Pretty much trying to get the most bang for my buck.

jdm sr20de 10:1 motor.
t25 turbo currently on 7 lbs.
walboro 255.
370cc inj w/ stock side feed fuel rail
Nismo fpr


just bought a built head (port and polished, greddy rocker arms, greddy springs, sleeved, bc retainers)


I plan on pushing the boost up to 12 -14 psi.

My question is, what cams should I run and are my injectors okay or do I need to upgrade. I've done my reading and would like a set of jwt s4's because from what I hear you can't go wrong with them.

Injector wise. I'm at a loss, I want to upgrade but I'm not sure if I need to currently. Further down the road with more money I'm sure I'll go with some nismo 550's (615's) but at the moment I'm just trying figure out what I need to get this head on and running properly at the boost levels I want.

You should be ok with the 370s @ 12psi but keep an eye on your a/f ratio. If you dont have a wide band get one. I would not push a t25 past 12psi I know ppl do it but I would not its not worth it.

I do have a wideband. I figured the inj rating for the de is probably higher hp do to the higher compression?.

Still, looking to make 350 or so to the wheels. So as far as cams go, just trying to see if the s4's are the best cam for now and later when I upgrade turbo and inj.

I would recommend upgrading the injectors to be safe. I am running 16psi through my T25G with S15 480cc injectors and they are at 85% efficiency.

With the t25 370s @ 4bar will be fine but you wont make 350whp maybe 250 with a good tune. Keep this in mind to run injs bigger then 370cc you need an ecu or more advanced tuner then an safc and to make 350whp your going to need a turbo upgrade with all the parts then go with it. Hp does not make a car fast my 200sx made 258whp @10psi with a t25 on a 10:1 motor with s3 cams. I ran a few pals of mine at the track all of them make over 300whp and I was the only car running in the 12s on street tires. A t25 on a 10:1 motor with a good tune is plenty of power for a street car IMO.

370cc's at 4bar will technically max out at 290whp(not a good idea), BUT I would go for some 550cc+ injectors to be safe and definitely get atleast a t28, maybe even a gt28rs or gt2871r if you want 350whp.

Definitely get a very good tuned ecu before you go over 260whp or that 10:1 will be toast!

goodluck