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02-24-2018, 10:22 AM | #1776 |
Scooby Newbie
Member#: 482358
Join Date: Feb 2018
Chapter/Region:
RMIC
Location: Sandy, UT
Vehicle:2015 WRX Stage2+ Silver |
1st post here, got my 2015 WRX in July, completely stock. Just last week I got an AP and this week I installed the Cobb BigSF intake. I'm running the Stage 1+ 91 octane HWG.
https://datazap.me/u/toastlover/cobb...5-8-9-10-18-19 From what I can tell (by reading a bunch of these logs in this and the Cobb development thread), everything seems pretty normal. I was getting a bit nervous because my AF Learning 1 was hanging out at ~ +17 cruising. My daily commute is only 3 miles though so the car was never really warmed up, plus I only put maybe 70 miles on it since flashing. Drove for quite a while this morning on the freeway when I got off work to get a good 3rd gear pull though and looks good. Anyway, if anybody notices anything off with this log, I'd appreciate a response. I am a bit curious if the boost is supposed to drop as it approaches redline. EDIT: just realized I forgot to add comm fuel final AFR to my log. Next one I will.
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02-24-2018, 10:28 AM | #1777 | |
Scooby Specialist
Member#: 419593
Join Date: Apr 2015
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02-24-2018, 11:23 AM | #1778 |
Scooby Specialist
Member#: 450808
Join Date: Jul 2016
Chapter/Region:
SCIC
Location: Anaheim
Vehicle:2017 WRX Premium WR Blue Pearl |
Don't know what the ambient temp was for his pull but manifold temps were in the mid 30s so the cold weather may have played a part in the low boost. It does seem very lean though.
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02-24-2018, 02:19 PM | #1779 | |
Scooby Newbie
Member#: 478447
Join Date: Nov 2017
Chapter/Region:
NESIC
Location: CT
Vehicle:2018 WRX WR Blue |
Quote:
a protune with cobb might be a better/safer process than OTS then? (New to the modding my daily scene...) |
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02-24-2018, 02:30 PM | #1780 |
Scooby Specialist
Member#: 419593
Join Date: Apr 2015
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You can run the MAP tune. It should be fine and with the AP you can monitor lots of things. I would suggest reading this thread. I learned a lot just in this very thread. An etune is just more precise to your specific car. You can buy the AP from MAP and then Ian will email you their OTS tune for free. I would start from there and if you run into issues you can move on to a etune.
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02-24-2018, 03:45 PM | #1781 | |
Scooby Specialist
Member#: 460907
Join Date: Jan 2017
Chapter/Region:
RMIC
Location: Colorado
Vehicle:2020 Golf GTI |
Quote:
At first you hit boost target but are unable to sustain it and it drops off really quick. Might be another indication of a leak. Check the installation on the Big SF first. |
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02-24-2018, 08:43 PM | #1782 | |
Scooby Newbie
Member#: 482358
Join Date: Feb 2018
Chapter/Region:
RMIC
Location: Sandy, UT
Vehicle:2015 WRX Stage2+ Silver |
Quote:
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02-24-2018, 08:53 PM | #1783 |
Scooby Specialist
Member#: 460907
Join Date: Jan 2017
Chapter/Region:
RMIC
Location: Colorado
Vehicle:2020 Golf GTI |
With AF Learning that high at cruise it really indicates some kind of leak. Your car was constantly adding 17% more fuel in order to hit correct AFRs at low load, so when you went wide open throttle and transitioned into open loop there was no way for your car to correct the problem on its own (AF Learning is disabled during open loop fueling), hence you running really lean.
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02-24-2018, 09:30 PM | #1784 |
Scooby Newbie
Member#: 482358
Join Date: Feb 2018
Chapter/Region:
RMIC
Location: Sandy, UT
Vehicle:2015 WRX Stage2+ Silver |
Thanks, I'll definitely get it on ramps and make sure all the connections are tight. I work the next 4 nights in a row and have school in the mornings so I probably won't get to it until Thursday. I wont go into boost until I've fixed it.
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02-25-2018, 06:04 PM | #1785 |
Scooby Specialist
Member#: 453427
Join Date: Aug 2016
Chapter/Region:
MWSOC
Location: Detroit, MI
Vehicle:2017 WRX Crystal White Pearl |
General question time.
