Hey, I am trying to figure out which size injector I need to run. These are my mod's currently. I am running factory injectors. I am looking to run about a 80% duty cycle and think I either need 680's or 750's. Any suggestions?

HKS intake w/ Filter
AMS FMIC w/ LICP
Forge Diverter valve
Forge MBC
Megan O2 bung
Megan Downpipe
Megan cat delete w/ resonator
Walbro 255lp
ARP head & rod studs
Brian Crower 280 camshafts
Brian Crower springs & retainers
AEM True Timing gears (I-5, E-3)
Decked head .015
NGK BPR8ES plugs

 

i am running 680s with my setup, mods are in my sig

 

If you plan on modding more I would just go with 1000cc .

 

880 Are The Biggest You Can Run On Stock Ecu And They Are Plenty Big Enough For Any Application With Stock Block And Stock Turbo.

 

So should I run the 750's then?

 

Stock Turbo? what PSI?
What is your dudty cycle now on stock injectors?
http://www.witchhunter.com/injectorcalc1.php4
http://www.rceng.com/technical.htm

 

Well all of those questions are answered. Stock turbo, 21psi pump 26psi race, duty cycle is 85+% on pump.

 

650's and 750's are on sale for $269 from Fuel Injector Clinic. The 850's are going for $280 per set of 4. Since you seem to want low D.C.'s, I'd go for the 850's that would give you some headroom in case you decide to upgrade the turbo.

 

You should not need bigger injectors yet. Put the money towards alky injection. I put 780cc injectors on my car because I plan to run a bigger turbo. They are not hard to install either.

 

I will not be running alk or meth. I know I dont NEED injectors right now, BUT I do not like running high duty cycle, I want low duty cycle. Thank you everyone for your help, I have purchased a set of 780 injectors for $266 shipped.