hustler

iTrader: (6)

Its becoming more and more apparent that I will have to tune this car myself, because it seems that no one wants to do it because the last email I got from a tuner went like,
"Unfortunately, Megasquirt is one of
the systems that i do not tune. My job as the tuner is to make sure
the engine runs properly and from my past experiences with Megasquirt,
i was not able to make that happen as it should. It's frustrating
when the tool you're using to do your job does not do it's job as well
as it should."

So I think I need to buy a book and tune this thing myself. Any thoughts on what to read, or does anyone know of a good web page to teach me? I'd go to EFI 101 if I could afford it.

Loki047

iTrader: (6)

drive to diyautotune. when I'm back in chicago I will grab my IC book. I would look for some engines book. Once you understand the process you can tune it safely.

cjernigan

iTrader: (13)

The megamanuals go into this a bit. Have you gone through the tuning section?
http://www.megamanual.com/v22manual/mtune.htm
There is always this too:
http://www.msextra.com/manuals/MS_Ex...nual_Index.htm

hustler

iTrader: (6)

Yes, I've read it several times. It provides instructions for tuning, not theory behind tuning. I'm sure there are "other unknown unknowns" I need to explore. I don't want to show up at the dyno and not know what to do. I need to know theory behind tuning, so I can tune this car once, safely.

hustler

iTrader: (6)

I've thought about this, but that's a really long drive...but I could stop at a few tracks along the way. I've also thought about hitting up BEGi because Stephany said they wanted to check out MS. However, I have to find a solid state / load bearing / eddy control dyno and that's tough to do. There's 1 local guy with one, but I don't know him, the shop, and how can I be sure he knows what he's doing?

patsmx5

iTrader: (16)

Here's a short read I had saved in my favorites.

http://www.innovatemotorsports.com/resources/rich.php

cjernigan

iTrader: (13)

https://www.miataturbo.net/showthrea...=tuning+theory

hustler

iTrader: (6)

Thanks. The local miata tuner seems to think a 10.5:1afr is reasonable, so I can't rely on him for further advice.

hustler

iTrader: (6)

Awesome. So it sounds to me like I should set my 100+kpa loads to run say 12.25 (split the difference) and then tune spark timing until it makes no more power on advance, or knocks. Right?

I think I'll be able to do most of my start, fuel, and enrichments on the street, then fine tune spark, make a dyno queen pass, then turn the boost down to 250whp-worth. I'm starting to think I can do this.

miatamania

iTrader: (9)

if you can dick around with the tuning stuff on the street and get the hang of it, I'm sure if you found a steady state dyno you'd be able to fine tune it yourself to.

cjernigan

iTrader: (13)

I've been told to go to 14.0 at 100 kpa. Above that 12:1 just because fuel supposedly doesn't cool any better when richer than that. You'll have no problem tuning your enrichments on the street. You should have a fuel map close to what you will need to start tuning spark. Tune spark to where you make the most power in that cell. I've never done it though. I'd call jerry up i'm sure he'd talk you up about it. Or even an email so you have it in writing.

Kelly

iTrader: (6)

This one is pretty good.
http://www.amazon.com/Modify-Managem...4280278&sr=8-1

mazda/nissan

iTrader: (2)

http://www.amazon.com/Induction-Perf...823820-3192430
no personal experience but

magnamx-5

iTrader: (7)

Hustler it is not as hard as those tunners make it out to be. If i can do it then so can you. A competent codriver, can help a ton as well. GL

hustler

iTrader: (6)

lol

magnamx-5

iTrader: (7)

That wasn't Written by Keith Tanner so it has no miata value come on man

Kelly

iTrader: (6)

I don't get what was funny. If you are already beyond that books level I am sorry I suggested it.

hustler

iTrader: (6)

Have you read it? I picked it up at the book store yesterday to check it out and its incredibly generic. Thanks for trying though.

hustler

iTrader: (6)

thanks for the info. I'm queer for every one of you.

jayc72

iTrader: (14)

What exactly do you want? A manual for specifically tuning a Miata? Isn't generic what you are after, being that you want the theory behind tuning?

You aren't looking for being on the bleeding edge of things, sounds like you are more worried about being safe. Safe numbers should be pretty easy to arrive at at the cost of ultimate performance.

Maybe you should just ask your questions here, lots of good experience with <gasp> Miatas and the MegaSquirt. What is it that you want to know?