I am building a 100% street car with a AFR165, FTI, Performer, long tube setup and have been back and forth on which injector is better - 24 or 30?
Has anyone logged the pulse widths with a tweecer to determine if the 24's are undersized and pushing the duty cycle over 80-85%? (I've also heard that the tweecer doesn't log the pulse widths or duty cycle correctly and the value logged needs to processed with an adjustment value.) At what fuel pressure is this at?
I'd like to stick with the 24's, if possible, to help with idle quality, but don't want to push them too hard at WOT, either. I'm sure the 30's won't lean out at WOT or have their duty cycle too high, but having the 30's causes the pulse width to get smaller at idle (and consequentially the poor atomization of fuel), possibly contributing to poor idle.
I know a lot of people run with 24's and it's entirely possible that they're not running lean because of them, but they could be pushing the duty cycle to 95-100% which reduces the injector's life. This would be difficult to determine without actually knowing the pulse widths that the ECU is commanding.
Of course, if any of what I said is wrong, please point it out.
Thanks,
Rick
Has anyone logged the pulse widths with a tweecer to determine if the 24's are undersized and pushing the duty cycle over 80-85%? (I've also heard that the tweecer doesn't log the pulse widths or duty cycle correctly and the value logged needs to processed with an adjustment value.) At what fuel pressure is this at?
I'd like to stick with the 24's, if possible, to help with idle quality, but don't want to push them too hard at WOT, either. I'm sure the 30's won't lean out at WOT or have their duty cycle too high, but having the 30's causes the pulse width to get smaller at idle (and consequentially the poor atomization of fuel), possibly contributing to poor idle.
I know a lot of people run with 24's and it's entirely possible that they're not running lean because of them, but they could be pushing the duty cycle to 95-100% which reduces the injector's life. This would be difficult to determine without actually knowing the pulse widths that the ECU is commanding.
Of course, if any of what I said is wrong, please point it out.
Thanks,
Rick