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EvoScan AFRMAP not mattching "High Octane Fuel Map" in V7 Rom

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Old Aug 24, 2010 | 09:04 AM
  #1  
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From: NJ
EvoScan AFRMAP not mattching "High Octane Fuel Map" in V7 Rom

For example:

AFRMAP:
12.97655
RPM:
3875
Load1B:
184


But my V7 Rom's High Octain Fuel Map says it should be about 11.3 for that load and RPM.

For what it's worth, Wideband logged: 13.1


I'm confident I'm at fault here, but anyone know wtf I messed up?

Any help would be appreciated.
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Old Aug 24, 2010 | 09:19 AM
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Log 2byte load (temp + baro compensated)
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Old Aug 24, 2010 | 09:26 AM
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Originally Posted by Fast_Freddie
Log 2byte load (temp + baro compensated)
Thanks for the quick response.

Next question, after loading V7, my 2byte is now way off. It reads super high, like over a thousand at times. Any ideas? I'm pretty sure it was perfect before the V7 conversion. It looks like i have a multiplier somewhere it shouldn't be, possible in EvoScan? Do you know the Evoscan formula for that variable?

thanks!
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Old Aug 24, 2010 | 09:28 AM
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Make sure your MUT table address is correct, V7 may have a different one.
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Old Aug 24, 2010 | 09:37 AM
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Originally Posted by Raptord
Make sure your MUT table address is correct, V7 may have a different one.
I suspected this may be the problem, but wouldn't V7 already be setup for it?

I understand editing a stock based Rom to log 2byte, but I have to edit a V7 Mut table address as well?
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Old Aug 24, 2010 | 09:40 AM
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From: Gatineau, Quebec, Canada
V7 may have that address setup the same as a stock map, or it may be setup for something v7-specific. Never hurts to double check.
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Old Aug 24, 2010 | 10:30 AM
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V7 doesn't have 2-byte logging setup by default because Tephra say's to use 1-byte logging now.

I'm fuzzy on the rest of this, but the 1-byte load is a raw load, which I believe should read higher then the temp/baro compensated load.
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Old Aug 24, 2010 | 10:32 AM
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From: NJ
Originally Posted by rgar
V7 doesn't have 2-byte logging setup by default because Tephra say's to use 1-byte logging now.

I'm fuzzy on the rest of this, but the 1-byte load is a raw load, which I believe should read higher then the temp/baro compensated load.
Yeah, i thought Tephra did say use 1byte, that's why i never dug into my 2byte issue.

Anyway, i found this:

2byte to 1byte load factor
- simple divide routine to convert 2byte load into a 1byte field and then Evoscan will convert back to 2byte.
- MATCH you LoadFactor in ECUFLASH to the SAME as your Eval in evoscan
- MaxLoad is loadfactor * 255, ie a loadfactor of 1.2 will allow a Max Loggable Load of 306, 1.3 = 331... etc (choose an appropriate loadfactor based on your existing max load)


So i went into my Rom, changed the factor to 1.4 and then went into Evo Scan and changed the Eval to 1.4*x

I'll attempt a log on the way home today, but does this seem right to anyone else here?

Eitherway, this kinda puts me back to my original question :-/
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Old Aug 24, 2010 | 10:50 AM
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No, that won't work. the 2-to-1 byte conversion factor is used in EcuFlash, not Evoscan. It isn't related to the issue at hand.
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Old Aug 24, 2010 | 10:54 AM
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From: NJ
Originally Posted by Raptord
No, that won't work. the 2-to-1 byte conversion factor is used in EcuFlash, not Evoscan. It isn't related to the issue at hand.
which issue, my 1byte load not matching my AFRMap log?
or my 2btye load reading way off?

Because changing my "eval" formula in evoscan I think is required for it work properly...?

Last edited by Carloverx; Aug 24, 2010 at 11:04 AM.
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Old Aug 24, 2010 | 11:46 AM
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As far as changing the value to 1.4 I believe you did it correctly if you changed it in both evoscan and ecuflash. That should increase your maximum load to around 360, but I don't think it will help with your problem.

Edit:
I don't think it will help either of your problems. Not sure why there is the mismatch, but I vaguely remember reading something about mismatches in V7 and how they are supposed to be there in the V7 thread. It's a huge thread, and I'm only on page 22 so if there is information about the mismatches.
Found it, see if this helps https://www.evolutionm.net/forums/ec...ml#post7609716 look around post #273

Also my two-byte load is way off in V7 I'm assuming that's because my mutt table isn't setup for it because V7 isn't supposed to be logging it, So you could go and set it up yourself as long as the table entries aren't being used for something else, but I don't think that logging 2-byte is going to help you much.

Last edited by rgar; Aug 24, 2010 at 11:58 AM.
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Old Aug 24, 2010 | 11:50 AM
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Changing the factor will only increase the maximum value that 1B logging from V7 will log, so I don't think it's related to either one of your issues.
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Old Aug 24, 2010 | 12:37 PM
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From: NJ
Originally Posted by Raptord
Changing the factor will only increase the maximum value that 1B logging from V7 will log, so I don't think it's related to either one of your issues.
But i think changing the EvoScan value (which used to be .3something * X) to 1.4*X will now let my 2byte read correctly.

But yeah, still, Tephra i think recommends using 1byte anyway lol
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Old Aug 24, 2010 | 07:39 PM
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Here IS something relevant to one of your issues, from the V7 thread

Preconfigured MUT Requests
MUT00+MUT01 = 2byte airflow (ie MrFreds mod in g/s or lb/min)
MUT02+MUT03 = 2byte airflow (ie MAFHz)
MUT40 = 1byte gear
MUT41 = 1byte load
MUT42+MUT43 = 2byte SPEED/RPM ratio (to get your gear ratios correct - if you need to)

2byte load AND 2byte RPM are no longer included and IMHO not needed!
So you'll need to reconfigure the MUT table if you want to log 2-byte load.
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Old Aug 24, 2010 | 09:07 PM
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From: NJ
Originally Posted by Raptord
Here IS something relevant to one of your issues, from the V7 thread



So you'll need to reconfigure the MUT table if you want to log 2-byte load.
Thanks for the info. The adjustments I made threw it even further out of whack.

I'ma leave it alone like i before, it seems 1byte is the weapon of choice anyway.

So why don't my AFRMAP logs match my fuel map
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