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ereed91 ereed91 is offline
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Default JB4 BEST SETTINGS! /LOG CHECK HELP - 01-28-2022, 11:10 PM

Hello I've installed my jb4 and my mods are just intakes with denso plugs gapped to .022, I'm just looking for help with settings and making sure my logs look good. Attached below are my logs on 91. I had to compress to a zip file because the log exceeded the limit of the website.
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AWDGT2 AWDGT2 is offline
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Default 01-30-2022, 03:01 PM

Stick with the guidance from BMS and Stay Map1 with 91 oct. This log is horrible. Timing deviations are too high. The only way of survival is if you can find some E-85 and try an E30 mix.
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ereed91 ereed91 is offline
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Default 01-30-2022, 08:17 PM

Thanks which forum do i submit logs to JB4? I also have a new log from today on MAP1 if you want to tell me how to read it and exactly what's wrong with it.
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Default 01-31-2022, 05:22 AM

Are you asking how to submit to BMS? You don't. Sometimes Terry will ask you to email him a log for special reasons, but this forum is the best place. At times they will chime in with feedback but they are extremely busy. Your log is showing very high timing deviations. It's a tell tale sign of map2 with 91 oct. Look at the numbers Ign2 through Ign6. The lower the numbers are the better. Keeping them below 3 is optimal but yours are much higher. That means engine knock and the car is retarding timing. In your case quite a bit. It tied to octane directly and 91 doesn't play nice with Map2 unless you add Ethanol, octane boost or Race gas.
The software I use is off this website and can be found off the main JB4 thread. There is also a thread for How to read a log.
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Chrismack22 Chrismack22 is offline
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Default 01-31-2022, 05:47 AM

Thank you AWDGT2, your explanation of what to look for on ign 2-6 has answered a question that was bothering me when I was looking at my logs(wasn’t 100% on what numbers to look for). I thought I was correct after doing research and along with your reply to my log post I was feeling better. This has put my mind at ease.
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Default 01-31-2022, 07:04 AM

I was on a tiny phone my last reply and it was too hard to try and find links and go back.
Sooo... from a laptop, here are the two links I was referring to

Software
N54Tech.com - International Turbo Racing Discussion - View Single Post - JB4 laptop connection directions
Logging Parameters
JB4 Logging Parameters - N54Tech.com - International Turbo Racing Discussion
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ereed91 ereed91 is offline
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Default 02-03-2022, 01:29 PM

thank you, that's a help I just don't know how to read these logs, as well as living in vegas there is no 93 around me at all.
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ereed91 ereed91 is offline
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Default 02-04-2022, 12:57 AM

am i able to do e-85 without the flex fuel kit or do i absolutely need the flexfuel kit to run e-85 ? sorry im new to mods and tunes just trying to learn as much as possible.
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Default 02-04-2022, 08:19 AM

You can run an E85 mix for sure without the flex fuel kit. All that kit does is tell you exactly how much E you have running through your system. I have the kit and I recommend it if you are serious about running Map2 or higher. Without the Flex kit, you have to best guess what percentage of E you have. For example there are calculators like this one.. Ethanol % Calculator - Brew City Boost
It works great if you know what percentage the gas station has. There are winter blends that are less than 85%, in the 70's at times. Another way is a simple tester like this one
https://www.amazon.com/REV-X-Super-T...77604364&psc=1
$12 on amazon and it works well.
edit..
All this is important... I failed to mention that you can't mix more than E30 or the car will have issues

Last edited by AWDGT2; 02-04-2022 at 09:42 AM.. Reason: Addition
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