Question for my s/c'd guys. I want to upgrade my injectors what size cc injectors do you recommend?

 

I was thinking the 370cc off he s2k but was wondering if that was a bit much.

 

i don't think that's too much. I know NVA is putting RDX injectors (410cc?) in his s/c setups. Just from reading here, i think i remember that the S2K are a direct fit but more expensive. The RDX require a little work and are cheaper.

 

for the best idle quality and such, i would keep the injector size to the minimum size needed, so just large enough, so it all depends on how much power you are planning to make

with the smallest injector that meets your requirement, the better control over the amount of fuel into the motor it will have, since like each millisecond (it's more precise actually, but more for ease of explaining), it injects a smaller amount of fuel, so it has smaller steps of how much fuel it actually wants to inject into the motor, which is especially critical at say like idle, where you do not have much airflow, so really small requirements of fuel

that is also why those twin injector setups (for each cylinder) excel so well in driveability (even say just adding two injectors to your motor, one for each bank, would help too for driveability, since you can make them deliver most off the fuel you actually need up in the higher rpm's and higher boost)

 

RDX injectors are cheaper then the S2ks. Get those and use a FIC or emanage to pull back the fuel trims.

 

Not true. Using the smallest injector that is needed means that the injector could possibly max out on you. Run a slightly larger injector and have it tuned and (as long as the tuner has half a brain) the driveablity wont be affected.

 

i got rdx injectors. $34 for one and u need to modify them slightly. i have a diy on the tl side on how to modify them

 

obviously you use a slightly larger injector then necessary, but you don't put say a 500cc injector, when you can get by with one at 450cc, and still have it meet all fuel requirements under ALL conditions

so basically you figure out the size you need, then go one size larger, so it has some reserve, but not a whole lot though

 

btw diddy try this for injector sizing (i don't know exactly how accurate it is though, let alone needing some very specific numbers about your setup, that you might not know though)
anyways:
http://www.rceng.com/technical.aspx

 

Could you send me the link I can't find it.

 

Yea, the way I read your first post was "use the smallest injector you can get away with".

Id much rather run an injector and 75-85% peak then 95%.

 

$38
http://www.acuraautomotiveparts.org/...s=&view=normal

(number on picture)1 (part number)16450-RWC-A01 INJECTOR ASSY., FUEL (year)2008 RDX (list)50.95 (our price)38.21

 

I got RDX injectors, brand new, pm me, I'll sell them to you. I stayed at 6 lbs of boost and didn't need them.

 

Lol I meant the diy thread.

 

https://acurazine.com/forums/2g-tl-1999-2003-98/diy-fitting-rdx-injectors-into-tl-cl-716741/

 

Are you running the hbp?

 

yeah, did not fully mention that also , but yeah as long as following those guidelines and such, you try and keep the smallest injector on there that you can get away with, and not just way oversize it, so the ecu can keep the most precise control over the injection process

and also with keeping the injector to a minimum, you also give the fuel more time to fully atomize into the air, so more power, but also better fuel economy in the process
cause too big of a injector is just like dumping a can of gas on a fire at once, where if you put it in a nice fine mist, it is alot more controlled burn, let alone being able to burn every last drop of the fuel available

 

Thats what tuning is for. You can pull back on the injectors if youre flowing too much fuel.

 

but again you don't want to be slapping some 1000cc's injectors in there, when you really say only need like a 400cc injector though

 

 

 

he just likes to argue against people...don't worry civic

 

Lol, hes not wrong, we (collectively) need to clarify our responses a bit better so it can benefit all that search for answers.

 

I use RC 440. It's fine... emanage fuel correction factor. hbp about 7-8psi

 

How much were the RC440s?