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Old 10-26-2011, 12:35 AM   #851
NSFW
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Quote:
Originally Posted by fastblueufo View Post
I've met a software engineer fixing to retire. He just opened a private shop near me with a dyno. He has a vw that he has been able to hack the ecu and do some stuff that's preety nice. He got very interested in this platform when I showed him how far os has gotten with subaru. Hopefully I can get him onboard with romraider soon. He seemed to know exactly how to go about implimenting live tuning since he had done it on his vdub.
If he wants a head start with 32-bit ECUs I'll be happy to point him to some tools that help a lot. For me, having good tools made the difference between wishing I could modify my ECU's code, actually doing it. Everything I've done is shared at RomRaider already (or will be shortly), but a roadmap couldn't hurt.
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Old 10-26-2011, 08:46 AM   #852
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Quote:
Originally Posted by elevenpoint7five View Post
This is a damn good idea! I might code it up and see how it works on my car, if so I can probably offer a patch for whatever ecu/ecu's you need. Though it will be a little while as I'm pretty busy with work right now.

Andy
I lied... his post was on here: http://www.romraider.com/forum/viewt...hp?f=14&t=7731
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Old 11-07-2011, 09:54 PM   #853
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Just read the hole thread ufff. You guys are awesome.
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Old 11-26-2011, 10:07 AM   #854
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I know there are quite a few people running this ROM. A few of us have seen the AFR's lean out as the temp rises. A couple different opinions on this on romraider.
Starts here http://romraider.com/forum/viewtopic...7594&start=810
continues here http://romraider.com/forum/viewtopic.php?f=15&t=7841

Maxwell Power, ride5000, blueufo hope you guys see this.
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Old 11-26-2011, 11:21 AM   #855
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I will post some logs in rr if temps rise enough.
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Old 01-14-2012, 10:59 PM   #856
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Quote:
Originally Posted by JSarv View Post
Lets do a reference:
3000
30psiA (15.3psiG @ sea level)
@ 30psiA and 3000 rpms SD Load Compensation is a conservative 5%.

30*(0.0764448)+(-0.00683594)*1.05= 2.40 G/Rev

So @ 3000 rpms and 30psiA (15.3psi relative) you will have a load value of 2.40 G/Rev. This is theoretical...
im just starting out learning SD. so i hope im not just being a noob. but your equation doesn't equal 2.40
idk if you just rounded up or if the math needs to be exact.

but i come up with 2.28616626

just wondering how/why you used 2.40 as the g/rev when it isnt what the math comes out too.

again just trying to learn. thanks.

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Old 04-20-2012, 12:15 AM   #857
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Question regarding IAT sensor and methanol jet placement...

-I have heard some conflicting information, the way I see it is the IAT sensor should be placed as close to the head as possible or at least midway through the runner (so heat from the valves isn't transferred), and the methanol near/before the throttle body.
So the cooler air charge going into the engine is measured by the IAT.

Contradictory information:
-In a MAF based system the airflow in doesn't change when the meth is spraying, the charge temp is just lower and the burn speed is slowed but the mani. pressure did not change with the methanol injection.
-In a SD system, if there is a significant drop in IAT, the IAT sensor will trigger the ECU to add more fuel when in fact the airflow into the engine isn't changing causing the car to run rich.

PLEASE HELP!

Hope I made sense.
Thanks in advance.
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Old 04-20-2012, 02:02 PM   #858
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you really ought to have a completely different fuel map for spraying meth ADI.
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Old 09-12-2012, 01:22 PM   #859
skets
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Just to confirm will there be an issue running this ROM on either my JDM 03 WRX or 03 STi ECU?
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Old 09-12-2012, 01:29 PM   #860
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Any further discussion on 16-bit Speed Density should happen here :
http://www.romraider.com/forum/viewforum.php?f=36
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Old 04-01-2013, 05:30 AM   #861
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Any one have any info on the 32bit I would love to go with out a maf on a ADM 06 STI A8DH200V
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Old 04-01-2013, 03:56 PM   #862
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All the sd info is on romraider.

There is a speed density subforum
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Old 06-21-2013, 10:41 AM   #863
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Do u have the injector scaling for this map with 800cc sard injectors on an 03 wrx STi jdm?
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Old 06-21-2013, 12:18 PM   #864
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Quote:
Originally Posted by Amaan_ej20 View Post
Do u have the injector scaling for this map with 800cc sard injectors on an 03 wrx STi jdm?
Quote:
Originally Posted by MRF582 View Post
Any further discussion on 16-bit Speed Density should happen here :
http://www.romraider.com/forum/viewforum.php?f=36
12345
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Old 07-22-2013, 08:05 PM   #865
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I have a question. I've got a new ecu / engine setup for my track car. It would seem the previous tune hasn't accounted for the big injectors properly. They are set to 575cc, they're ID1000's on E85.

And I think to get around this, the previous person has changed the SD base load table to fix it.

My question is - can anyone actually look at this and give me an idea of the proper numbers? I think proper injector size for ID1000 is 650cc (for E85). But then I imagine the SD base load table would be wrong. And then I'd like to have proper figures in the fueling table - not 8's and 6's!!! PLEASE HELP The engine is EJ207/DOM3XTR running 25 psi.



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Old 07-22-2013, 08:11 PM   #866
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I would not even use that map. Whoever made it has no idea what they are doing with SD. The Scaling for ID1000s would be around 900 but that depends on your latency table.
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Old 07-22-2013, 08:30 PM   #867
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Quote:
Originally Posted by Clark Turner View Post
I would not even use that map. Whoever made it has no idea what they are doing with SD. The Scaling for ID1000s would be around 900 but that depends on your latency table.
Tell me about it, it's extremely frustrating how bad this is given how much power it's making... dissapointing indeed.

