EGT probe.
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Old 06-06-2005, 07:54 PM   #154
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i put the probe back in (easy to get to on the Helix UP)

no response until +365. i think my max was 765 on a 3rd gear romp onto the hwy.
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Old 06-06-2005, 08:48 PM   #155
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Quote:
Originally Posted by Quack
i put the probe back in (easy to get to on the Helix UP)

no response until +365. i think my max was 765 on a 3rd gear romp onto the hwy.

Hmm... if that's Celcius, 765 (1409 F) is relatively believeable for WOT in third. If the "200 degrees F cooler in the uppipe" rule is correct, you'd be around 1600 F in the manifold. It's almost as if the stock EGT probe has really low sensitivity ... you might want to consider a better EGT gauge if the temps you're seeing are close to accurate.
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Old 06-06-2005, 09:03 PM   #156
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it says F, but i don't think know it it did the conversion.

here are some other temp readings (max) w/ the C to F conversion selected

coolant - 186.8 (seems right)
intake air - 98.6 (seems right)
Fuel temp - 32 (F?)
EGT - 765 (F?)

the last 2 don't seem right
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Old 06-06-2005, 09:14 PM   #157
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very cool, I never knew about this...I will be sure to download it and check it out
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Old 06-06-2005, 10:48 PM   #158
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Maybe I am being stupid, but I am not seeing EGT readings on the list..... Any advice?
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Old 06-06-2005, 10:55 PM   #159
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Just did some logging at idle in my 05 FXT. Logged worked great but the log columns are off by two. I think someone mentioned this already.
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Old 06-06-2005, 10:55 PM   #160
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does this new version show injector duty % if not what is the conversion?

Thanks...
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Old 06-06-2005, 11:04 PM   #161
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Quote:
Originally Posted by CBoldman
Maybe I am being stupid, but I am not seeing EGT readings on the list..... Any advice?

exhaust gas temp

think it's near the bottom of the analog parameters.
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Old 06-06-2005, 11:05 PM   #162
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Quote:
Originally Posted by mpower22
does this new version show injector duty % if not what is the conversion?

Thanks...
no,

IDC% = IPW*RPM/1200.
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Old 06-07-2005, 12:09 AM   #163
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Quote:
Originally Posted by engr
Gtechs work off of a totally different princinple.. they are accelerometer based that detects accel and decl and correlate them to time to give you your distance.. Remember physics class V=d/t?

or d=at^2

f=ma, f is determined by accelerometer... m you know... and a can be calculated... then this a is used in first equation combined with a timing device to determine whether you've got 1320 ft...

With the actual time, velocity data from the ECU, you can determine 1/4 time time, or even come up with a dyno chart...

Power=ForcexVelocity... this can be converted to torque... which can then create hp by the hp=torque*rpm/5252 equation...

that's how the other programs have dyno plots...

Calvin... you listening ?
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Old 06-07-2005, 12:56 AM   #164
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Quote:
Originally Posted by calvinc
1I appreciate all the offers of money, but i cant accept it. just keep on using it and building a support base, thats enough payment.

regards,
calvin.
This guy is seriously cool, I will be up and running on this shortly. Maybe we can add in some other features like the way ecutek on the timing maps color codes where the car is experiencing knock. I know it doesn't have a timing map, but it could generate one from what it's reading? Shoot me if it already does this.
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Old 06-07-2005, 02:01 AM   #165
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I am getting some crazy numbers when I log the data. I chose to log all of the analog options. Maybe someone else can analyze my data for me?

http://homepage.mac.com/cboldman/.cv...7s.csv-zip.zip
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Old 06-07-2005, 02:16 AM   #166
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mnavarro, when you say color coded timing map, is that like a 3-D xyz axis thing, or a xy axis thing that relates timing to RPM or timing to knock correction?
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Old 06-07-2005, 05:24 AM   #167
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Quote:
Maybe I am being stupid, but I am not seeing EGT readings on the list..... Any advice?
not all ecu's support the same parameters. do others with the same ecu type as you get the egt data item?

Quote:
does this new version show injector duty % if not what is the conversion?
not yet. might add it in soon. need to figure our the rpm address for the cobb users first.

