10-21-2021, 02:19 PM | #2073 |
Junior Member
Join Date: Dec 2020
Drives: Toyota GT86 2016
Location: Catania - Italy
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Hi all there,
i'm trying to refine a base tune for my Greddy-turboed GT86 (year 2016), actually i'm still dealing with the MAF sensor scaling, maybe something else will require some adjustments too. Here's the log of a 3rd gear pull from 2500 to 6000 rpm: https://datazap.me/u/pippoemme/log-1...ta=1-5-8-12-14 Maybe the MAF scaling still overestimates the airflow beyond 3.85 volts (the AFR saturates at a rich end of 11.02 despite the MAF voltage still increases), but I especially fear the Advancement Multiplier stuck around 0.7 all over the log: why significant knocking should be present, if the load is very low / the AFR is very rich ? And do the other knock-related parameters (KC, KCL and FLKC) support the diagnosis of knocking ? Thanks in advance for any suggestion, cheers, Giuseppe |
10-21-2021, 08:38 PM | #2074 |
Senior Member
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 2,183
Thanks: 499
Thanked 1,059 Times in 769 Posts
Mentioned: 64 Post(s)
Tagged: 0 Thread(s)
|
it knocks because the maf scaling is atrocious, then it depends also on PI%, injection angle, and what kind of cam timing you ve written
More than refining, here you are at a very beginning, if you need help i m in italy like you you can write me |
11-08-2021, 12:01 PM | #2075 |
Senior Member
Join Date: Jun 2020
Drives: 2018 Subaru BRZ
Location: Stonington, Connecticut
Posts: 3,273
Thanks: 1,510
Thanked 4,132 Times in 1,981 Posts
Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
|
Still working with Steve on the new tune. But I wanted to share what I think is a different feeling on the car after getting the WRG-21 Fuel Pump Impeller Failure Safety Recall for 2018-2019 BRZs.
Normal Driving Before Fuel Pump: https://datazap.me/u/spcmafia/log-16...og=0&data=1-13 Normal Driving After Fuel Pump: https://datazap.me/u/spcmafia/log-16...og=1&data=1-13 Doing a WOT today for After Fuel Pump. Pending post. Info for context, the car is on a second revision of the OFT Tune. Mods are: 1. JDL UEL Catted Headers 2. Invidia OP 3. HKS Double Res F.P 4. HKS Hi Power Spec L 5. Perrin Inlet Tube 6. K&N Drop-In Air Filter 7. 93 OCT Fuel
__________________
“God gave me an okay mind, but a really good ass, which can feel everything in a car.” Nikki Lauda
|
11-27-2021, 08:54 AM | #2076 |
Member
Join Date: Nov 2021
Drives: 2019 Subaru BRZ
Location: NA
Posts: 44
Thanks: 24
Thanked 32 Times in 17 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
|
WOT log after 2700km on OTS - default too lean?
Hi, I uploaded wayne v167 default, about 1700mi/2700km of 91 octane ago, onto my stock 2019 BRZ, and the logs are interesting.
I read behind quite a few pages in this post, but before I upload a new tune, I thought I would check - Given the high positive LTFT both under and over 5000rpm and the actual AFR running too lean versus commanded, is a reasonable next-step for me to bump up to a +Rich scaling and run it for another couple thousand km? (is +2% Rich plus enough for the next flash?) https://datazap.me/u/penetfi/stock-1...t-after-2700km |
11-27-2021, 09:34 AM | #2077 |
Senior Member
Join Date: Mar 2018
Drives: 17 Asphalt 86
Location: Ottawa
Posts: 2,148
Thanks: 1,694
Thanked 2,168 Times in 1,114 Posts
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
|
AFR is all over the place.
Somebody else will Chime in but you start maybe a touch lean at 12.6 and end at 10.9 which is way to fat. |
11-27-2021, 12:44 PM | #2078 |
Senior Member
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 2,183
Thanks: 499
Thanked 1,059 Times in 769 Posts
Mentioned: 64 Post(s)
Tagged: 0 Thread(s)
|
yes your tune could improve a lot if taken care of maf and timings
You have more dip than a stock tune almost |
12-06-2021, 05:52 PM | #2079 |
Member
Join Date: Oct 2019
Drives: 2015 FR-S, 1997 328iS
Location: Sacramento
Posts: 16
Thanks: 1
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Hi, recently car has been running weird. There is hesitation/breakups during highway driving in partial throttle/wot. Looking at my datalogs, it seems that fuel trims are really negative. No signs of oil blowby in throttle body or near MAF sensor. I also reclamped and retightened everything. Can't tell if it is a tune related issue or mechanical.
