Looks good raven are you port matching your intake manifold as well and PS grim Speed sells over sized tgv gaskets for a better port match.
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Silver Bullet 2004 WRX STI
- Thread starter Raven32
- Start date
Shoot our cars have the air bag recall on them? I'll have to take mine to the dealer if my vin matches the recall when my engine is done.
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yea about 1/2 way through my engine build I got a letting in the mail about the air bag inflators having a recall.
Looking good bro. I'm looking at the cerakote air dry ceramic coatings and probably will be investing in it to tie a bunch of my components together. I'm thinking of coating valve covers, intake manifold, water manifold under the intake manifold, intake, throttle body, header and up pipe all black then running the chrome pipes with the chrome spt radiator shroud I picked up for $20 last night for my bling lol.
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Seems like I am under the hood more often than not lately.
Now it's time to empty and replace the clutch fluid. Some how I missed this in all the years I have had the car. Over past week engagement point of the clutch has been moving around so thought fluid might be low. NOPE. It was black as night. Anyways quick dump And some fresh dot 4 and all will be well again.
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HolyCrapItsFast
Drinks beer!
What I heard from them directly is that the early 04 are not compatible because the ECU was changed mid year. The older 04's don't have the memory available for the flex fuel logic. It would pretty much be hit or miss. Their solution for that is to use an 05 ECU and disable the security in EcuTeck. I'm still gonna wait for Cobb. I have been using EcuTeck for a while now and I have come to the conclusion I don't like it. :lol:
So might be COBB the way to go then for flex fuel. That is if they ever support the GD series. Oh well, I will be entertained with the current setup for some time. Hopefully over the next year or so they will have a better solution for flex fuel on the GD series STI's. Now to pay off the go-fast bits I just installed lol. Thanks for the input.
HolyCrapItsFast
Drinks beer!
Well in preparation in the mean time we could do a separate e85 tune. This way when they do release it we can simply meld the two together and we will be that much ahead of the game.
so once again I got bored last night and was browing the interwebs on how to log via tgv 0-5V connector. After some researching I found these sites that allowed me to connect the white 0-5V output wire to my factory ECU.
http://www.aemelectronics.com/files/instructions/30-4100 Digital Wideband UEGO Gauge.pdf
http://aemelectronics.com/files/instructions/30-5130 Analog Wideband UEGO Gauge Gasoline AFR.pdf
http://www.northursalia.com/modifications/misc/wiring/04_STi_ECU.pdf
http://www.romraider.com/forum/viewtopic.php?t=6430
So reading out the way I got to work. Used a vampire tap for pin 27 on connector b136. This is the signal wire for the Tumble generator valve position sensor RH. After that opened up RomRaider Logger and checked for voltage on Tumble Valve Position Sensor Right, and Tumble Valve Position Sensor Left. As expected i could see voltage on the right sensor and nothing on the left since my TGV's have been deleted. Next i created a new logging paramater in the RomRaider logger xml file as follows.
<parameter id="P246" name="AEM Wideband gas" desc="P39" ecubyteindex="12" ecubit="0" target="1">
<address>0x000033</address>
<conversions>
<conversion units="AFR" expr="2.375*(x/50*0.004998779296875)+7.625" format="0.00" />
<conversion units="Lambda" expr="0.0006825 * x/50 + 0.6831" format="0.00" />
<conversion units="V" expr="x/50" format="0.00" />
</conversions>
</parameter>
This will allow me to log via the factory ECU my Wideband output. However, these values are still not correct and need to learn how to convert the AEM table to an integer so that it can convert the 5V signal to the correct AFR value for Gas and Lambda. Good news is by using the value of <conversion units="V" expr="x/50" format="0.00" /> i get the direct voltage output, but thats not very useful in its self.
That being said more to come soon.
http://www.aemelectronics.com/files/instructions/30-4100 Digital Wideband UEGO Gauge.pdf
http://aemelectronics.com/files/instructions/30-5130 Analog Wideband UEGO Gauge Gasoline AFR.pdf
http://www.northursalia.com/modifications/misc/wiring/04_STi_ECU.pdf
http://www.romraider.com/forum/viewtopic.php?t=6430
So reading out the way I got to work. Used a vampire tap for pin 27 on connector b136. This is the signal wire for the Tumble generator valve position sensor RH. After that opened up RomRaider Logger and checked for voltage on Tumble Valve Position Sensor Right, and Tumble Valve Position Sensor Left. As expected i could see voltage on the right sensor and nothing on the left since my TGV's have been deleted. Next i created a new logging paramater in the RomRaider logger xml file as follows.
<parameter id="P246" name="AEM Wideband gas" desc="P39" ecubyteindex="12" ecubit="0" target="1">
<address>0x000033</address>
<conversions>
<conversion units="AFR" expr="2.375*(x/50*0.004998779296875)+7.625" format="0.00" />
<conversion units="Lambda" expr="0.0006825 * x/50 + 0.6831" format="0.00" />
<conversion units="V" expr="x/50" format="0.00" />
</conversions>
</parameter>
This will allow me to log via the factory ECU my Wideband output. However, these values are still not correct and need to learn how to convert the AEM table to an integer so that it can convert the 5V signal to the correct AFR value for Gas and Lambda. Good news is by using the value of <conversion units="V" expr="x/50" format="0.00" /> i get the direct voltage output, but thats not very useful in its self.
That being said more to come soon.
