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Old 10-04-2009, 12:26 PM   #61
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Quote:
Originally Posted by hustler View Post
For cruise AFR tuning, everyone in this thread ignores that Mazda gets 30mpg from 14.7:1. Running 17:1 may be ok, but I'll never know because I have too much money in this to find out.
fueleconomy.gov says 22/27 for the 5sp and 21/26 for the 6sp stock miata.

i'm gonna say it again: MBT means maximizing torque. more torque means more fuel. this is for power tuning.

in cruise you want to tune your AFR first and use timing to keep the burn in the cylinder. so what if you're beyond MBT in cruise? you've already changed the game by reducing fuel.

just raise all your timing into the low 40s
and raise your AFR targets below 70kPa to 15.5:1
stay off the gas on the highway.

you wont destroy your car.
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Old 10-04-2009, 12:47 PM   #62
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Originally Posted by y8s View Post
i'm gonna say it again: MBT means maximizing torque. more torque means more fuel. this is for power tuning.
MBT is determined independantly from AFR, unless limited by detonation. So running less MBT, with constant AFR does not reduce mbg...because AFR is constant per load cell. I'm sorry, but running lower KPA, with constant AFR means more fuel efficiency. This is irrefutable. Equal AFR with lower kpa = mpg increase.

Its not for power tuning, its for max efficiency in every cell, in every scenario.

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Old 10-04-2009, 12:52 PM   #63
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Quote:
Originally Posted by hustler View Post
For cruise AFR tuning, everyone in this thread ignores that Mazda gets 30mpg from 14.7:1.
You also might look at how you are driving the car on the street when you calculate your mpg. I'm tuned for 14.7:1 at cruise and I have no problem getting around 30 mpg. It doesn't take much to bring that number down.
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Old 10-04-2009, 12:54 PM   #64
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Please lock this thread. This is ridiculous. Every thread this tool makes goes from him asking how something is done, us giving him advice, to him telling us we are wrong, and then tell us his "version" of the answer to his own question. Its a total joke....
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Old 10-04-2009, 01:14 PM   #65
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The man drives a Miata, and calls everyone else gay, and you are just now figuring that out?!
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Old 10-04-2009, 01:36 PM   #66
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I didn't just figure out anything. I'm just ******* tired of these fail threads. I feel more dumb every time after reading them just from the shear idiocy.
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Old 10-04-2009, 02:32 PM   #67
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Quote:
Originally Posted by y8s View Post
fueleconomy.gov says 22/27 for the 5sp and 21/26 for the 6sp stock miata.

i'm gonna say it again: MBT means maximizing torque. more torque means more fuel. this is for power tuning.

in cruise you want to tune your AFR first and use timing to keep the burn in the cylinder. so what if you're beyond MBT in cruise? you've already changed the game by reducing fuel.

just raise all your timing into the low 40s
and raise your AFR targets below 70kPa to 15.5:1
stay off the gas on the highway.

you wont destroy your car.
I really like you, and Ima let you finish. But I think this A/F target is too rich. Remember, we're talking about a non-EGR application.

Anyway it does seem this whole thing is pointless.

Trey, you can't get better than 22mpg with an 8:1 compression motor.

/end
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Old 10-04-2009, 02:49 PM   #68
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That VW of yours had:
- stock computer running closed loop everywhere?
- electronic throttle?
- EGR?

/thread
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Old 10-04-2009, 03:35 PM   #69
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Quote:
Originally Posted by Spookyfish View Post
That VW of yours had:
- stock computer running closed loop everywhere?
- electronic throttle?
- EGR?

/thread
1991 corrado had
Haltech e6k
cable throttle
no egr

lol
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Old 10-04-2009, 03:42 PM   #70
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Quote:
Originally Posted by neogenesis2004 View Post
I didn't just figure out anything. I'm just ******* tired of these fail threads. I feel more dumb every time after reading them just from the shear idiocy.
Then don't open them. The rest of us seem to enjoy the discussion that's produced - feel free to click your "back" button.
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Old 10-04-2009, 05:04 PM   #71
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I'm sure y8s and Ben really get a ton of enjoyment out of repeating the same information over and over until Hustler finally gets the ******* clue.
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Old 10-04-2009, 05:17 PM   #72
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He's had a clue?
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Old 10-04-2009, 06:36 PM   #73
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Quote:
Originally Posted by Ben View Post
I really like you, and Ima let you finish. But I think this A/F target is too rich. Remember, we're talking about a non-EGR application.

Anyway it does seem this whole thing is pointless.

Trey, you can't get better than 22mpg with an 8:1 compression motor.

/end
15.5 is the hustler value. for you, pick any value you want.
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Old 10-04-2009, 06:48 PM   #74
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Quote:
Originally Posted by Alta_Racer View Post
He's had a clue?
I'm getting such a clue right now
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Old 10-04-2009, 07:37 PM   #75
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Quote:
Originally Posted by y8s View Post
15.5 is the hustler value. for you, pick any value you want.
Thanks bro

My clue's pointing this way.
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Old 10-04-2009, 07:50 PM   #76
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I have a clue. lol
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