What size injectors?
#3
3.5 psi
iTrader: (1)
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.
#4
B A N N E D
iTrader: (4)
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)
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)
#5
Whats up with RDX owners?
iTrader: (9)
RDX injectors are cheaper then the S2ks. Get those and use a FIC or emanage to pull back the fuel trims.
#6
Whats up with RDX owners?
iTrader: (9)
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
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
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#8
B A N N E D
iTrader: (4)
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
#9
B A N N E D
iTrader: (4)
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
anyways:
http://www.rceng.com/technical.aspx
#11
Whats up with RDX owners?
iTrader: (9)
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
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
Id much rather run an injector and 75-85% peak then 95%.
#12
wham bam thank you ma'am
iTrader: (8)
$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
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
![](http://www.acuraautomotiveparts.org/acura/jsp/mws/catimgs/14stk701_e0310.png)
#14
Suzuka Master
Thread Starter
iTrader: (3)
$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
![](http://www.acuraautomotiveparts.org/acura/jsp/mws/catimgs/14stk701_e0310.png)
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
![](http://www.acuraautomotiveparts.org/acura/jsp/mws/catimgs/14stk701_e0310.png)
#17
B A N N E D
iTrader: (4)
![Tomato](https://acurazine.com/forums/images/smilies/tomato.gif)
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
Last edited by friesm2000; 05-29-2010 at 10:45 PM.
#18
Whats up with RDX owners?
iTrader: (9)
Thats what tuning is for. You can pull back on the injectors if youre flowing too much fuel.
#20
Whats up with RDX owners?
iTrader: (9)
![](http://static.open.salon.com/files/duh-duh1233387823.jpg)
![Tongue](https://acurazine.com/forums/images/smilies/tongue.gif)
#23
Whats up with RDX owners?
iTrader: (9)
Lol, hes not wrong, we (collectively) need to clarify our responses a bit better so it can benefit all that search for answers.
#25
Whats up with RDX owners?
iTrader: (9)
How much were the RC440s?
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