So, if I'm to start the fuel map from scratch, how might I do this, I don't have a MAF in the system at all btw so I can't log it and come up with a VE table.

Car has ID1000 with E85. Found the ID1000 latency table (online version), think these are the figures. The ecu's figures were out from this also.

6.5 .. 3.98
9.0 .. 2.34
11.5 .. 1.47
14.0 .. 1.06
16.5 .. 0.84

Also here is the other offset info:


Last edited by bazza; 07-22-2013 at 08:35 PM.
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Old 07-22-2013, 08:35 PM   #868
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That map points to a classic lack of fuel pump. As the car makes more power on the top end, the fuel pump cant keep up. The tuner then tries to make up for this by putting really low fuel targets and skewing the VE table.

So even if you did straighten all of this out, Its probably going to be lean as hell on boost up top.

The difference between me and a lot of the so called tuners is that if this kind of thing happens, I get out and say, the car needs a pump, lines and regulator. Sometimes they get mad. Sometimes they listen to me.

So let us know the setup. Let me guess? A single walbro and stock lines?

C
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Old 07-22-2013, 08:44 PM   #869
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Looks like they used the stock groupn ve map and tried to adjust fueling with the fuel target map. I'd be surprised if the timing table has even been adjusted from the stock map.
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Old 07-22-2013, 08:45 PM   #870
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Quote:
Originally Posted by Clark Turner View Post
That map points to a classic lack of fuel pump. As the car makes more power on the top end, the fuel pump cant keep up. The tuner then tries to make up for this by putting really low fuel targets and skewing the VE table.

So even if you did straighten all of this out, Its probably going to be lean as hell on boost up top.

The difference between me and a lot of the so called tuners is that if this kind of thing happens, I get out and say, the car needs a pump, lines and regulator. Sometimes they get mad. Sometimes they listen to me.

So let us know the setup. Let me guess? A single walbro and stock lines?

C
Okay, I'll back the truck up a little and explain. The donor street car indeed had a walbro. I pinched the loom, ecu, turbo, engine, cluster and stuck it in my time attack car (gc8) which has plenty of fuel pump and far better fuel system. I just love using the stock ECU and it's huge ability to do pretty much whatever I want it to do.

So being a picky person, I've gone through the tune and instantly found the fuel side of things is rubbish as you picked up on - and I'd LOVE to fix it but I'm trying to get my head around how the SD works, slowly picking it up.

At least the timing table looks okay lol.
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Old 07-22-2013, 08:49 PM   #871
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Quote:
Originally Posted by bazza View Post
Okay, I'll back the truck up a little and explain. The donor street car indeed had a walbro. I pinched the loom, ecu, turbo, engine, cluster and stuck it in my time attack car which has plenty of fuel and far better fuel system. I just love using the stock ECU and it's huge ability to do pretty much whatever I want it to do.

So being a picky person, I've gone through the tune and instantly found the fuel side of things is rubbish as you picked up on - and I'd LOVE to fix it but I'm trying to get my head around how the SD works, slowly picking it up.

At least the timing table looks okay lol.

First note that the tables are in absolute pressure so subtract 14.7psi in your head to figure out what gauge pressure is. Then set your primary open loop table to the afr values you would like the engine to run at each pressure and rpm cell. Then tune the sd load comp(ve) map to achieve your afr targets.
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Old 07-22-2013, 08:53 PM   #872
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Quote:
Originally Posted by Carbibbles View Post
First note that the tables are in absolute pressure so subtract 14.7psi in your head to figure out what gauge pressure is. Then set your primary open loop table to the afr values you would like the engine to run at each pressure and rpm cell. Then tune the sd load comp(ve) map to achieve your afr targets.
Will give it a go. For interest sake, do you think there is a way I can roughly calculate the proper figures? My dyno is about 300 miles away
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Old 07-23-2013, 12:04 AM   #873
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New fuel and base load compensation map. I basically took the known AFR's (from WOT dyno tune) and adjusted the base load compensation table to fix that issue. Then I set the actual AFR table to more realistic AFR targets. Know I just have to go test and hopefully fine tune (hopefully not a huge amount of fine tuning haha).




Last edited by bazza; 07-23-2013 at 12:11 AM.
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Old 07-23-2013, 12:25 AM   #874
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Quote:
Originally Posted by bazza View Post
Okay, I'll back the truck up a little and explain. The donor street car indeed had a walbro. I pinched the loom, ecu, turbo, engine, cluster and stuck it in my time attack car (gc8) which has plenty of fuel pump and far better fuel system. I just love using the stock ECU and it's huge ability to do pretty much whatever I want it to do.

So being a picky person, I've gone through the tune and instantly found the fuel side of things is rubbish as you picked up on - and I'd LOVE to fix it but I'm trying to get my head around how the SD works, slowly picking it up.

At least the timing table looks okay lol.

Ok. Just understand that fixing the map may cause the engine to run very very lean on boost.

C
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Old 07-23-2013, 12:34 AM   #875
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Originally Posted by Clark Turner View Post
Ok. Just understand that fixing the map may cause the engine to run very very lean on boost.

C
Hi Clark, please check the above tables and tell me what you think? I've adjusted a few things in both tables (using calculations from carbibbles original post on romraider), obviously changing the AFR table alone will end in tears!!! Cheers
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