Quote:
I am getting some crazy numbers when I log the data. I chose to log all of the analog options. Maybe someone else can analyze my data for me?
is it not the skewed columns with the rpm data missing - like we've seen on the cobb users?

Quote:
Maybe we can add in some other features like the way ecutek on the timing maps color codes where the car is experiencing knock. I know it doesn't have a timing map, but it could generate one from what it's reading?
when we can read out the ecu rom then we can do something like that.

calvin.
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Old 06-07-2005, 06:16 AM   #168
Quack
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here's my log file. i'm running a 2004 Wagon (w/ 2005 ECU) VF30 w/ Cobb AP.
this is also before i re-installed my EGT probe
http://www.wrxfanatics.com/index.php...post&id=434524

and with the EGT probe installed:
http://www.wrxfanatics.com/index.php...post&id=435651

Last edited by Quack; 06-07-2005 at 06:25 AM.
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Old 06-07-2005, 08:23 AM   #169
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Quote:
Originally Posted by CBoldman
Maybe I am being stupid, but I am not seeing EGT readings on the list..... Any advice?
From your profile, you have a USDM STi. Your car does not come with an EGT sensor, so the ECU is not programmed to display a value. In general, the EGT sensor is only found on the cars with a cat in the up-pipe, like the WRX, FXT, LGT, etc.
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Old 06-07-2005, 11:31 AM   #170
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Quote:
Originally Posted by Drayton
mnavarro, when you say color coded timing map, is that like a 3-D xyz axis thing, or a xy axis thing that relates timing to RPM or timing to knock correction?
When I was getting my ecutek tune, the timing map was color coded where knock events where happening from blue (good), green(ok), yellow,red (knock). What's cool about it is you get to see visually where the knock is happening. The tuner just goes to those cells where they're red and takes a few degrees of timing out.

My idea because we don't have access to the timing map directly from the software:

Let the software do a rough map of timing over engine load, building a map as it goes. When knock events happen it shows them in a graph, making it easier to see where areas of the actual timing map need to be tuned. Maybe, the same thing with AFR and boost. It's nice because in one quick glance you know where your problems are at.
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Old 06-07-2005, 11:44 AM   #171
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Will this cable plus the home made interface that's linked in that page work? sorry if I'm wtlw
http://www.obd2cables.com/products/index.php

Last edited by Undepelo; 06-07-2005 at 11:45 AM. Reason: forgot the dam link
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Old 06-07-2005, 12:34 PM   #172
Drayton
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So basically one could make a line graph using timing, knock correction, and/or the knock sensor digital parameter. To use the resulting graph like you're wanting to use would mean trying to do a 3rd gear wrx or 4th gear sti pull as smoothly as possible, right? The way I understand it, the digital knock parameter is like 0=no knock and 1=knock. So you could make a two axis RPM vs Timing graph to get a feel for what the timing does at a certain RPM, and make a timing vs digital knock parameter and be able to tell where knock happened at a certain timing point? <-- Knowing from the previous graph where in the RPM range that knock occured.

I like your way better, sounds much slicker, but do I have the concept?
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Old 06-07-2005, 12:57 PM   #173
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No - that is just a wiring adapter cable without any electronics. I sell a USB one at

tactrix.com

or there are other kits like this which will probably work:

http://www.andywhittaker.com/ecu/obdii_hardware.htm


Quote:
Originally Posted by Undepelo
Will this cable plus the home made interface that's linked in that page work? sorry if I'm wtlw
http://www.obd2cables.com/products/index.php
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Old 06-07-2005, 01:03 PM   #174
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Quote:
Originally Posted by colby
No - that is just a wiring adapter cable without any electronics. I sell a USB one at

tactrix.com

or there are other kits like this which will probably work:

http://www.andywhittaker.com/ecu/obdii_hardware.htm
What I ment was the wire in the link PLUS this:
http://www.planetfall.com/%7Ejeff/obdii/
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Old 06-07-2005, 01:13 PM   #175
colby
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that should work if you get the pinouts right.

Quote:
Originally Posted by Undepelo
What I ment was the wire in the link PLUS this:
http://www.planetfall.com/%7Ejeff/obdii/
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