A/F Ratios and Air Restrictions

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07-02-2012, 04:30 PM

#41

Lord_Apollos

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Quote:

Originally Posted by hustler

I remember about 3-4 years ago when all the California guys I hung out with talked about MS like it was the Commadore 64 of engine management. It seems that now everyone is tuning it.

I know that guy has a good reputation, but I promise you that no matter how good the tuner you will always have a superior tune if you tune the car yourself simply because you can put countless hours into perfection that you can't afford with an hourly rate.

I know what you mean, but I know jack all about it and when I try to read up about it makes my head spin. Plus I have no friends who care about cars and can help me tune it. So for now I'll get a decent tune from a tuner, and if I can make friends near me who know/care about tuning I'll go from there. :/

07-02-2012, 05:34 PM

#42

Leafy

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Quote:

Originally Posted by hustler

I remember about 3-4 years ago when all the California guys I hung out with talked about MS like it was the Commadore 64 of engine management. It seems that now everyone is tuning it.

The MS1 really was like that. Now with the MS3 its more like Dell.

07-02-2012, 08:36 PM

#43

midpack

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Quote:

Originally Posted by hustler

I know that guy has a good reputation, but I promise you that no matter how good the tuner you will always have a superior tune if you tune the car yourself simply because you can put countless hours into perfection that you can't afford with an hourly rate.

Can you tune spark without a dyno?

07-02-2012, 09:28 PM

#44

Leafy

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Originally Posted by midpack

Can you tune spark without a dyno?

Only on power with boost, and that assumes you hit the knock limit before you hit mean best torque. You cant do the fuel economy part of spark tuning, and you wont get all the cells in the table.

07-03-2012, 06:29 PM

#45

soviet

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Quote:

Originally Posted by Lord_Apollos

Is that with gasoline? And isn't that really lean?? I thought 14.7 AFR was ideal (Stoichiometric) Since we are on the subject of AFR again, what do I want to see for when it's in warm up enrichment? I think I'm around 12-13 AFR or so but I don't know if that that is right.

All you need to know about AFR - https://www.miataturbo.net/attachmen...engine-afr-pdf

A very useful document.

17:1 idle just happened. I don't really advice it but you CAN run it and get marginally better fuel economy.