Has anyone installed a fuel rail and noticed a decrease in injector IDC when running E85? I'm looking to increase my current headroom w/ the 1150's; I'm planning on running a double pumper & possibly a larger bore fuel rail if it helps. I'm pretty sure I will only get to run low 20's on the boost w/ the HTA until I get some 1450's but any additional headroom couldn't hurt right? If the IDC's did go down, please let me know how much.

 

There are only a few fuel rails that actually have more flow area than the stock rail. I know for sure that the Perrin rail and the Wilson rail (has it been released?) have more flow area. There are probably one or two others.

 

I was actually looking at the Perrin previously as that was the only one I saw that increased the internal bore. Not much info on here regarding fuel rails.

I wound up purchasing the fuel rail brand new off of Perrin's website for $99; I think that is a steal compared to what they used to go for.

Perrin Fuel Rail: http://perrinperformance.com/product...O-7-8-9-Models

 

Wow! This is enlightening. I would think BR, AMS, ETS, or some of the other notable vendors would have more information about this subject.

 

Both AMS and BR sell rails that have slightly lower flow area than the stock rail. The flow cross-section has a round shape rather than the oval shape of the stock rail.