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Print in friendly format Send this term to a friend  1983
The year with no Corvette production. There is only one surviving 1983 Corvette. The one 1983 Corvette is in the National Corvette Museum, (NCM), in ...
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FATED 1985 EPROM Tune
Guru Newb
Texas
157 Posts
Member since:
2007/12/30 0:00



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Looking through the Bins on my 85 EPROM and I can't seem to find any that would modify closed loop running other than Min BLM and Max BLM. From what little I have read I am beginning to think that adjusting the fuel pressure is the only way to affect closed loop mixture with the stock computer. Is this true?
Posted on: 2008/1/7 4:47
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FATED RE:1985 EPROM Tune
Guru Newb
Texas
157 Posts
Member since:
2007/12/30 0:00



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As I have found. Thought I would post for others that may be interested.
On the 85 the only changes that can be made are at WOT and Idle. In closed loop it tries for 14.7 to 1. Can be changed somewhat with fuel pressure adjustment.
Posted on: 2008/1/11 21:09
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j3studio RE:1985 EPROM Tune
Elite Guru
Western Philadelphia Burbs
4247 Posts
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2007/9/2 0:00



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Thanks for the information - I looked in my various fuel injection books back when you made you first post and couldn't find a specific discussion. I think I may need some tuning references ...
Posted on: 2008/1/11 21:20
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