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Need some help with 148, or GN ecm...

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Old Aug 5, 2001 | 09:22 PM
  #1  
Greenshamrock77's Avatar
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From: Pt Hueneme, CA, USA
Need some help with 148, or GN ecm...

First of all, I'm using WinBin, Is WinBin missing some tables, arrays, or values?

If that does not answer it, where do you adjust timing? I saw the field "spark advance(rpm vs load)," but it only goes to 2000 RPM.

How do you adjust fuel? I assume you play with the "VE???(rpm vs load)" field.

Finally in the VE field, do you divide the cell value by 255 to get a percent value?

If anyone can clear this up, I would be greatful.

------------------
82' Z-28. 327" w/ flat tops. 216/228/112LS. Pocket ported 041 heads 1.94/1.50 SS valves. World Class T-5 from a 91'. Best run? Runs with 2001 vette to 150mph! Soon to be converted over to TPI w/ supercharger.
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Old Aug 5, 2001 | 10:13 PM
  #2  
Grumpy's Avatar
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From: In reality
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Transmission: Janis Tranny Yank Converter
<font face="Verdana, Arial" size="2">Originally posted by Greenshamrock77:
First of all, I'm using WinBin, Is WinBin missing some tables, arrays, or values?
If that does not answer it, where do you adjust timing? I saw the field "spark advance(rpm vs load)," but it only goes to 2000 RPM.
How do you adjust fuel? I assume you play with the "VE???(rpm vs load)" field.
Finally in the VE field, do you divide the cell value by 255 to get a percent value?
If anyone can clear this up, I would be greatful.
</font>
Few editors has access to the almost 300 different tables switches and settings. Going to www.gnttype.org and getting a copy of trepeom will show ya the full calibration field

The timing that stops at 2000 rpm is the WOT spark.

You use MAF tables not a VE table with the MAF systems.

First things to do with a serious Gn is get a MAF translator (Plus), Scanmaster, and Direct Scan.
Then you can get serious with tuning a GN.
FWIW.

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Old Aug 5, 2001 | 11:18 PM
  #3  
Greenshamrock77's Avatar
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From: Pt Hueneme, CA, USA
thanks dude,

Would you use TREPROM to write your own def file in tunercat or something, or does tunercat already have a good def file? Apparently I am going to have to purchace better software to get into the meat of it.

I know a guy who lets me borrow directscan, but will soon be purchacing it.

What does the MAF translator do for you?


------------------
82' Z-28. 327" w/ flat tops. 216/228/112LS. Pocket ported 041 heads 1.94/1.50 SS valves. World Class T-5 from a 91'. Best run? Runs with 2001 vette to 150mph! Soon to be converted over to TPI w/ supercharger.

[This message has been edited by Greenshamrock77 (edited August 05, 2001).]
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Old Aug 6, 2001 | 06:28 AM
  #4  
Grumpy's Avatar
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Joined: Jun 2000
Posts: 7,554
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From: In reality
Car: An Ol Buick
Engine: Vsick
Transmission: Janis Tranny Yank Converter
<font face="Verdana, Arial" size="2">Originally posted by Greenshamrock77:

Would you use TREPROM to write your own def file in tunercat or something, or does tunercat already have a good def file? Apparently I am going to have to purchace better software to get into the meat of it.
I know a guy who lets me borrow directscan, but will soon be purchacing it.
What does the MAF translator do for you?
</font>
I use GMEPro, I do some incar stuff and like DOS stuff so I can use cheapy laptops.

tranlator lets you use late model MAF sensors, and with the GN ones being discontinued it's just a matter of time before you have to get it.
With the Translator plus you can change timinging and fuel, and get really close to the perfect chip with just twisting dials, if you have an extender chip.
If your doing you own chips with the translator, then you can dial in changes and see how it runs, then make chip changes and see how it runs. Saves alot of wear and tear on the prom holder
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