Partial Throttle/Cruising/WOT https://datazap.me/u/xinnie/v2955-0?log=0&data=31 Idle/FreeRevving https://datazap.me/u/xinnie/v2955-co...?log=0&data=31 2015 with 30,xxx miles Parts: JRSC C30 Delicious Tuning Radium PCV Catch Can Stock Fuel System 91 Oct |
12-06-2021, 06:13 PM | #2080 | |
Senior Member
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 2,183
Thanks: 499
Thanked 1,059 Times in 769 Posts
Mentioned: 64 Post(s)
Tagged: 0 Thread(s)
|
Quote:
Ask opinion to your tuner also |
|
The Following User Says Thank You to tomm.brz For This Useful Post: | Xinnie (12-06-2021) |
12-06-2021, 10:15 PM | #2081 |
Member
Join Date: Oct 2019
Drives: 2015 FR-S, 1997 328iS
Location: Sacramento
Posts: 16
Thanks: 1
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Thanks for taking a look. I will email my tuner for his opinion. It is nice to have another person besides tuner to look at my data logs.
|
02-05-2022, 01:22 PM | #2082 |
Junior Member
Join Date: Jan 2022
Drives: 2013 BRZ
Location: ON
Posts: 5
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Hi guys new tuner here, I'm trying to optimize OFT v4.03 tunes for 91 octane Canadian gas. Below are a few 3rd gear pulls. I see that my FLKC is positive but my IAM is 0.7 the whole time. I believe my cruising knock is causing the IAM to stay 0.7. To optimize this tune would reducing timing in the cruising range improve performance in this tune by hopefully raising the IAM towards 1?
3rd gear pulls: https://datazap.me/u/legendz6/4-3rd-...?log=0&data=19 Cruising knock: https://datazap.me/u/legendz6/more-k...0&data=1-20-27 https://datazap.me/u/legendz6/knock?log=0&data=9-14 |
02-07-2022, 04:58 AM | #2083 | |
86
Join Date: May 2016
Drives: 2015 Toyota GT86 MT UEL E85 RSR CWP
Location: Perth, Western Australia
Posts: 3,293
Thanks: 3,553
Thanked 4,850 Times in 2,166 Posts
Mentioned: 28 Post(s)
Tagged: 0 Thread(s)
|
Quote:
|
|
02-24-2022, 11:47 AM | #2084 |
Member
Join Date: Feb 2022
Drives: 2013 BRZ
Location: Texas
Posts: 14
Thanks: 0
Thanked 3 Times in 2 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Hi everyone. Just trying to wrap my head around my fuel trims, and how my car was tuned, so that I can keep tabs on it.
Does anyone see anything weird going on here? As a note, my MAF is reporting half of what it should be, so I was wondering if the tuner decided to omit tuning with the MAF, and if that's why I'm getting weird fuel trim numbers, but my car is running great. https://datazap.me/u/drivingwithme/l...4?log=0&data=9 |
02-24-2022, 02:59 PM | #2085 |
Senior Member
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 2,183
Thanks: 499
Thanked 1,059 Times in 769 Posts
Mentioned: 64 Post(s)
Tagged: 0 Thread(s)
|
try again to take a log but with these logging values:
ignition advance rpm ENGINE load MAF volt. COMMAND afr afr stft LTFT FUEL SYSTEM status ADV MULTIPLIER intake air temp flkc knock correction |
02-25-2022, 12:55 AM | #2086 | |
Member
Join Date: Feb 2022
Drives: 2013 BRZ
Location: Texas
Posts: 14
Thanks: 0
Thanked 3 Times in 2 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Quote:
https://datazap.me/u/drivingwithme/l...3-4-7-11-12-13 I have another group of them just for comparison: https://datazap.me/u/drivingwithme/l...4-5-6-11-12-14 It's all on 93 octane. Some things that might be relevant: - When FTKC moves a bit, I am probably hitting the shift light, as I revved it all the way until I saw that light to get good data for the pulls. I'm not sure if I went completely WOT, as I was just trying to hit the light in some reasonable way. - This isn't the first time I've seen some amount of kc, or in my other logs, timing being pulled randomly, and pretty drastically, when city driving. Though that is kind of scary to look at, I'm glad that these engines do that. - It seems to be overboosting by 1-2 psi occasionally. That's only when I take it to the shift light to get a good log. I pretty much never do that for any reason otherwise, as I'm mostly taking this thing through twisties and not dragging it. I'm pretty sure the wastegate is set at 10psi, so I'm not sure about how that's happening. - Maf voltage seems to change with actual air coming in, but I'm still curious as to why my fuel trims are so wonky. I'm guessing that it has to do with MAF scaling? Last edited by brzperson; 02-25-2022 at 01:49 AM. |
|
|
|
Thread Tools | Search this Thread |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
RGM Supercharged 86 performance data | TheGooseman | AFRICA | 14 | 12-13-2014 01:15 AM |
Interpreting Ecutek Data Logs? | cuddefred | Software Tuning | 3 | 09-02-2013 12:55 PM |
VIR - Impressions/Pics/Logs/Video (Track Daze) | swift996 | Tracking / Autocross / HPDE / Drifting | 39 | 08-30-2013 09:21 AM |
Noise tube delete air/fuel logs? | jm1681 | Engine, Exhaust, Transmission | 13 | 10-17-2012 04:57 PM |
ECU Data Logger | Motordyne | Engine, Exhaust, Transmission | 5 | 07-18-2012 09:27 AM |