ok i searched and found conflicting answers. this is what I have on my FD:

bonez hard pipe intake kit with K&N cone filters
M2 downpipe
Pettit midpipe
Apex N1 exhaust
RE Amemiya B type ECU

I have a stock port engine and have not done anything else to the car other than what is listed.

Now I've read that I need to upgrade my inkectors and switch to a higher flowing fuel pump. Also, I've heard that the stock fuel system is fully capable of supporting my mods and that there are people in the 11s on stock fuel systems.

Who do I believe? I already upgraded the ECU, I knew from searching that I would over boost with my mods so I needed more fuel from a new ECU. But I just don't know if I need to upgrade the rest of my fuel system? Please help me out guys, I've already searched and I don't know if I'm OK with my mods.

 

your ecu will not controll larger injectors. Make sure boost is maintained properly and your fine.

 

Are you getting any boost creep or spikes?

 

no, but my ecu is tuned for ~15psi on both turbos so I am already boosting pretty high but I am assuming the fuel maps on the ecu are designed to handle this kind of boost.

 

Don't assume anything. Put it on a dyno with a wideband. Assumptions cost engines. At 15 pounds with no exhaust restrictions I am of the opinion that you will need to look at some bigger injectors; probably some 1300cc secondaries would do you just fine.

Using the stock injectors @ 1.03 bar boost, you are getting into the red at about 85% duty cycle at about 360 bhp at 7500 RPM. With 1300cc secondaries, that drops to 58%, giving you a much larger margin of error.

 

anything over 13psi sustained w/ stock injectors is asking for trouble.......

 

just get a boost controller and hold your boost to 13psi and you should be fine with the stock fuel system. if you want to run 15psi i would suggest getting some bigger injectors and a fuel pump.

 

15 psi is way too much for the stock intercooler. That means that the stock turbos are pushing over 17 psi. I wouldn't go over 13 psi with a stock intercooler regardless of fuel mods. Up to 14 psi should be OK once the intercooler is upgraded.