Page 1 of 1
Too high duty cycle?
Posted: Thu Sep 02, 2010 11:30 am
by Fairlane
Hi!
I found after datalogging that my max duty cycle was 123 and the max pw was 32. The AFR was fine. Do I need bigger injectors or how I should read those numbers?
Re: Too high duty cycle?
Posted: Fri Sep 03, 2010 6:03 am
by Matt Cramer
Realistically, anything over 90-95% means the injectors are held fully open. If this is only happening on acceleration enrichment, it's probably not a big deal; if it's happening at steady full throttle, your injectors are kind of marginal for this engine and may need an upgrade.
Re: Too high duty cycle?
Posted: Fri Sep 03, 2010 7:04 am
by Fairlane
Ok! I probably need replace my current 36 injectors with 42, because this happened at full throttle, when I was tuning my VE table without AE on. I just afraid, whats is going to happen to my idle with bigger injectors, because my pulse width is now only 1,8ms.
Re: Too high duty cycle?
Posted: Sat Sep 04, 2010 4:26 am
by flatbill
Can you tell me how many squirts and alternating or simultaneous you are set up for? Thanks, Billk
Re: Too high duty cycle?
Posted: Sat Sep 04, 2010 6:54 am
by Fairlane
2 Squirts, alternating, 8 injectors,306 cid v8
Re: Too high duty cycle?
Posted: Tue Sep 07, 2010 5:32 am
by Matt Cramer
Fairlane wrote:Ok! I probably need replace my current 36 injectors with 42, because this happened at full throttle, when I was tuning my VE table without AE on. I just afraid, whats is going to happen to my idle with bigger injectors, because my pulse width is now only 1,8ms.
It should still idle just fine. I've run larger injectors on motors with smaller cylinders.
Re: Too high duty cycle?
Posted: Tue Sep 07, 2010 9:00 pm
by Fairlane
I'll try the bigger ones. Thanks for the answers.