Add injectors?
Add injectors? I just received my TSP H/C package in the mail. I went with the prc ls6 stage 2.5 heads and the 228r cam. 7.4 pushrods and an ls2 timing chain. I'm running an LS6 intake currently.
What do I do with injectors? Do I stick with the stock 28# injectors or do I upgrade them? If so, what size? Or do I wait to do the injectors until I add a FAST intake?
What do I do with injectors? Do I stick with the stock 28# injectors or do I upgrade them? If so, what size? Or do I wait to do the injectors until I add a FAST intake?
Staging Lane
Joined: May 2009
Posts: 96
Likes: 1
I have a similar set up but with the 5.3 stage 2.5. I'm installing a fuel pressure guage along with a set of after market fuel rails. Also, I have a wideband 02 sensor. What I was planning on doing was watching the injector duty cycle and fuel pressure to make sure I'm not losing pressure and maxing out the duty cycle. BTW I also have HP tuners. This is turning out to get more and more expensive at every turn.
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Verdad Gallardo I just received my TSP H/C package in the mail. I went with the prc ls6 stage 2.5 heads and the 228r cam. 7.4 pushrods and an ls2 timing chain. I'm running an LS6 intake currently.
What do I do with injectors? Do I stick with the stock 28# injectors or do I upgrade them? If so, what size? Or do I wait to do the injectors until I add a FAST intake?
What do I do with injectors? Do I stick with the stock 28# injectors or do I upgrade them? If so, what size? Or do I wait to do the injectors until I add a FAST intake?
...so I went out and bought flow-matched 42#er's from FIC 
Your gonna need at the very least some 36#rs, but 42's would leave some room for future upgrades. This: http://www.rceng.com/technical.aspx will tell you what you need for sure as far as injectors. Your setup will probably get you some where in the 430hp range so that would be a good guesstimate for the equation. I know every car responds differently to mods so thats why I say guesstimate lol
And just for reference I'm running cam only and my duty cycle is at 90% which is more than it should be but ok for me at the moment til I figure out what I'm gonna do next.
