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12-03-2018, 11:35 AM | #26 |
Scooby Newbie
Member#: 332408
Join Date: Sep 2012
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I think it's hard to say the winter blend is causing the knock. There are temperature compensation tables that the tuner can adjust.
I do know for me at least, my knock readings are practically 0 in the winter. In the summer, I might get one off -1.41. Seems to me hotter air means a higher chance of knock, which makes sense.
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12-03-2018, 01:28 PM | #27 |
Scooby Specialist
Member#: 460907
Join Date: Jan 2017
Chapter/Region:
RMIC
Location: Colorado
Vehicle:2020 Golf GTI |
Winter gas is notorious for being a worse blend than Summer. Inconsistent octane, etc
They dont just add more ethanol, it's already E10, making it E15 screws with wayyy to many cars that cant compensate for the larger volume of fuel needed Guys, warm temps cause knock not low temps. You dont start knocking because your car has too much oxygen. Everybody's tune adjust for temperature and environmental changes, ftcl or not. |
12-03-2018, 01:37 PM | #28 |
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Member#: 332408
Join Date: Sep 2012
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Are you sure they're able to add more than 10% ethanol to pump gas? It clearly states on the pumps 10%. Oil companies could get in trouble for falsifying ethanol content.
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12-03-2018, 01:45 PM | #29 |
Scooby Specialist
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Chapter/Region:
RMIC
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Vehicle:2020 Golf GTI |
Reread what I wrote. I said they dont add ethanol.
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12-03-2018, 02:12 PM | #30 |
Scooby Newbie
Member#: 489697
Join Date: Aug 2018
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Stock 2018 WRX under 15k miles. It was happening on Cobb 91 and 93 and MAPerformance 91 and 93, stg 1 of course. I was kind of shocked to see knock on the 91 map.
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12-03-2018, 03:07 PM | #31 |
Scooby Specialist
Member#: 468117
Join Date: May 2017
Chapter/Region:
SCIC
Location: Southern Cali
Vehicle:2017 WRX DMG |
https://www.goldeagle.com/tips-tools...-summer-fuels/
they add butane and butane has a 94oct rating https://en.wikipedia.org/wiki/Octane_rating |
12-03-2018, 03:36 PM | #32 | |
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Member#: 489697
Join Date: Aug 2018
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Quote:
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12-03-2018, 03:37 PM | #33 | |
Scooby Guru
Member#: 428511
Join Date: Aug 2015
Location: philadelphia
Vehicle:2016 STI |
Quote:
So you are getting anywhere from zero to 10% and nobody on planet earth knows unless you bring one of those floating beaker things to test it yourself at the pump |
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12-12-2018, 11:55 PM | #34 |
Scooby Newbie
Member#: 449597
Join Date: Jun 2016
Chapter/Region:
NWIC
Vehicle:2016 WRX Pure Red |
Just a data point:
I was on MAP Stage 1 91 v4 running 92 oct gas and started developing FBK while cruising on the interstate in 6th gear if I encountered even a mild hill. I attributed it to carbon build up in the intake tract and valves (was probably at around 24k miles). I upgraded to their Stage 1 91 FRN tune and all the highway LSPI FBK went away. I now only get FBK and FKL at low speeds if I'm clumsy with the clutch. My DAM has never dropped below 1.0 on a MAP tune. I watch the short-term fuel trim and I can tell MAP has definitely added a lot more nuance to their fueling strategy, e.g. more fuel for better cooling at higher throttle. I'm pretty happy with the FRN version, which I always assumed stood for "final revision." I plan on doing TGV/EGR delete in the Spring and Cobb Surgeline is just down the road, so I'll probably be going the dyno tune route then, though there seems to be lots of options in the Portland, OR area. |
12-19-2018, 01:33 PM | #35 |
Scooby Newbie
Member#: 463296
Join Date: Feb 2017
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Switched to this new map yesterday, I really like it!
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01-04-2019, 01:36 PM | #36 |
Scooby Newbie
Member#: 494455
Join Date: Nov 2018
Location: Long Island, NY
Vehicle:2015 WRX Limited 6MT WR Blue |
Just tried the 91 MA Performance FRN tune and DAM dropped to 0.688 within 6 miles of my commute to work. 91 COBB tune is completely rock solid. Nothing I can do on the COBB 91 tune can drop the DAM it seems. COBB 93 though DOES drop DAM right away pretty much. So while running 93 fuel, I can only run the COBB 91 tune.
