Fuel injector questions

[95Blitz]

When I open up caledit and go to the injector size the factory setting is 19 and min pulsewidth is 131.

I have 60lb injectors now.
If I change the injector size to .0167 and the min pulsewidth to .0007 the truck won't start.

But if I set injector size to 60 and keep the min pulsewidth at 131 it will start right up.

I have the ICY1 ECU and the Tweecer RT.

I ran 30lb'er in the truck for about a year with the injector size set at 30 and the min pulsewidth at 131 but I did have an FMU.

SO whats up with that why can't I do the injector size in lb/sec.?

 

[95Blitz]

ANYONE :sigh: :help:

 

[giddyup]

http://www.nloc.net/vbforum/gen-1-t...tweecer-information/171614-tweecer-faq-s.html

read that carefully......steve tells you what so change to get it to start.

 

[95Blitz]

http://www.nloc.net/vbforum/gen-1-t...tweecer-information/171614-tweecer-faq-s.html

read that carefully......steve tells you what so change to get it to start.

I read that but I'm still wondering why I have to but 60 in for the injectors not the .01667?

It will run with 60 but not with .01667 :headscratch:

 

[giddyup]

did you change this.........? the "fuel crank pulse width function" must be changed or you will flood your engine while cranking because the bigger injectors are just dropping too much fuel. Try inputting the following "Y" values from left to right: .061,.049. .014, .013. .005, .005, .006, .008, .008, .008.

 

[giddyup]

also steve told me this for my 50s....maybe it will help.

Would recommend starting out on a min. injector pulsewidth of .000875