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Old 08-19-2015, 10:36 PM   #15
steve99
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Originally Posted by themajesticone View Post
Why would the corporations let the stock tune be set with that much knock? Who can't tune at toyota or subaru?
It probably done on best fuel available then they just rely on the knock control to compensate for lower quality fuels or fuels in different countries.

The timing/fueling tables in the stock rom are same for USA roms ie they have access to rearly good 93 AKI fuel and you IAM will be 1 with little or no knock, same tuning used for South Africa which only has 95 ron fuel available which is way worse than USA 91. IAM =0.2 and still -3 degrees knock corrections.

Our rubbish 98 ron in Australia is not even equlivant to your 91 and same tables used.

Probably just too expensive to tune for all the different fuels.

I see cars on stock tune here running 98 ron fuel with IAM at 0.5 and lower. and still 2 to 3 degrees corrections at times.
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Old 08-20-2015, 12:55 AM   #16
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Originally Posted by themajesticone View Post
Why would the corporations let the stock tune be set with that much knock? Who can't tune at toyota or subaru?
top quality 93 octane fuel tuned to the ragged edge=most power=better marketing=more sales
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Old 08-20-2015, 11:59 AM   #17
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A tutorial would be great!
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Old 08-20-2015, 07:17 PM   #18
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@headlikeahole
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@JS + BRZ

Added video to OP, hope this helps you guys get going with editing maps.
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Old 08-20-2015, 10:19 PM   #19
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Does it matter that romraider gives me all kinds of checksum alerts when I open or save a tune file? I'm sure I'm using the right xml and bin files.


edit: Tried to add the updated tune to OFmanager and im not getting "checksum has been corrected" not sure where I went wrong.

edit 2: Think I found the answer on one of the other OFT threads.

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Many OFT roms have not had the checksums corrected so romraider will pop up a message saying checksum is incorrect. you can use romraider to correct checksum, but the OFT and openflash manager software
will correct the checksum for you when you load the rom into the OFT.
So as long as either romraider OR manager fixed the checksum then im good?

Last edited by headlikeahole; 08-20-2015 at 10:37 PM.
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Old 08-20-2015, 11:30 PM   #20
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@headlikeahole like I said in the video, you'll get checksum alerts and romraider will correct it when you save your file, or OFM will correct it for you.
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Old 08-21-2015, 01:15 PM   #21
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@headlikeahole like I said in the video, you'll get checksum alerts and romraider will correct it when you save your file, or OFM will correct it for you.
Watched the tutorial after posting thanks! Video tutorial was great for confirming the work I did yesterday. Uploaded my new Tune this morning no issue. Didn't pull quite as much timing as you, going to do some logging and pull more later if needed.

Thanks again for the great write up.
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Old 09-16-2015, 07:18 PM   #22
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I took a look at these timing changes from your log and compared to the changes made on my personal Stg1 file and they are almost identical, @JB86'd do you happen to use Chevron exclusively? I only ask because these changes are pretty much what I had to do to keep my IAM from dropping in traffic or normal driving, anyways great work! I would highly suggest trying these values if you are having issues with CA 91 I imagine if you use Chevron only then these will do the trick for you.
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Old 09-18-2015, 05:52 PM   #23
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@JB86'd

Would it be possible for you to do some custom tuning for my friend with OFT? He just installed BPB on his car but his car is 2015 BRZ so there's no map available for it yet..
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Old 09-18-2015, 11:19 PM   #24
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I took a look at these timing changes from your log and compared to the changes made on my personal Stg1 file and they are almost identical, @JB86'd do you happen to use Chevron exclusively? I only ask because these changes are pretty much what I had to do to keep my IAM from dropping in traffic or normal driving, anyways great work! I would highly suggest trying these values if you are having issues with CA 91 I imagine if you use Chevron only then these will do the trick for you.
I did use Chevron then I switched to Shell. I'm sure they're pretty similar as far as quality.
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Old 09-18-2015, 11:22 PM   #25
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@JB86'd

Would it be possible for you to do some custom tuning for my friend with OFT? He just installed BPB on his car but his car is 2015 BRZ so there's no map available for it yet..
I don't really do any "tuning", I'm really not qualified, I just make small changes and dabble in modifying small stuff.

If I'm not mistaken, if your friend can open one of the BPB tunes from another year BRZ in Romraider, then open his tune..he can see what differences are there and copy them over. Just needs to be sure to use the correct Openflash definitions when opening those tunes.
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Old 09-20-2015, 05:06 PM   #26
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Are you not getting any knock between 2400~4000RPM .6~.8 g/rev areas with only -.35 degrees less than the OTS table?
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Old 09-20-2015, 07:43 PM   #27
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@solidONE Check out the temp compensation table
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Old 09-20-2015, 08:24 PM   #28
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@solidONE Check out the temp compensation table
Ahh okay.
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