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RomRaider
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drees
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Post subject: Posted: Mon May 15, 2006 11:30 pm |
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| RomRaider Developer |
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Joined: Thu Mar 23, 2006 9:21 am Posts: 454 Location: San Diego, CA
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For some reason the ECU thinks you are getting severe knock. Something is VERY wrong!
Just from looking at the area where the IAM goes from 12 to 0, nothing looks to be severely off (IE, TPS, boost, MAF, A/F ratio look normal). Your map looks OK as far as I can tell.
I would go back to an unaltered stock map and see what happens.
Definitely when testing a new map, start off easy while watching the logs before going for a full-run.
Last edited by drees on Thu Jun 01, 2006 6:21 pm, edited 1 time in total.
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ev8siv3
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Post subject: Posted: Mon May 15, 2006 11:55 pm |
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Joined: Fri Mar 24, 2006 7:14 pm Posts: 768
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Switch your Rev Limit IGN Retard back to 1.41, this has not been confirmed to do anything yet and may be your problem.
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mr_yellow
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Post subject: Posted: Thu May 18, 2006 10:51 pm |
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Joined: Sun May 07, 2006 6:53 pm Posts: 8
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Just wanted to report back finally...
I made the IGN rev limit change from 4.92 (or whatever it was) back to the stock value of 1.41. I also set my initial IAM to 8 just in case.
I flashed and it ran well! w00t! Butt Dyno definitely noticed a difference at the lower rpms 2.5-3.5k, but the troubling thing now is I totally feel a lack in top end which is invariably caused by restriction in the exhaust. =)
Thank you ev8siv3 for posting the maps and helping me out with everything. I am definitely learning a ton and now will tackle tuning the values on my own (with some help of course).. =)
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bluesubaru
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Post subject: image Posted: Thu Jun 01, 2006 4:49 pm |
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Joined: Wed May 24, 2006 2:15 am Posts: 9
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Now that we can upload Rom images again;
Mr_yellow do you want to post yours, so us beginners can have a place to start? I have a 2003 MT with an uppipe and intercooler hoses.
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jhargis
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Post subject: noob Posted: Fri Jun 02, 2006 3:40 am |
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Joined: Sun May 28, 2006 4:00 am Posts: 5
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I agree, some of the stock boost map points do some funny things in my understanding, so I'm quite curious to see how cobb makes the boost curve more responsive in the low end along with how the bcs duty cycle was changed. I don;t really want to get as aggresive as the stage 2 map, but I'd like to see how cobb does it and make my own map using a similar pattern.
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merchgod
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Post subject: Re: noob Posted: Fri Jun 02, 2006 5:23 am |
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| RomRaider Donator |
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Joined: Thu Mar 30, 2006 2:38 am Posts: 5336
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jhargis wrote: I agree, some of the stock boost map points do some funny things in my understanding, so I'm quite curious to see how cobb makes the boost curve more responsive in the low end along with how the bcs duty cycle was changed. I don;t really want to get as aggresive as the stage 2 map, but I'd like to see how cobb does it and make my own map using a similar pattern.
No Cobbs maps are allowed to be posted on this forum, regardless of if they are a duplicate copy or if the values are transferred over to a stock map. You can go to this website: http://www.osecuroms.org/ .
After you register, you wil be able to download staged maps created by enthusiasts that are not copies of another tuner's maps.
As far as improving your low end, you can add boost in your lower TPS columns. You then can log and see if you are hitting your target boost at those throttle positions or spiking. If you are short of the target boost, then you would want to raise your WDC% in the respective cell. If you are going above target boost (spike), you would want to lower the WDC. Tuning for boost is time consuming, with a lot of trial and error. Most maps have a high wastegate cycles in the 2450 rpm and below rows to improve spool (including the stock map). You can leave these values stock for most setups. The 2550 rpm row has the next highest values, but not as high as the earlier values. You start hitting appreciable boost here with a stage 2 setup, so you don't want the high values of the earlier rpm cells or you might spike, but you still want to be a little higher than normal to further spool. After that, it is a matter of getting the right WDC% to produce the target boost you want. Of course, you need to taper down the values in the high rpm rows as you taper down boost as well.
Best thing to do is not change both WDC% and boost at the same time. Setup your boost where you want it and start off with low WDC%, to avoid spiking. Then log your boost and if you aren't hitting close to your target, then slowly raise the WDC%.
