is there a difference besides impedence? like spray patern, rapidness, and nozzles that control how it atomizes. the reason i ask is that i have 4 rc 380 injectors for a mustang but my bro tells me it wont work because the spray or something is different, is this true? (he put them in his escort and made it run so pig-rich that he couldnt rev over 3k, thats why i dont want to try it in my motor)
differences in injectors
- Thread starter slowhatch
- Start date
well if they are bigger than the stock escort injectors the computer will still think it has the smaller ones and be pumping in more fuel than it knows.
for example?
^^ that just looks like a difference in how dirty they are, because the spray isn't that great out of them.
The injectors go off the pulse that your ECU gives it. They just open up more and dump fuel in like crazy because they are bigger. That is a reason that you need to get a boosted car with bigger injectors tuned. The pulse comes from the computer, you should be able to use those if i'm not mistaken, just make sure you have a reputable shop tune it for you.
Good luck
The injectors go off the pulse that your ECU gives it. They just open up more and dump fuel in like crazy because they are bigger. That is a reason that you need to get a boosted car with bigger injectors tuned. The pulse comes from the computer, you should be able to use those if i'm not mistaken, just make sure you have a reputable shop tune it for you.
Good luck
so increasing the size of the injectors yeilds more hp....
say on a realtively stock engine (intake, headers, exhaust) you add bigger injectors? what would happen?
would port/polishing the head yeild better mix (ore air + more hp)?
say on a realtively stock engine (intake, headers, exhaust) you add bigger injectors? what would happen?
would port/polishing the head yeild better mix (ore air + more hp)?
no, increasing injector size with a stock ECU causes you to run rich. Your injectors are never running at full duty cycle(well i hope not) the goal is to run a little over a 12:1 Air to Fuel ratio Stoichometric<sp?TippinOver said:
ah, so the ecu still sends out its ususal amount, but the bigger injectors just leak it out....right?
anyway to tune a non vtec ecu to realize bigger injectors?
anyway to tune a non vtec ecu to realize bigger injectors?
can you direct me to a site or etc that could help me out on that?
theres 2 types of injectors- low impediance ~5 ohms (peak and hold) and high impediance ~15 ohms (saturated). civics/integras after 91 run saturated injectors, preludes/accords after 96. saturated does not require a resistor box, peak and hold does. saturated injectors make more heat, and are slower to react than peak and hold, which is why most larger injectors are peak and hold.
spray pattern is vital to proper cylinder filling. using injectors designed for a different type of vehicle (such as rx-7 or mustang injectors) isnt really reccomended. dsm injectors work because their pattern is very close to a hondas. the rx7s is not, because the injector sits at a very different angle and requires the fuel to be sprayed differently. people using rx7's tend to have half the combustion chamber overly rich, with the other half overly lean, because of poor mixing.
spray pattern is vital to proper cylinder filling. using injectors designed for a different type of vehicle (such as rx-7 or mustang injectors) isnt really reccomended. dsm injectors work because their pattern is very close to a hondas. the rx7s is not, because the injector sits at a very different angle and requires the fuel to be sprayed differently. people using rx7's tend to have half the combustion chamber overly rich, with the other half overly lean, because of poor mixing.
thanks
would uping from y7 to y8 injectors and tuneing the ecu gain any hp? or would i need bigger?
what fuel flowing amount would be good for a na D build up?
would uping from y7 to y8 injectors and tuneing the ecu gain any hp? or would i need bigger?
what fuel flowing amount would be good for a na D build up?
BIGGER INJECTORS DO NOT EQUAL MORE HP. stop thinking that. MORE AIR mixed with the correct amount of fuel makes hp. using larger injectors is only necessary if your are injesting more air than the stock injectors can add enough fuel to achieve a proper a/f ratio. all saturated b/d series injectors are 240cc, no matter if its a d16y7, d16z6, b16a, or b18c5. all the same. you wont need injectors with an n/a d series buildup. you wont make enough hp.TippinOver said:
yes, but apparently tippin over is unable to read.io_303 said:
if they are rc injectors, then calling or emailing rc is what you need to do.slowhatch said:
dsm injectors are your best option. cheap, and they spray like civic injectors like everyone said.