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Old 05-05-2007, 05:50 PM   #1
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Default Anyone know of a decent guide to tuning a Megasquirt?

How to use the autotune features, what to set AFR values to, etc. I googled it but didn't come up with anything. Anyone have something decent for me to spend a couple hours reading?
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Old 05-05-2007, 05:56 PM   #2
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megamanual msefi.com
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Old 05-05-2007, 06:56 PM   #3
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http://www.diyautotune.com/tech_arti...squirt_ems.htm



and how the **** do I get more rows (kpa) and more columns (rpm) in the VE table? I must be overlooking something.
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Old 05-05-2007, 09:24 PM   #4
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I've seen this recommended before but I haven't read it. $20 seems a reasonable amount and the reviews are positive.

http://www.amazon.com/MotorBooks-Do-...8410816&sr=8-4
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Old 05-05-2007, 09:39 PM   #5
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Old 05-06-2007, 02:04 AM   #6
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Quote:
Originally Posted by arga View Post
I've seen this recommended before but I haven't read it. $20 seems a reasonable amount and the reviews are positive.

http://www.amazon.com/MotorBooks-Do-...8410816&sr=8-4
Please do not buy this book, I did and completely regret it. It has absolutely no information on actual tuning principles and whatnot. Instead it tells you what you can do with modern EFI systems apparantly assuming that one will leave the actual tuning to a professional. I was pissed, didnt even get into general guidelines for AFR's in regard to boost and torque peaks, lame.
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Old 05-06-2007, 05:58 AM   #7
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Please do not buy this book, I did and completely regret it. It has absolutely no information on actual tuning principles and whatnot.
Mod parent up. I have spent $$$ on car books, this a must avoid - unless you don't know what EFI is all about. ABSOLUTELY NO TUNING INSIDE. It will tell you what an ECU is, what a TPS is, how Bob Who-Is-He puts twin turbos on a guy's Ferrari F50 (like-we-f***ng-care). Maybe good as an intro if you want to MS your car but cant tell a CTS sensor from a CAS sensor. Otherwise, just move along.

Jim
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Old 05-06-2007, 01:12 PM   #8
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heh, i'm gonna have to agree with the two posts above. the megamanual was much more helpful. the spark tuning section on that book basically said it's really hard, it takes forever, and you need a dyno.
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Old 05-06-2007, 04:20 PM   #9
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I apologize. I didn't mean to spread bad information. I should know better than to recommend something I haven't read. On the plus side, now I know not to buy it.
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Old 05-06-2007, 07:56 PM   #10
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And thats why this place is awesome, we flame or ban you when you do something stupid, but at least we keep you from actually doing something stupid...
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Old 05-06-2007, 09:45 PM   #11
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+1 on the megamanual. You really have to read it section by section to understand what each of the settings is. It's easy to get the car running with the settings on the board already but knowing why those settings are what they are is a different story. I would go thought the MM, then if I didn't understand something do a couple searches at msefi and msextra then here and then ask some questions, someone is bound to be able to answer them.
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Old 05-07-2007, 11:42 AM   #12
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Quote:
Originally Posted by hustler View Post
http://www.diyautotune.com/tech_arti...squirt_ems.htm



and how the **** do I get more rows (kpa) and more columns (rpm) in the VE table? I must be overlooking something.
You can move them by entering new values in the kPa and RPM bins at the bottom of the VE table. The total number of bins is fixed but you can move them as needed.
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