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jhargis
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Post subject: Posted: Sun Jun 04, 2006 7:45 am |
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Joined: Sun May 28, 2006 4:00 am Posts: 5
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Understood. I'm really not looking to copy what cobb does number for number, I just wanted to take a look at the patterns that some tuners use (cobb, vishnu, etc.) in their boost maps so I could scale it down a bit and make a conservative and very safe map for my car. I'm looking for safe gains in the 15-20 peak hp range and bringing the boost in a little earlier. I'm honestly not looking to directly rip off anybody's hard work, I'm just here to learn. I do appreciate th advice though, this will help, thanks.
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merchgod
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Post subject: Posted: Sun Jun 04, 2006 3:04 pm |
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| RomRaider Donator |
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Joined: Thu Mar 30, 2006 2:38 am Posts: 5336
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jhargis wrote: Understood. I'm really not looking to copy what cobb does number for number, I just wanted to take a look at the patterns that some tuners use (cobb, vishnu, etc.) in their boost maps so I could scale it down a bit and make a conservative and very safe map for my car. I'm looking for safe gains in the 15-20 peak hp range and bringing the boost in a little earlier. I'm honestly not looking to directly rip off anybody's hard work, I'm just here to learn. I do appreciate th advice though, this will help, thanks.
Yeah, I understand. Cobb pretty much leaves the 12/24% columns stock on the stage 2 maps. In the 36+ columns that run some high part-throttle boost - high 13's, then 14's, then 15's, finishing up in the 16's. Boost tapers to about the 12's at the highest rpm. They also add more boost in the 2380/2450 column to improve spool. I've been working on my own boost map. I run 0's in the 12 column, with target boost of 4/24, 8/36, 12/50, 14/63, 15/76-88, and 17/100. Of course, tapering at 5600 rpm. I'm still working on my boost map, doing a lot of logging.
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jhargis
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Post subject: duty cycle Posted: Tue Jun 06, 2006 4:02 am |
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Joined: Sun May 28, 2006 4:00 am Posts: 5
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I was playing around with the boost values today, and I managed to get boost to rise in a pretty stable manner, no spiking at full throttle, but I still get some minor spiking in the midrage throttle positons (1-2psi). I'm having a hard time getting this quite right on the wastegate duty cycle... seems pretty touchy on my car in the middle there. What are you putting in as far as wdc values? Thanks.
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merchgod
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Post subject: Posted: Tue Jun 06, 2006 5:46 am |
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| RomRaider Donator |
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Joined: Thu Mar 30, 2006 2:38 am Posts: 5336
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Each car will vary depending on mods. There is usually a pattern of increasing wastegate duty as you go up in throttle position. On mine, I run 60's in the 86-100 column. Then about 10 less for each throtte column as you go down. This is just a starting point for me - I'm just starting to mess around with it. I would come up with lower wastegate values than you will need and then see if you are hitting the target boost. If not, then slowly ramp them up until you see a spike and then back it off. It will take a lot of logging and changing.
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ev8siv3
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Post subject: Posted: Tue Jun 06, 2006 5:01 pm |
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| Experienced |
Joined: Fri Mar 24, 2006 7:14 pm Posts: 768
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I would also recommend setting your Turbo Dynamics towards 0% if you are working solely on your WG DC and achieving boost close with that. After you get close then you can adjust your BURST and continuous to try and hit and maintain.
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merchgod
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Post subject: Posted: Tue Jun 06, 2006 8:01 pm |
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| RomRaider Donator |
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Joined: Thu Mar 30, 2006 2:38 am Posts: 5336
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ev8siv3 wrote: I would also recommend setting your Turbo Dynamics towards 0% if you are working solely on your WG DC and achieving boost close with that. After you get close then you can adjust your BURST and continuous to try and hit and maintain.
If the turbo dynamics % can be found in RAM, this could be logged and would tell you how the ECU is changing duty cycles to try and hit your target boost. This could speed up wastegate duty tuning quite a bit.
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ev8siv3
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Post subject: Posted: Tue Jun 06, 2006 8:52 pm |
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Joined: Fri Mar 24, 2006 7:14 pm Posts: 768
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merchgod wrote: ev8siv3 wrote: I would also recommend setting your Turbo Dynamics towards 0% if you are working solely on your WG DC and achieving boost close with that. After you get close then you can adjust your BURST and continuous to try and hit and maintain. If the turbo dynamics % can be found in RAM, this could be logged and would tell you how the ECU is changing duty cycles to try and hit your target boost. This could speed up wastegate duty tuning quite a bit.
Trust me, already on that lol. Just waiting on some more RAM dumps.
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merchgod
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Post subject: Posted: Tue Jun 06, 2006 9:53 pm |
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| RomRaider Donator |
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Joined: Thu Mar 30, 2006 2:38 am Posts: 5336
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ev8siv3 wrote: Trust me, already on that lol. Just waiting on some more RAM dumps.
Sweet. 
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