|
|
|
|
Thread Tools | Display Modes |
04-03-2006, 04:22 AM | #1 |
Scooby Newbie
Member#: 69071
Join Date: Aug 2004
Location: Edmonton
Vehicle:2002 Stg2-WRX Wagon WRB & Dust |
Cobb STG2 with a few extras.. How are these logs?
Took a log of my STG2+++ EJ207 today. Looks pretty good. Timing a little bit low but my MAF g/s for comparable RPM's and boost seem a lot higher than everyone elses. Anyone see any issues here? Bad MAF?
Code:
RPM TPS MAF(g/s) TMGº KC Inj% Knock MAP(PSI) 2218 100.00 44.43 14 4 15.14 0 1.451 2202 100.00 39.71 14 8 15.50 0 2.322 2241 100.00 42.18 30 8 16.73 0 2.902 2311 100.00 45.15 27 8 17.75 0 3.627 2339 100.00 48.11 25 8 18.96 0 4.353 2382 100.00 50.68 22 8 19.82 0 5.224 2422 100.00 55.15 20 8 21.19 0 5.804 2496 100.00 60.48 19 8 23.42 0 6.820 2544 100.00 65.73 15 5 24.96 0 7.835 2571 100.00 70.30 14 5 26.88 0 9.286 2649 100.00 78.36 16 8 30.52 0 10.157 2720 100.00 85.74 14 8 33.66 0 11.898 2798 100.00 97.07 13 7 37.61 0 13.639 2852 100.00 101.78 13 6 40.15 0 15.235 2939 100.00 104.71 13 6 41.38 0 15.671 3013 100.00 110.71 13 6 42.42 0 15.816 3075 100.00 112.50 11 4 43.95 0 15.961 3164 100.00 114.28 11 4 45.23 0 16.106 3261 100.00 119.01 11 4 47.99 0 16.251 3313 100.00 122.26 10 4 49.47 0 16.396 3453 100.00 128.03 11 5 52.30 0 16.541 3482 100.00 128.59 11 5 53.48 0 16.541 3585 100.00 135.12 11 5 56.59 0 16.541 3641 100.00 141.32 11 5 58.25 0 16.686 3742 100.00 143.12 12 5 59.88 0 16.686 3838 100.00 144.33 13 5 60.59 0 16.396 3910 100.00 146.45 13 5 60.89 0 15.961 3972 100.00 146.75 15 6 61.01 0 15.816 4069 100.00 151.06 16 6 64.24 0 15.671 4134 100.00 153.58 13 4 65.27 0 15.816 4178 100.00 156.17 13 4 65.96 0 15.961 4269 100.00 161.95 11 2 69.21 0 16.106 4350 100.00 165.54 10 2 70.53 0 16.106 4401 100.00 169.24 11 2 72.30 0 16.106 4499 100.00 170.98 11 3 73.90 0 16.251 4601 100.00 174.48 11 3 76.56 0 16.106 4629 100.00 173.43 12 4 77.03 0 15.961 4699 100.00 175.18 12 4 78.19 0 15.816 4753 100.00 177.27 12 4 79.08 0 15.816 4836 100.00 181.46 13 4 81.49 0 15.671 4905 100.00 185.38 14 4 82.67 0 15.671 5020 100.00 185.38 14 3 84.60 0 15.671 5037 100.00 190.61 15 3 85.96 0 15.525 5151 100.00 189.55 17 4 86.81 0 15.235 5252 100.00 193.23 18 4 87.39 0 15.090 5300 100.00 196.59 18 4 89.32 0 14.945 5346 100.00 198.83 18 4 90.09 0 14.800 5450 100.00 197.34 19 4 90.69 0 14.655 5486 100.00 200.33 19 5 91.29 0 14.510 5560 100.00 199.21 19 5 91.32 0 14.365 5639 100.00 197.71 20 5 92.63 0 14.075 5703 100.00 199.21 18 2 92.47 0 13.929 5725 100.00 202.25 18 2 92.82 0 13.784 5837 100.00 201.08 19 2 93.38 0 13.639 5873 100.00 204.20 18 2 93.97 0 13.494 5948 100.00 201.85 18 2 93.89 0 13.349 5986 100.00 200.33 19 2 93.21 0 13.059 6088 100.00 203.00 19 2 93.50 0 13.059 6088 100.00 203.40 19 2 93.50 0 12.769 6198 100.00 203.00 20 2 95.20 0 12.914 6234 100.00 202.60 22 2 94.43 0 12.769 6271 100.00 