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How to Safely adjust timing

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Old Jul 12, 2006 | 07:22 PM
  #46  
AlwaysinBoost's Avatar
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From: In da streetz
I actually have just under 70k on my car so you have nothing to be jealious about... just enjoy your car, thats all that matters.

I'm glad you like the exhaust, its a nice system. I would have purchased the same thing again but I wanted to try the EBAY unit out.

As far as tuning your car goes will probably only take a few hours and about 1/2 a tank of gas, lol.
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Old Jul 12, 2006 | 07:42 PM
  #47  
C6C6CH3vo's Avatar
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From: sc
Originally Posted by DynoFlash
Remember the stoc ecu uses a average on 4 boxes around the targeted map cell
So [XXXXRPM] - [14], [13], [12], [11] is the same as [12], [13], [12], [13] and so forth?
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Old Jul 13, 2006 | 06:11 AM
  #48  
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From: CT
Originally Posted by DynoFlash
For more details review my article in Turbo magzine on Evo ecus.
Hey Al. I would be very interested in reading the above article. Which issue was it? Is there an online version of the article???

BTW I went to Dynoflash.com and clicked the "tech articles" link and got an error. Don't know if this is a temporary glitch or permanent. Sorry for the off topic...

The page cannot connect to the MySQL database.

Miraserver Error: There has been an invalid database query. MySQL said:


Host 'phre2.phre.net' is not allowed to connect to this MySQL server Query:
SELECT name,id,short,parentlist FROM sections WHERE status=1 AND parent=0 ORDER BY name


Last edited by chmodlf; Jul 13, 2006 at 06:15 AM.
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Old Jul 13, 2006 | 08:01 AM
  #49  
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From: 41° 59' N, 87° 54' W
Originally Posted by C6C6CH3vo
So [XXXXRPM] - [14], [13], [12], [11] is the same as [12], [13], [12], [13] and so forth?
No, I think that needs to be re-worded a bit. At least from the logs that I've looked at, I've noticed the following:

Example:

sample timing table (240 and 260 Load columns):

5500 RPM ... [4][2]
6000 RPM ... [6][4]

Now, let's say that the ECU has calculated a load of 250%, the timing (barring any other condition that pulls timing) should look as follows:

5400 RPM ... 3
5500 RPM ... 3
5600 RPM ... 3
5700 RPM ... 4
5800 RPM ... 4
5900 RPM ... 5
6000 RPM ... 5
6100 RPM ... 5

If your Load % varies slightly, you may end up with something like this (given the same timing table):

5400 RPM, 260%, ... 2
5500 RPM, 260%, ... 2
5600 RPM, 250%, ... 3
5700 RPM, 250%, ... 4
5800 RPM, 250%, ... 4
5900 RPM, 240%, ... 6
6000 RPM, 240%, ... 6
6100 RPM, 250%, ... 5

If the calculated Load % and RPM value do not squarely fall onto a pre-defined timing cell, then the ECU will average the nearest timing cells to get its timing value. Sometimes this is two cells (row or column), sometimes it is four cells (in a square), but I've not seen the ECU use 4 cells in the same row to get its average.

l8r)
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Old Jul 13, 2006 | 11:26 AM
  #50  
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From: UK
http://en.wikipedia.org/wiki/Bilinear_interpolation
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Old Jul 13, 2006 | 05:32 PM
  #51  
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From: sc
You got to be kidding, I'm of the working class - Im like duuuuh.
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Old Jul 13, 2006 | 06:00 PM
  #52  
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From: NJ
Cute
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