Injector duty cycle
Thread Starter
Le Mans Master<br><img src="/forums/images/ranks/5k-6k.gif" border="0">
Joined: May 2007
Posts: 5,404
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St. Jude Donor '08-'09
Injector duty cycle
What should the target max be during WOT runs? I'm seeing 80% now and one run I saw 90% briefly. My take on this is that my next mod should probably include bigger injectors? Is that right?
Drifting
Joined: Sep 2004
Posts: 1,551
Likes: 4
From: Livingston Texas
I wouldn't run over 85%.
I'm not sure what mods you have but I lowered my inj. duty cycle 4% and increased 10 hp just by adding water/methanol injection on my NA LS2. Of course this requires tuning for W/I. Another bonus is lowering the IAT tremendously.
I'm not sure what mods you have but I lowered my inj. duty cycle 4% and increased 10 hp just by adding water/methanol injection on my NA LS2. Of course this requires tuning for W/I. Another bonus is lowering the IAT tremendously.
Drifting
Joined: Sep 2004
Posts: 1,551
Likes: 4
From: Livingston Texas
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
I'm at 80% with 40lb'ers N/A now. The stock 32's were fairly maxxed out before the swap but still wasnt causing a lean condition. The draw back to the higher duty cycle is heat. If you dont live at WOT all the time and just punch it on the street once in a while it doesnt really matter as long as you arent running lean up top.
Thread Starter
Le Mans Master<br><img src="/forums/images/ranks/5k-6k.gif" border="0">
Joined: May 2007
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Likes: 1
St. Jude Donor '08-'09
I'm at 80% with 40lb'ers N/A now. The stock 32's were fairly maxxed out before the swap but still wasnt causing a lean condition. The draw back to the higher duty cycle is heat. If you dont live at WOT all the time and just punch it on the street once in a while it doesnt really matter as long as you arent running lean up top.
So stockers are 32, you've got 40. What options are there for injectors that don't require a bunch of gymnastics to get them in. Anything bigger that 40? I'm thinking about putting the FAST intake on myself over the winter and then in the spring getting a Cartek heads/cam package. I'll have them port the intake to match the heads at that time. If I have to pull the injectors for the intake I'm thinking I might as well do that all together.
Thread Starter
Le Mans Master<br><img src="/forums/images/ranks/5k-6k.gif" border="0">
Joined: May 2007
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Likes: 1
St. Jude Donor '08-'09
I've got the basic bolt-ons now on my LS2. Headers, intake, stat, tune. Not too crazy about water/meth injection, though.
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Race Director
Joined: Mar 2005
Posts: 11,549
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From: Southampton NJ
My wideband sensor is coming Friday so maybe this weekend I'll get out and find out if I'm lean. I seriously doubt it as I don't think Julio would let that happen.
So stockers are 32, you've got 40. What options are there for injectors that don't require a bunch of gymnastics to get them in. Anything bigger that 40? I'm thinking about putting the FAST intake on myself over the winter and then in the spring getting a Cartek heads/cam package. I'll have them port the intake to match the heads at that time. If I have to pull the injectors for the intake I'm thinking I might as well do that all together.
So stockers are 32, you've got 40. What options are there for injectors that don't require a bunch of gymnastics to get them in. Anything bigger that 40? I'm thinking about putting the FAST intake on myself over the winter and then in the spring getting a Cartek heads/cam package. I'll have them port the intake to match the heads at that time. If I have to pull the injectors for the intake I'm thinking I might as well do that all together.
Thread Starter
Le Mans Master<br><img src="/forums/images/ranks/5k-6k.gif" border="0">
Joined: May 2007
Posts: 5,404
Likes: 1
St. Jude Donor '08-'09
Right. I know I'm OK now. I'm thinking about my next mods. Should I be including them when I think about heads/cam?