202.60 22 2 93.64 0 12.769 6334 100.00 202.60 23 2 93.24 0 12.624 6427 100.00 201.45 23 2 93.23 0 12.624 6471 100.00 203.40 23 2 93.87 0 12.624 6505 100.00 206.20 24 2 94.36 0 12.478 6573 100.00 205.40 24 2 93.95 0 12.624 6620 100.00 205.00 24 2 94.61 0 12.624 6655 100.00 205.40 24 2 93.70 0 12.624 6655 100.00 205.40 24 2 93.70 0 12.624 Smells a little rich at idle and my factory O2 states it's at 14.7 AFR. Wondering if the MAF reading is off. EGT's are normal, and peak to 1500 at the very end of this run. EGT mounted on the manifold button on drivers side.
* Registered users of the site do not see these ads.
|
04-03-2006, 10:49 AM | #2 |
Scooby Specialist
Member#: 67080
Join Date: Jul 2004
|
You're gona want to get that ProTuned with the changed compression ratio there...
|
04-03-2006, 01:14 PM | #3 |
Scooby Guru
Member#: 59993
Join Date: Apr 2004
Chapter/Region:
International
Location: WWAAYY west of the Mississippi
Vehicle:Ass, grass or cash no one rides for free!! |
^^what he said^^
|
04-03-2006, 02:53 PM | #4 | |
Scooby Specialist
Member#: 25905
Join Date: Oct 2002
Chapter/Region:
SCIC
Location: San Diego, CA
Vehicle:2003 Silver Wagon Tuned with Enginuity |
Quote:
IAM may be at 16, but it looks like the ECU is seeing some serious knock at the points I quoted above. KC should be 6+ there with the IAM at 16. Go back to the stock realtime map until you can get a real tune, otherwise you will see a thrown rod in the future due to bearing damage. |
|
04-03-2006, 05:19 PM | #5 |
Scooby Newbie
Member#: 69071
Join Date: Aug 2004
Location: Edmonton
Vehicle:2002 Stg2-WRX Wagon WRB & Dust |
I still need to toss in a catch can. Have a little oil in the intercooler which I'm pretty sure is from the valve seals. The oil may be causing some of my det problems. Also need to step down a range on the plugs.
I agree with needing a tune 100%, I only ever see WOT if I'm testing. I'm normally stuck in traffic like everyone else and barely break 30% throttle. I'm running 94 octane but in Canada that means a 10% ethanol blend. I'm waiting for some $ to pick up street tuner and a WB so I can iron out the tune. No 4 wheel dyno available anywhere remotely close yet, so log, tweak, log, tweak, log, tweak, log, tweak, log, is all I can do. Anyone know how well the knock sensor state on stays high after a knock event using ecuexplorer? My queries are running at 180ms with my current logged dataset and I think I heard 1 knock event in the run I posted but nothing on the knock sensor. |
04-03-2006, 06:38 PM | #6 |
Scooby Specialist
Member#: 25905
Join Date: Oct 2002
Chapter/Region:
SCIC
Location: San Diego, CA
Vehicle:2003 Silver Wagon Tuned with Enginuity |
Catch can and colder plugs may help the detonation a bit. I would avoid WOT until you get the thing tuned, the ST and WB will get you going in the right direction.
