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How To Tune an Evo

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Old Oct 21, 2007, 02:58 PM   #31
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good writeup, although i dont nearly have the ***** to do this lol
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Old Oct 21, 2007, 03:05 PM   #32
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Old Oct 21, 2007, 03:06 PM   #33
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for timing and boost adjustments. Would you adjust timing first? boost first? both? or does it just depend really. thankss, and awesome writeup.
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Old Oct 21, 2007, 03:22 PM   #34
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i just read the hole thing great info i only wish more people took the time to do more write ups like this waiting on the next one somebody buy this man a
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Old Oct 21, 2007, 03:34 PM   #35
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very nice for beginners, only comments I have are. In your timming explanation you should have mentioned that timing map 2 is the base map and map#1 is the advanced map. The evo will use map 2 for timing and during its learning phase (which no body understands) it will at certain periods add the advanced timing to the base map , i.e #1 added to #2 to increase the overal timing, first using only adding about 1/2 the full advanced map and if its algorithm dont see a problem add the full amount or decrease it and jump to map#3 if major problems.
I dont think anyone outside of mitsubishi will ever come up with the algorithm, way to complicated. Maybe after we figure out the Cam timing , we can mathematically get closer.
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Old Oct 21, 2007, 04:14 PM   #36
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Old Oct 21, 2007, 04:52 PM   #37
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Good write up Naji! There is one thing here though:

Quote:
Originally Posted by nj1266 View Post
4. Logging Software: The most widely used logging software is Evoscan (http://www.limitless.co.nz/EvoScan). It uses the tactrix cable to log data from your ECU port. It also allows you to integrate data from your WBO2 with the data from your ECU port. It costs $25. It is a one time fee that entitles you to later updates of the software. It is very user friendly and easy to set-up. If you want free software, then try Mitsulogger from the aktivematrix web site.

As you have seen from recent posts on this forum, that "one time fee" seems as though it will arbitrarily be applied to some updates going forward and not all. So probably best to change the wording there.
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Old Oct 21, 2007, 05:01 PM   #38
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Nicely done. If you want some assistance PM me, assign the subject, I'll write and then forward the text to you. If not thats cool too.
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Old Oct 21, 2007, 07:22 PM   #39
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well done - change the title to HOWTO thou as I thought you were asking :P (which is a strange question from you lol)
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Old Oct 21, 2007, 08:15 PM   #40
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good stuff still grasping the concept but starting to sink in, unfortunately ecuflash dosent work on our cars(4g69 lancer ralliarts), but this is good info nonetheless thx guys
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Old Oct 21, 2007, 08:22 PM   #41
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quick q about this write up. In the section for timing; "A", you mention that:

"The higher the timing number in the load cell that the car hits during WOT, the sooner the spark plug is fired. The lower the timing number in the load cell during WOT, the sooner the spark plug is fired"

I'll take it that this is a typo since higher/lower timing # does not = sooner firing of sparkplug. So which one causes sooner firing, and which one causes slower? Thanks. (I printed it out and am studying )
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Old Oct 21, 2007, 08:25 PM   #42
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The larger the #, the sooner the spark occurs before the piston reaches top dead center. A negative number would actually fire AFTER the piston has passed top dead center.
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Old Oct 21, 2007, 08:33 PM   #43
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Quote:
Originally Posted by LithiumX View Post
good stuff still grasping the concept but starting to sink in, unfortunately ecuflash dosent work on our cars(4g69 lancer ralliarts), but this is good info nonetheless thx guys

Give him time. He's currently working on the 2G eclipse/talon non-turbo cars with me(420A chrysler engine). Dont know how long it might take him, but at least he's putting in the effort. He has a lot going on right now with the newer features and upgrades so I'd just hang in there for a while.
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Old Oct 21, 2007, 09:07 PM   #44
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very nice post! Good reading material.. Now if we can just better understand the MIVEC..
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Old Oct 21, 2007, 09:14 PM   #45
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Quote:
Originally Posted by Wiznaz View Post
...Now if we can just better understand the MIVEC..
30* of total allowed motion, advance early on helps spool, advance/retard up top based on your cam specs. To best optimise it get a dyno simulator with cam software and spend a little time with it and it will be real easy. OR look at the thread that NJ linked and ignore about 1/2 the posts. The ones that have tech in them will lead the way. I have heard that the cam gear is PW modulated though I myself have no proof either way.

JB
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