On certain intakes doesn't filter placement relative to the MAF matter? I recall Grimmspeed on my buddies FR-S saying exactly 1 inch from the MAF housing. Could misplacement throw off scale enough to where it could affect AFR? |
02-25-2018, 07:07 PM | #1786 |
Scooby Newbie
Member#: 482358
Join Date: Feb 2018
Chapter/Region:
RMIC
Location: Sandy, UT
Vehicle:2015 WRX Stage2+ Silver |
I got under the car today and made sure there were no leaks, adjusted a few things. The intake fits much more snug in the bay after now, which is nice. Took it out, it is still running lean and underboosting right after it hits peak boost. This log doesn't show it but I have another where it hit 19psi and dropped to 16 for the rest of the pull. Also, why does the built in boost gauge not match the AP boost gauge? It is also 30F here currently and I'm at 4000ft altitude if that matters at all, but I thought TD Boost Error took that into its measurements
https://datazap.me/u/toastlover/log-...-9-10-11-19-20 The instructions for the CobbSF say exactly one inch, I've seen some other posts around here where people pulled it off like 1/8th of an inch and have seen some better numbers. I'll try that next since it's so simple. Any other advice before I just go back to the stock intake? Thanks for all your help btw. |
02-25-2018, 07:10 PM | #1787 | ||
Scooby Specialist
Member#: 450808
Join Date: Jul 2016
Chapter/Region:
SCIC
Location: Anaheim
Vehicle:2017 WRX Premium WR Blue Pearl |
Quote:
Quote:
It's also why I suspect a lot of guys with BigSF intakes have issues. |
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02-25-2018, 07:39 PM | #1788 | |
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Member#: 419593
Join Date: Apr 2015
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Quote:
There are some serious issues with that log. It is crazy lean, boost falls off a cliff and it is knocking too. Don't do any more pulls. Get rid of that intake ASAP and get an e-tune. |
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02-25-2018, 07:54 PM | #1789 |
Scooby Newbie
Member#: 482358
Join Date: Feb 2018
Chapter/Region:
RMIC
Location: Sandy, UT
Vehicle:2015 WRX Stage2+ Silver |
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02-25-2018, 08:19 PM | #1790 |
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Member#: 419593
Join Date: Apr 2015
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Toasty, here is my old log with the COBB stage 1 tune on 93 gas. I checked off the values you want to look at. Taget boost, comm fuel final afr and af sens 1 ratio afr as well as feeback and fine knock learn. The comm fuel final is what the tune is calling for and af sens is what your car is doing. You want these two as close as possible. You don't want the af sens to be higher than comm because that indicates a lean condition. Most people using the stage 1 COBB tunes run rich.
https://datazap.me/u/e90/map-vs-cobb...28-31-32-40-44 VS https://datazap.me/u/toastlover/log-...9&zoom=418-812 |
02-26-2018, 12:45 AM | #1791 |
Scooby Newbie
Member#: 482358
Join Date: Feb 2018
Chapter/Region:
RMIC
Location: Sandy, UT
Vehicle:2015 WRX Stage2+ Silver |
Thanks a lot everyone. I'll remove the intake in a couple days and post another log. No boosting in it until then
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02-26-2018, 12:08 PM | #1792 | |
Scooby Specialist
Member#: 327563
Join Date: Jul 2012
Chapter/Region:
MWSOC
Location: Cincinnati
Vehicle:2018 Civic Type R 2008 N54 335i |
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02-26-2018, 12:46 PM | #1793 | |
Scooby Newbie
Member#: 410759
Join Date: Jan 2015
Location: Charleston, SC
Vehicle:2015 WRX Dark Gray |
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i'm due for a few more pulls til it is done I think (trying not to email Ron while he's on vacation - felt bad enough sending that one!) but was bored and wanted to get a little bit of feedback on how it was looking. |
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02-26-2018, 01:13 PM | #1794 | |
Scooby Specialist
Member#: 327563
Join Date: Jul 2012
Chapter/Region:
MWSOC
Location: Cincinnati
Vehicle:2018 Civic Type R 2008 N54 335i |
Quote:
Cobb.... Well we all know how well that is by now. |
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02-26-2018, 02:12 PM | #1795 |
Scooby Newbie
Member#: 446029
Join Date: May 2016
Location: 510
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+1 for PRL if you are looking for a 3" intake.
I was able to reduce WGDC 10-15% across the board and hold boost better at higher revs. |
02-26-2018, 03:59 PM | #1796 |
Scooby Specialist
Member#: 327563
Join Date: Jul 2012
Chapter/Region:
MWSOC
Location: Cincinnati
Vehicle:2018 Civic Type R 2008 N54 335i |
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02-26-2018, 06:08 PM | #1797 |
Scooby Newbie
Member#: 473534
Join Date: Aug 2017
Location: Kansas City, MO
Vehicle:15 WRX Prem. w/ HK CWP |
First time posting in this section. Just got my MAP Stage 1 OTS 91 Octane tune loaded this morning. Drove around to get AF learning sorted out and then tried a few pulls this afternoon.
First chart kinda surprised me. I didn't see any FBK or FKL reported on the gauges of the AP. Looks like it learned out too quick to catch. Probably something non-engine related as the rest of the parameters look good to me. Data log 5 if it groups them all together for you all: https://datazap.me/u/nine5raptor/log...a=5-9-10-11-19 Second one was clean. Data log 4 if it groups them all together for you all: https://datazap.me/u/nine5raptor/log...a=5-9-10-11-19 I'm new to Subarus, but previously had a direct injected turbo MINI, tuned with an AP. Also, for reference, I am a super conservative (tuning wise) engineer, so I am running the 91 tune on BP 93 octane fuel. Ambient temps were 63F out for these runs and the RPM range is a little shortened, due to keeping it safe on the road. Would appreciate any comments. Thanks Edit: I'm underboosting a little, but I am ok with that. |
03-01-2018, 01:08 PM | #1798 |
Scooby Newbie
Member#: 482358
Join Date: Feb 2018
Chapter/Region:
RMIC
Location: Sandy, UT
Vehicle:2015 WRX Stage2+ Silver |
Okay I switched back to the stock intake and the OTS 91 map.
Still running slightly lean and underboosting a little. It's like 35 degrees here. Is there anything wrong here still? It looks a lot better but it's still not great. https://datazap.me/u/toastlover/ots-...3-5-7-10-11-19 |
03-01-2018, 09:23 PM | #1799 | |
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03-03-2018, 05:06 PM | #1800 |
Scooby Newbie
Member#: 448404
Join Date: Jun 2016
Location: CT
Vehicle:2016 WRX CWP |
Hi guys, how does my datalog look? This is the best I could get
https://datazap.me/u/makaveli/cobb-s...14-16-19-20-22 |
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