Trying to log knock using a logger is just about impossible, like finding a needle in a haystack. Best bet is to get a real knock sensor like the TurboXS KnockLite or KnockLink with a dedicated knock sensor. Just about necessary IMO along with the WBO2 sensor for safe tuning. |
04-03-2006, 08:59 PM | #7 |
Scooby Guru
Member#: 7327
Join Date: Jun 2001
Chapter/Region:
NWIC
Location: Seattle, WA
Vehicle:2008 Mazdaspeed3 2006 Wrangler Sport |
Yeah the Knock value on the loggers is totally useless. It's there because it exists and they figured they might as well let you log it, but you will almost NEVER see knock reported there even if you're getting bigtime knock events. It's a binary value and it only registers as 1 if the knock is happening at the exact moment the log datum is queried, which as we see in your logs, doesn't happen much.
|
04-04-2006, 02:02 AM | #8 |
Scooby Newbie
Member#: 69071
Join Date: Aug 2004
Location: Edmonton
Vehicle:2002 Stg2-WRX Wagon WRB & Dust |
Yeah, I took another pass at it tonight after reflashing the 1.30 version of the maps. IAM up to 16, KC values started betwen 7 and 10 and dwindled to 3-4 in the same places, 4k and 5.5k. Audible knock also. No more WOT until I retune. Also getting a lot of false knock at idle with the forged pistons. Valvetrain noise and piston slap are hard to listen over for minor knock events. Going to try reshim the valvetrain when I get a chance to reduce some of the ambient noise when I'm trying to listen for knock. Didn't think the .35 extra compression would make that much of a difference since I'm running 94 octane but that just goes to show how little an OTS map can handle.
|
04-04-2006, 07:50 AM | #9 |
Scooby Newbie
Member#: 48939
Join Date: Nov 2003
Location: Lenexa, KS
|
I'm not disagreeing with the advice to get tuned, but I'm curious about signs to look for when tuning.
Every car is different, right? Also, the ECU is designed to detect and compensate for knock, right? If IAM is still at 16 and the ECU has pulled some timing in a few areas to correct for knock, hasn't the ECU done its job? What if IAM was 12 but KC values were higher? The liklihood of getting knock is affected by lots of factors like gas quality, engine condition, or weather. If I were in phantomsr's shoes, how would I know the difference between, "Cool! IAM is 16 so everything is good" and "Uh-oh. The ECU's pulling timing, so time for a retune." |
04-04-2006, 01:35 PM | #10 |
Scooby Specialist
Member#: 25905
Join Date: Oct 2002
Chapter/Region:
SCIC
Location: San Diego, CA
Vehicle:2003 Silver Wagon Tuned with Enginuity |
The problem is that with a bad tune, the ECU will push the knock boundary too much and cause you to see frequent severe detonation. The ECU is also limited in what it can do to limit knock - it only pulls timing. Manifold pressure and fueling also play a large part in determining knock.
Ideally the ECU would pull timing up to a certain point, then richen up to a certain point and then start pulling boost or some combination of all 3 to control detonation. Also, trying to use your ears to detect detonation for tuning is nearly useless. If you can hear detonation, it's very severe. You need detcans to amplify knock noise to be able to listen for it in a useful way. |
04-05-2006, 02:16 PM | #11 |
Scooby Newbie
Member#: 69071
Join Date: Aug 2004
Location: Edmonton
Vehicle:2002 Stg2-WRX Wagon WRB & Dust |
yeah, pulling timing is good, but less than 10 degrees of timing at 4350 isn't the right solution in my books. I first need to eliminate other causes of excessive detonation like oil vapors, and a stage cooler plugs. I also need to get my hands on a WB02 but no one has one around here and I really don't want to buy one just for me at this point. I tried to convince the Suby dealer here to pick one up and rent it out. Sounds like they are going to do it which would be great. We have 2 dealers here, one sucks but the other is great thanks to their parts manager.