So if i did this calculation correctly this should work to convert volts to AFR gasoline
2 * V + 10
To plug that into the following
<conversion units="AFR" expr="2.375*(x/50*0.004998779296875)+7.625" format="0.00" />
would look like this
<conversion units="AFR" expr="2 * x/50 + 10" format="0.00" />
Since the ECU outputs data in value of 0-255 we divide that by 50 to get voltage.
This should get me my aft according to the chart in the manual for my gauge and a calculator.. Will test on way home from work
@HolyCrapItsFast does this look right to you by chance?
Also still need to figure out calculation for Ethanol and Lambda.
Also the ECU seems to log way faster than the actual gauge does.
2 * V + 10
To plug that into the following
<conversion units="AFR" expr="2.375*(x/50*0.004998779296875)+7.625" format="0.00" />
would look like this
<conversion units="AFR" expr="2 * x/50 + 10" format="0.00" />
Since the ECU outputs data in value of 0-255 we divide that by 50 to get voltage.
This should get me my aft according to the chart in the manual for my gauge and a calculator.. Will test on way home from work
@HolyCrapItsFast does this look right to you by chance?
Also still need to figure out calculation for Ethanol and Lambda.
Also the ECU seems to log way faster than the actual gauge does.
hmm after reading here
http://www.romraider.com/forum/viewtopic.php?f=14&t=8534
on the post from dschultz it looks like his calculation is
Gasoline AFR = 1.9987 * x + 10.001
when we look at his calculation on the graph we get a very nice plot between 0 v to 5v
1.9987 * x + 10.001
1.9987 * 2 + 10.001=13.9984
However i don't like this because it seems to be off by just a hair.
So lets fire up excel and see what it does
if we use the excell formula of
=1.9987 * B1 +10.001 and populate cell b1 with 0 volts we a value of 10.001.
So values populated all the way to 18.5 you can see that its slightly off so lets try my original value of
2*V+10
excel formula =2 * G1 +10
Seems spot on for me... Now to log the two different formula's for AFR at same time, along with the actual serial output from the gauge as well and see what happens.
Will update in about 2 hours. be back soon
http://www.romraider.com/forum/viewtopic.php?f=14&t=8534
on the post from dschultz it looks like his calculation is
Gasoline AFR = 1.9987 * x + 10.001
when we look at his calculation on the graph we get a very nice plot between 0 v to 5v
1.9987 * x + 10.001
1.9987 * 2 + 10.001=13.9984
However i don't like this because it seems to be off by just a hair.
So lets fire up excel and see what it does
if we use the excell formula of
=1.9987 * B1 +10.001 and populate cell b1 with 0 volts we a value of 10.001.
| 10.001 | 0 |
| 10.2508375 | 0.125 |
| 10.500675 | 0.25 |
| 10.7505125 | 0.375 |
| 11.00035 | 0.5 |
| 11.2501875 | 0.625 |
| 11.500025 | 0.75 |
| 11.7498625 | 0.875 |
| 11.9997 | 1 |
| 12.2495375 | 1.125 |
| 12.499375 | 1.25 |
| 12.7492125 | 1.375 |
| 12.99905 | 1.5 |
| 13.2488875 | 1.625 |
| 13.498725 | 1.75 |
| 13.7485625 | 1.875 |
| 13.9984 | 2 |
| 14.2482375 | 2.125 |
| 14.498075 | 2.25 |
| 14.7479125 | 2.375 |
| 14.99775 | 2.5 |
| 15.2475875 | 2.625 |
| 15.497425 | 2.75 |
| 15.7472625 | 2.875 |
| 15.9971 | 3 |
| 16.2469375 | 3.125 |
| 16.496775 | 3.25 |
| 16.7466125 | 3.375 |
| 16.99645 | 3.5 |
| 17.2462875 | 3.625 |
| 17.496125 | 3.75 |
| 17.7459625 | 3.875 |
| 17.9958 | 4 |
| 18.2456375 | 4.125 |
| 18.495475 | 4.25 |
So values populated all the way to 18.5 you can see that its slightly off so lets try my original value of
2*V+10
excel formula =2 * G1 +10
| 10 | 0 |
| 10.25 | 0.125 |
| 10.5 | 0.25 |
| 10.75 | 0.375 |
| 11 | 0.5 |
| 11.25 | 0.625 |
| 11.5 | 0.75 |
| 11.75 | 0.875 |
| 12 | 1 |
| 12.25 | 1.125 |
| 12.5 | 1.25 |
| 12.75 | 1.375 |
| 13 | 1.5 |
| 13.25 | 1.625 |
| 13.5 | 1.75 |
| 13.75 | 1.875 |
| 14 | 2 |
| 14.25 | 2.125 |
| 14.5 | 2.25 |
| 14.75 | 2.375 |
| 15 | 2.5 |
| 15.25 | 2.625 |
| 15.5 | 2.75 |
| 15.75 | 2.875 |
| 16 | 3 |
| 16.25 | 3.125 |
| 16.5 | 3.25 |
| 16.75 | 3.375 |
| 17 | 3.5 |
| 17.25 | 3.625 |
| 17.5 | 3.75 |
| 17.75 | 3.875 |
| 18 | 4 |
| 18.25 | 4.125 |
| 18.5 | 4.25 |
Seems spot on for me... Now to log the two different formula's for AFR at same time, along with the actual serial output from the gauge as well and see what happens.
Will update in about 2 hours. be back soon
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