50lb injectors
02-20-2008, 06:56 PM
#1
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50lb injectors has anyone tuned the racetronix 50lb/hr injectors and had them idle well? i need some numbers or something. i either get a 11:1 afr strong idle or a 15:1 ruff idle. can't sem to get a smooth strong idle that won't dip and die after a rev. PLEASE HELP!!!!
i loaded the latest tune and log this one idles at 13.8ish but when you rev it and the rpm comes back down it drops to fast then tries to get it back but just dies. and if you hold it at say 1200 rpm the rpms bounce up and down by about 300 rpm or so this gets ugly when driving at low speed.
i figured out what i need, i think ...... i just don't know how to do it. i need the PW to never go below 2.5ms but it needs to sit at 2.5ms during idle. it dies on the dip down because PW goes below 2.5. any ideas?
i loaded the latest tune and log this one idles at 13.8ish but when you rev it and the rpm comes back down it drops to fast then tries to get it back but just dies. and if you hold it at say 1200 rpm the rpms bounce up and down by about 300 rpm or so this gets ugly when driving at low speed.
i figured out what i need, i think ...... i just don't know how to do it. i need the PW to never go below 2.5ms but it needs to sit at 2.5ms during idle. it dies on the dip down because PW goes below 2.5. any ideas?
Last edited by 4.8T; 02-20-2008 at 07:13 PM.
02-20-2008, 07:14 PM
#2
50's are tough to get right on a lot of cars. Their opening time is very slow. I recommend that anyone considering 50's to get the 60's instead.
The 50's are very voltage sensitive & I have seen them act totally different on 2 cars with the exact same engine combination. I have no idea what you have them in, but try a 42-45# flow rate setting & keep increasing the injector opening time/voltage offset until the mixture stabilizes.
I know this does not help you much, but at least others will not make the same mistake.
The 50's are very voltage sensitive & I have seen them act totally different on 2 cars with the exact same engine combination. I have no idea what you have them in, but try a 42-45# flow rate setting & keep increasing the injector opening time/voltage offset until the mixture stabilizes.
I know this does not help you much, but at least others will not make the same mistake.
02-20-2008, 07:19 PM
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50's are tough to get right on a lot of cars. Their opening time is very slow. I recommend that anyone considering 50's to get the 60's instead.
The 50's are very voltage sensitive & I have seen them act totally different on 2 cars with the exact same engine combination. I have no idea what you have them in, but try a 42-45# flow rate setting & keep increasing the injector opening time/voltage offset until the mixture stabilizes.
I know this does not help you much, but at least others will not make the same mistake.
The 50's are very voltage sensitive & I have seen them act totally different on 2 cars with the exact same engine combination. I have no idea what you have them in, but try a 42-45# flow rate setting & keep increasing the injector opening time/voltage offset until the mixture stabilizes.
I know this does not help you much, but at least others will not make the same mistake.
