Do i need to upgrade my fuel rail if I am upgrading my injectors??

Can I just buy larger injectors and throw them in without a RE-tune?

 

No need for a high flow fuel rail based on a level 1 E85 mod

IMO, the HF rail is only needed when at the high end of the power mods

Yes, You must re-tune after installing any exterior engine mods.

 

im running 1680cc injectors and double pumper on stock rail

 

That just about sums it up Wonder if the OP has upgraded the fuel pump

 

Fuel pump will be a def improvement, will def need a retune...

 

Yes. When I bought the car, it already had a fuel pump upgrade. Walbro 255

Thanks for the information.

I want to go with an e85 setup on 1050cc injectors or better.

 

why wouldn't you upgrade the stock rail? Aren't you running with a lot of power?

 

i'd go bigger on the injectors so you just have to buy once, the price difference between sizes isn't that much.

 

Sorry to thread jack, but at what point does it become neccesary to upgrade the fuel rail? Is there a certain HP level or boost level? Also, is there a big difference between the rails that are out there? I tried to search but didn't find a whole lot of reviews on fuel rails.

 

I am not familiar with the tuning side of things, so I dont know how big I can go without being too big! For example, I can shell out the extra 50 bucks and buy the 1450cc injectors. Will that require a double pump set up?

I am not sure how one figures these things out.

 

1450cc are fine on a single walbro 255 on stock turbo. heck that will be my choice of injector whenever i upgrade from the 1000cc and im on a BBK Full. i would definitely go with the 1450's at least they will be good if you decide to go with a larger turbo. also depends on the turbo

 

No def not

 

stock rails are pretty stout.

 

Yeah I've seen plenty of evos around here running huge injectors on stock rail

 

it just doesn't need it right now, i'll be at 450+whp very soon and still on stock rail. The stock one works pretty damn well, just doesn't look as purdy.