I have way to many factors outside the standard Cobb STG 2 to deal with that the map is pretty ineffective. 10% ethanol blend fuel and 8.35:1 comp pistons being the major ones. Wiseco assures you that the enhanced quench pads and crown design will eliminate any detonation caused by the slight increase in compression but this doesn't appear to be the case. It'll be some time before I have a chance to pick at the ST so I'll be running the 91 octane map on 94 in order to give me a little safeguard. |
04-05-2006, 02:42 PM | #12 |
Scooby Specialist
Member#: 25905
Join Date: Oct 2002
Chapter/Region:
SCIC
Location: San Diego, CA
Vehicle:2003 Silver Wagon Tuned with Enginuity |
Which map were those logs above done with? Stg2 91 or 93? Regardless, I would recommend that you stick with the stock map and do some datalogs to be sure the ECU thinks things are OK before doing much full throttle!
|
04-05-2006, 02:53 PM | #13 |
Scooby Newbie
Member#: 69071
Join Date: Aug 2004
Location: Edmonton
Vehicle:2002 Stg2-WRX Wagon WRB & Dust |
Bah, no more WOT until I can retune.. that's not a problem. The logs above were with the STG2 93 Octave v1.22 mpa. the logs I got of the 1.30 map were the same except I followed it from a fresh reset with IAM at 12. I think the 91 octane map will be safer than the stock map as I'd be worried about boost spike. I've only got 2600 Km's on this new engine and it's only seen WOT during ring seat and a couple logged passes. It should be good. Coated bearings with proper clearances reduce the risk of spinning a bearing. Guess my next oil ananlysis will tell how things are looking.
|
04-05-2006, 03:12 PM | #14 |
Scooby Specialist
Member#: 25905
Join Date: Oct 2002
Chapter/Region:
SCIC
Location: San Diego, CA
Vehicle:2003 Silver Wagon Tuned with Enginuity |
You might even want to use the CA Stg2 91 map as that is supposedly a bit safer than the normal Stg2 91 map... Regardless, I don't think the stock map will spike more than 15psi which is less than what you're seeing on the Stg2 map... but you won't know for sure until you try it.
|
04-06-2006, 10:40 AM | #15 |
Scooby Guru
Member#: 48199
Join Date: Nov 2003
Location: Maryland
Vehicle:06 WRX WRB |
definately return. Cobb Stg 2 wasnt designed for your internals. Which are going to make a difference, even though I'm kinda surprised its not alot worse then it is.
I'd really like to see your HP/TQ #'s after the tune. Keep us updated |
04-06-2006, 10:41 AM | #16 |
Scooby Guru
Member#: 48199
Join Date: Nov 2003
Location: Maryland
Vehicle:06 WRX WRB |
definately retune. Cobb Stg 2 wasnt designed for your internals. Which are going to make a difference, even though I'm kinda surprised its not alot worse then it is.
I'd really like to see your HP/TQ #'s after the tune. Keep us updated |
04-06-2006, 11:13 PM | #17 |
Scooby Specialist
Member#: 56321
Join Date: Mar 2004
Chapter/Region:
NESIC
Location: Hopkinton, MA
Vehicle:2006 Honda El Camino Green |
Are you just using a 2002 USDM ECU with an EJ207 motor?
|
04-07-2006, 12:49 AM | #18 |
Scooby Specialist
Member#: 103136
Join Date: Dec 2005
|
So what do you guys recommend for a knock light? The knocklite with the 4 leds or the TurboXS one? Separate knock sensor or tap into stock one?
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
stg2 with a couple extras and 6 speed wat should i run??? | mike739wrx | Transmission (AT/MT) & Driveline | 1 | 04-27-2010 08:17 PM |
How does these logs look! | emsfd125 | Open Source Reflashes | 6 | 03-03-2010 12:43 AM |
How does these logs look! | emsfd125 | Engine Management & Tuning | 2 | 02-20-2010 02:12 PM |
are these logs safe?? | need2boost | Engine Management & Tuning | 5 | 03-23-2007 12:03 PM |
anyone with Cobb Stg2 with ONLY downpipe? | Lee Chun | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 5 | 03-05-2004 12:54 AM |