What size fuel injectors should I get for my 1997 Honda Civic ex, I just bought a turbo for it and trying to figure out what would be the best way to go...
Thanks

 

Depends on what turbo setup your running. How many lbs of boost? What are you using for fuel management? Are u getting in tuned?

 

310s will be plenty unless your running over 10 psi

 

T25, and I will be running about 8psi...I havent got as far as the fuel management any ideas about that too???

 

a t25 at 8psi ( a little bit too much for safetys sake IMO, go 6-7) will be fine with stockers. if you have a good tuneable fuel management, get some 310s and get it dyno tuned. if you go too big without a solid tune, it will run rich and kill your power and fuel economy.

 

Well, the alternative is killing the motor...

Ultimately, you size fuel injectors based on how much power you intend to make. Any changes to the motor such as cams, pistons, etc. will effect boost readings, meaning you can make more power off of a lower boost reading in the intake manifold. For sizing injectors you can use this equation.

Recommended for NA
Injector size in lbs / .45 X number of injectors

Recommended for boost
Injector size in lbs / .55 X number of injectors

1 lb/hr ~ 10.5 cc/min

If you are sizing injectors using 70% or 80% duty cycle, mulitply by .7 or .8 respectively.

Make sure your fuel pump and fuel pressure regulator are up to the task as well.