Do I need to go to 1600`s ? with an Apex RX6
 

I am wondering if it is worth the extra expense to go to the 1600`s and a different fuel rail. I have the Apex RX6 and was going to go with a 1600 setup, but I have the Apex PFC and think it might be easier to get my 850`s bored to 1400`s. Will this be enough fuel, or should I go with the new rail with 1600`s? Can XS tune the 1300`s or 1400`s easier then the 1600`s

Also were is the BEST place to send my 850`s be bored and flow tested?

Any help is great, I am running out of time to get the car back together.

you will be fine with 1400cc injectors. some people even run 1200cc with no problem. most people turn to RC Engineering for their injector needs.

You will not need 1600 cc with the RX6 unless you want to run crazy amounts of boost. And you wouldn't want to run it with the PFC either. Get your stock secondaries bored out to 1300 by RC.

I use 1200 cc secondaries, although for more than 18 psi and >450 wheel hp you need something bigger.

I'm running 1200cc's on mine, i'm running 18psi, but have the boost slowly bleeding down to about 15psi by 8000rpms to keep my duty cycle below 85%

Thanks guys for the replies. I think I will try 1400`s and that should put Me in the middle, and alot less expensive.