Deer Killer Posted October 29, 2007 Share Posted October 29, 2007 deerkiller, read this. Despite the fact that they are describing older algorithms (02 wrx, which was far inferior as far the the knock sensor/algorithm), what they are saying is rather perpendicular to what I am saying, not counter to it. It's a very valid concern that a tuner can sabotage this system so it means nothing. Hell, even the original log might be perfectly normal because the DA/TA map is messed up. Would not be a tune I'd want to run. Link to comment Share on other sites More sharing options...
boostsr20 Posted October 29, 2007 Share Posted October 29, 2007 know whats interesting? they use the same EM as we do, save for subaru's patented knock detection/control strategy. Really? Thats interesting. My brothers MS6 has audible pinging in high load areas and its %100 stock. I think they tuned it a little to aggresively if the ECU can't keep up. Link to comment Share on other sites More sharing options...
2005garnetGT Posted October 29, 2007 Share Posted October 29, 2007 Despite the fact that they are describing older algorithms (02 wrx, which was far inferior as far the the knock sensor/algorithm), what they are saying is rather perpendicular to what I am saying, not counter to it. It's a very valid concern that a tuner can sabotage this system so it means nothing. Hell, even the original log might be perfectly normal because the DA/TA map is messed up. Would not be a tune I'd want to run. I've seen TDC maps, they don't look like that. and thats subarus patented knock control strategy, look around, jon [in CT] has posted PDFs detailing it. subaru didn't change the strategy between 16bit and 32bit ecus as far as merchgod has said Link to comment Share on other sites More sharing options...
Deer Killer Posted October 29, 2007 Share Posted October 29, 2007 I've seen TDC maps, they don't look like that. Good, then my original comment which mickeyd2005 took as being completely wrong, still applies. and thats subarus patented knock control strategy, look around, jon [in CT] has posted PDFs detailing it. subaru didn't change the strategy between 16bit and 32bit ecus as far as merchgod has saidI would only trust the source code of the firmware, but link to the pdf please. This is a negative feedback tuned system, I'm surprised it's even patentable, but I hear the color green is patented too This system has certainly changed in the past few years (for the better), how is the question. Link to comment Share on other sites More sharing options...
DrewLGT Posted October 29, 2007 Author Share Posted October 29, 2007 wow this thread really blew up. to answer the question about what map i'm running, it's the cobb 1.15. i never downloaded the 1.16 91 oct map. i was initially running the 1.16 93oct but it knocked like hell. does this log look bad enough to warrant a reflash to the 1.16? and how can i know if the winter gas here is a lower octane? Link to comment Share on other sites More sharing options...
Deer Killer Posted October 29, 2007 Share Posted October 29, 2007 1.15 isn't turned for 10% ethanol, it will be lean. That is nationwide all the time isn't it? Link to comment Share on other sites More sharing options...
DrewLGT Posted October 29, 2007 Author Share Posted October 29, 2007 1.15 isn't turned for 10% ethanol, it will be lean. That is nationwide all the time isn't it? so a reflash to the 1.16 map should fix the problem? Link to comment Share on other sites More sharing options...
2005garnetGT Posted October 29, 2007 Share Posted October 29, 2007 Good, then my original comment which mickeyd2005 took as being completely wrong, still applies. I would only trust the source code of the firmware, but link to the pdf please. This is a negative feedback tuned system, I'm surprised it's even patentable, but I hear the color green is patented too This system has certainly changed in the past few years (for the better), how is the question. search around, I have midterms to study for. Link to comment Share on other sites More sharing options...
boostsr20 Posted October 29, 2007 Share Posted October 29, 2007 1.15 isn't turned for 10% ethanol, it will be lean. That is nationwide all the time isn't it? Not 100% yet but its getting there. Here in michigan teh pump will say how much ethanol is in the mix. Link to comment Share on other sites More sharing options...
Deer Killer Posted October 30, 2007 Share Posted October 30, 2007 so a reflash to the 1.16 map should fix the problem? Can't hurt to try Link to comment Share on other sites More sharing options...
DrewLGT Posted October 30, 2007 Author Share Posted October 30, 2007 Can't hurt to try i flashed to the 1.16 map, drove out to my favorite logging spot and apparently hit the front defrost button. so no log. i'll try again this weekend. Link to comment Share on other sites More sharing options...
Legacy05 Posted October 30, 2007 Share Posted October 30, 2007 Yeah I forgot to totally log my car last night too .. hehe ... Link to comment Share on other sites More sharing options...
Legacy05 Posted October 31, 2007 Share Posted October 31, 2007 Question, I logged my car last night on the COBB OTS AZCA 91 Oct Stage 2 map. In terms of knock and the air-flow readings, what should I be looking for. I believe here in AZ we are a couple thousand feet above sea level .. so I don't if that affects anything. Air flow seems a bit better, but the best I saw was in the 221-223 range .... and my car was still pulling timing, not as much as I was on the TDC map ... the two are actually pretty close with the COBB one being a bit better. Link to comment Share on other sites More sharing options...
eqt2010 Posted October 31, 2007 Share Posted October 31, 2007 I haven't had any luck with a local tuner here ... you think those logs look bad, take a look at this. :eek::eek: It's amazing that your engine is still alive after running that map for a while. Link to comment Share on other sites More sharing options...
biz77 Posted October 31, 2007 Share Posted October 31, 2007 I haven't had any luck with a local tuner here ... you think those logs look bad, take a look at this. Why is IAM still at "1" with timing being pulled this aggressively? Link to comment Share on other sites More sharing options...
rao Posted October 31, 2007 Share Posted October 31, 2007 IAM is based on part throttle knock. Rob IF YOU CARE ABOUT YOUR CAR YOU SHOULD NEVER DRIVE IT Link to comment Share on other sites More sharing options...
biz77 Posted October 31, 2007 Share Posted October 31, 2007 My understanding is that the rough correction, which controls IAM, is based on load and RPM. Basing it off the stock correction tables, much of Legacy05's log would fall within the correction range. Link to comment Share on other sites More sharing options...
Legacy05 Posted November 1, 2007 Share Posted November 1, 2007 So is my car ok??? is it not ok??? Here is the COBB run ...enginuitylog_20071030_205104.pdf Link to comment Share on other sites More sharing options...
eqt2010 Posted November 1, 2007 Share Posted November 1, 2007 So is my car ok??? is it not ok??? Here is the COBB run ... Looks better. Still some knocks in low 3k rpm. Link to comment Share on other sites More sharing options...
Legacy05 Posted November 1, 2007 Share Posted November 1, 2007 Thanks ... second question, I am running the COBB OTS AZCA 91 Oct Stage 2 map ... I thought about trying out just the plain OTS Stage 2 map, non AZCA .. but do I have to switch the base map as well? Or can I just load up the real-time OTS Stage 2 map? Link to comment Share on other sites More sharing options...
biz77 Posted November 1, 2007 Share Posted November 1, 2007 So is my car ok??? is it not ok??? Here is the COBB run ... No. On your original log there was considerable timing pulled all the way through the rev range. I'm trying to figure out why the IAM hasn't been decreased, since my understanding is the rough knock correction (responsible for IAM) should be functioning between ~2,000 and 5,000 RPM's and loads as high as ~2.7 (per stock correction tables). I believe Rao's answer was indicating that at these loads, only feedback correction would be active??? Link to comment Share on other sites More sharing options...
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