I am currently running Ford 30# injectors with my injector constant set at 32. The lower VE's are pretty close, but my upper VE's are lean. There's not enough room to add enough fuel to the upper table (BLM's are around 150, and the stock table has values close to 100), so I have to change the constant. The question is: What rough percentage am I looking at per point of injector constant so I can get the best ballpark to start with.

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408cid 1985 Corvette
http://www.mojosgarage.com

 

What's happening is the injectors are different in how they behave, from the stock ones, since the scale is off further at one end then the other. Your just going to have to play with the fuel pressure injector constant to get close.

Having a large displacement engine is also making matters worse.

You know what the best sure is.

 

[QUOTE]Originally posted by Grumpy:
Your just going to have to play with the fuel pressure injector constant to get close.


Huh? Did you mean to say to play with the fuel pressure? Or is there a place in the prom for a fuel pressure injector constant. Or did you mean to put a comma after fuel pressure, and then injector constant? I would think playing with fuel pressure (up to a point) would make the most sense. Now, wouldn't this change the lower VE tables as well requiring some leaning out? I ask because I also have a 400 and I have a feeling Mojo and I have about the same air requirements.<g>