COBB 93 and FRN 91 AND FRN 93 all drop DAM very quickly and don't ever go back up. It's so fragile on those tunes... All on shell v power 93, Sunoco 93 and Valero 93 fuel Thoughts? I'm so confused by this behavior. I figured if there was something mechanically wrong, it would see it too on the COBB 91 right? |
01-04-2019, 03:23 PM | #37 | |
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Member#: 332408
Join Date: Sep 2012
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Quote:
I would either pump 2-3 gallons of E85 if it's available in your area and try 93 maps again, or you can just run 91 Cobb. You can also get an e-tune. You have a few options available. |
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01-04-2019, 03:28 PM | #38 | |
Scooby Specialist
Member#: 431550
Join Date: Oct 2015
Location: South Florida
Vehicle:2016 WRX ALL THE STAGES |
Quote:
Protuned for stage 1 now and the hill issue does not happen anymore. |
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01-05-2019, 02:30 PM | #39 |
Scooby Newbie
Member#: 173048
Join Date: Feb 2008
Vehicle:2017 WRX |
I loved the 91 Map Stage 1 so much, i went Map Stage 2 weeks later. So far logs look very good. I'll log more as the weather warms up but so far, perfection.
The Map Stage 1 was great. |
01-05-2019, 09:18 PM | #40 | |
Scooby Newbie
Member#: 494455
Join Date: Nov 2018
Location: Long Island, NY
Vehicle:2015 WRX Limited 6MT WR Blue |
Quote:
I put 2 gallons of e85 in and drove it for about 20 miles after letting it sit overnight. The DAM just dropped to 0.58 on the MAP FRN 91. This is scaring me now, what could be wrong with my car? Could my fuel really be that bad? Yet the COBB 91 tune is completely rock solid. Or has the e85 not mixed well enough and is it just sitting at the top of my tank? Do you think I should run this tank dry so I know I definitely used the ethanol or should I just give up and change maps back to Cobb 91 for now? Maybe try a 3rd gallon of e85? |
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02-09-2019, 03:03 PM | #41 |
Scooby Newbie
Member#: 478291
Join Date: Nov 2017
Chapter/Region:
Tri-State
Location: New Jersey
Vehicle:2018 WRX WRB |
Bringing this back from the dead. Anyone running MAP FRN newest version. How you like or dislike.
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02-09-2019, 03:26 PM | #42 |
Scooby Specialist
Member#: 419593
Join Date: Apr 2015
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I have it. I love it. Doesn't give up much, if anything in power in comparison to my e-tunes however it does require top notch fuel. Pretty much 2-3 gallons of E85 to see zero knock. I am going to get their E30 tune soon.
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02-09-2019, 03:40 PM | #43 | |
Scooby Newbie
Member#: 478291
Join Date: Nov 2017
Chapter/Region:
Tri-State
Location: New Jersey
Vehicle:2018 WRX WRB |
Quote:
I have the 91 tune have not loaded it yet. Will run 93 to hope protect against some knock. Been running Cobb 93 for a while but hear MAP is a lot smoother. Pretty much all I am looking for that and reliability. |
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02-09-2019, 03:58 PM | #44 |
Scooby Specialist
Member#: 419593
Join Date: Apr 2015
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No. Run the 93 tune. If you don't have it, email them they will send it to you. You will see knock regardless. NJ gas is pretty good. Use BP or Exxon. Their tune is absolutely amazing. Most people see knock but that is mostly because they don't mess with the sensors IMO.
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02-09-2019, 04:03 PM | #45 | |
Scooby Newbie
Member#: 478291
Join Date: Nov 2017
Chapter/Region:
Tri-State
Location: New Jersey
Vehicle:2018 WRX WRB |
Quote:
Yeah was debating the 93. Was just trying to have some extra protection. |
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02-09-2019, 04:19 PM | #46 |
Scooby Specialist
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02-09-2019, 04:23 PM | #47 |
Scooby Newbie
Member#: 478291
Join Date: Nov 2017
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Location: New Jersey
Vehicle:2018 WRX WRB |
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02-10-2019, 02:38 AM | #48 |
Scooby Newbie
Member#: 497012
Join Date: Jan 2019
Location: Denver
Vehicle:2018 WRX Premium |
I have the Map E30 and 91 FRN tunes. Both run great on my 18' with just under 13k on the odo. No knock, not even the infamous -1.41 and DAM stays at a solid 1. If E85 is available close you'll see a big difference with the E30 tune. As always each car is different but mine has been solid on these tunes.
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02-23-2019, 01:33 PM | #49 |
Scooby Newbie
Member#: 478291
Join Date: Nov 2017
Chapter/Region:
Tri-State
Location: New Jersey
Vehicle:2018 WRX WRB |
Just loaded the new MAP “FRN” version stage 1 and love it so far been driving all day and the smile is back on my face.
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02-23-2019, 03:59 PM | #50 |
Scooby Specialist
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