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| Subject |
Re: Please fill out your profile when you can |
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| Posted by |
Ferraro on November 25, 2004 at 2:36 PM |
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This message has been viewed 52 times. |
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| In Reply To |
Please fill out your profile when you can posted by SeedyROM on November 25, 2004 at 01:29 PM |
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| Message |
The issue I have with the JWT tune is that it's too rich.
(at least on my car it was)
My 92TT was running richer than 10:1 during inertia pulls.
It was a nice healthy 11.7:1 (open loop) until 3500 RPM where it began pouring on the fuel. After six consecutive runs, it was consistently way too rich at high RPM.
On the street (more load), it ran even more rich.I don't know the progress on ASH's Zemulator (it's been awhile since I've been here), but I like the idea of changing my own maps.
I tune Fords (yeah,I know) with the Superchips Custom Tuning software and a couple points too rich can mean a lot of missing power. 10:1 is much richer than it should be.
Generally, most turbo/supercharged applications will make the most(and safest) power from 11.5:1 to 12:1 AFR during open loop operation. As the old story goes: To rich, you're slow. Too lean, you're slow and it's gonna blow. I had several techs at JWT try to tell me why the Z needs to run at 10:1 (I had one dare to tell me 9:1 was optimal), and it simply isn't true. After a couple open loop runs, it alwo took at lease five minutes at idle for my Z to run stoich in closed loop (14.64:1). I'm not here to bash Wolf, but the tune I didn't know just how poor the tune was until I learned a little about tuning.
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14:36:27 11/25/04
