gexgexgexgex Posted August 6, 2005 Share Posted August 6, 2005 Ok i have a 1973 240z running megasquirt and spark extra an i have 450cc DSM blue top injectors that are low impedence(sp) and i cant seem to find the injector settings for them, this is what i found i and i want to know if it is any where near what they should be, becuase my car does not like to idle right, way too rich Injector Characteristics Injector Opening time(ms) 1.0 Battery Volt(ms/v) 0.20 PWM current limit % 100 PWM Time threshold (ms) 25.5 Required fuel 6.9 Quote Link to comment Share on other sites More sharing options...
envmyz Posted August 9, 2005 Share Posted August 9, 2005 Ok i have a 1973 240z running megasquirt and spark extra an i have 450cc DSM blue top injectors that are low impedence(sp) and i cant seem to find the injector settings for them' date=' this is what i found i and i want to know if it is any where near what they should be, becuase my car does not like to idle right, way too rich Injector Characteristics Injector Opening time(ms) 1.0 Battery Volt(ms/v) 0.20 PWM current limit % 100 PWM Time threshold (ms) 25.5 Required fuel 6.9[/quote'] Strange, my brother who has the 450 blue tops is having the exact same problem. I'm running 440 skyline injectors and had NO problems with my program, loaded my program to his car changed the REQ fuel to 6.9 and he said that he was getting the worst gas mileage that he has ever got. He said that on the way back from Indianapolis he changed the reg fuel to like 4.9 and told me it ran fine and was getting decent gas mileage... Anyone know more about these 450 dsm injectors? Quote Link to comment Share on other sites More sharing options...
onephatz Posted August 17, 2005 Share Posted August 17, 2005 i'm running dsm 450's req fuel is 6.8ms open time = 1.0ms voltage correct =.1 current limit =100 pwm =25.5ms what does your map look like at cruize/idle my cruise is around 42-53kpa i'm running about 55% volumictric efficent I'm running around 14.7:1 on the wide band so. if you want some pictures of my map, constants, enrichments lemme know. do some logging to see if you need to up your tps voltage threshold. mine had big drops in afr when it got a false accel signal. jesse Quote Link to comment Share on other sites More sharing options...
gexgexgexgex Posted August 17, 2005 Author Share Posted August 17, 2005 any extra pictures would be great, you can post here and help everyone else or if you cant email me at richardszparts@yahoo.com Quote Link to comment Share on other sites More sharing options...
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