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Old 11-01-2017, 07:24 PM   #111 (permalink)
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the thing is, the AFM-mod does not change the closed loop in any form.

ive been driving some years with my AFR gauge and i can tell. in CL everything is as usual, in OL it is a lot better, because to much fuel is even worse. but i was aiming at the optimal spot and 4 klicks are still a little on the rich side.

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Old 11-02-2017, 03:55 PM   #112 (permalink)
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Quote:
Originally Posted by kurzer View Post
the thing is, the AFM-mod does not change the closed loop in any form.

ive been driving some years with my AFR gauge and i can tell. in CL everything is as usual, in OL it is a lot better, because to much fuel is even worse. but i was aiming at the optimal spot and 4 klicks are still a little on the rich side.
That sounds good. Using a UEGO (your AFR) is a great way to confirm wear you are. If you tune open-loop fuel using air-box modification, you may want to tap a k-type thermocouple into one of the exhaust runners near the exhaust port just to keep an eye on things and make sure that the lessened enrichment doesn't get you into exhaust valve or other thermal issues.
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Old 11-26-2017, 09:50 AM   #113 (permalink)
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Heresy! I wouldn't have bought it at any price if it wasn't a convertible. There will be no more talk of fixed hard tops in this thread!
Too bad the Miata didn't come with a hybrid type top. I think this TR7 was called a "Sprinter"?



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Old 11-26-2017, 12:18 PM   #114 (permalink)
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I love those big fabric roofs - especially on old French 4-door cars!



Better than a fixed roof... but for me, even that wouldn't do compared to the open-top experience of a convertible.

I've wondered if the new Miata "targa" style would even be as enjoyable...

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Old 11-26-2017, 02:09 PM   #115 (permalink)
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That's sweet. How much weight does it add?

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Old 11-26-2017, 02:36 PM   #116 (permalink)
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It's surprisingly only ~120 LBS heavier than the soft top Miata, according to:

https://jalopnik.com/theres-one-big-...d-a-1793242504
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Old 12-26-2017, 07:20 PM   #117 (permalink)
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I read through both of your threads about this car. I did see your post in another thread about:

Racing products design company Hancha did a CFD analysis on 5 different air dam/splitter combinations on a 1st gen Miata.

Did you build or buy your front air dam? Who made it if you bought it?

I am wondering what your Miata MPG is driving it around 65MPH?
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Old 12-26-2017, 09:54 PM   #118 (permalink)
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For those following along at home:

https://hanchagroup.wordpress.com/category/cfd/page/2/

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Old 12-27-2017, 11:09 AM   #119 (permalink)
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Quote:
Originally Posted by Titanium View Post
Did you build or buy your front air dam? Who made it if you bought it?
It's just Coroplast (corrugated plastic)... home made construction. You can get it at places like Home Depot or sign shops.

Same construction technique as the one I just stuck on my 2000 Metro: Ecomodding my winter beater: a unicorn no-rust (*) 2000 Chevrolet Metro 1.0 5-spd

Quote:
I am wondering what your Miata MPG is driving it around 65MPH?
No idea! I didn't get around to doing a speed vs. MPG graph for the car this summer. If I had to guess, I'd say around 35 mpg @ 65 mph with the mods that are currently on the car.
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Old 12-27-2017, 01:43 PM   #120 (permalink)
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I get 28mpg at 75 with the cruise control set and the A/C on if that helps anyone. Though mine is a 1.8l with a 4.1 diff instead of the 4.3 and a 1.6. I also have grippy tires that are much, much larger than stock tires, 205-50R15 Instead of 185-60R14. I cruise 3,647 at 75.

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