RomesEM1

I wanted to upgrade my fuel system but am not familiar with fuel injector sizing and how it works. I know ones i was looking at came in RC 270cc,310cc,440cc, and 550cc. My prospected setup would be passwordjdm intake, buddy club header, tanabe touring medallion, itr head, ctr cams, stock b16 bottom end. I will be getting it tuned when I get the mods and am currently running a chipped p28.

So, do i actually need injectors? is it really going to help alot, can an injector be too big? do i need a new bigger fuel pump also to run the bigger injectors? would i need a fuel rail and or FPR also? Thanks for any input!

ilikehonda

sounds like ud be ok on stock injectors

88Hatchy

x2

The Password:JDM is not ideal (or beneficial for that matter), consider an AEM cold air intake.

RomesEM1

really so theres like no point in buying like the 270cc?

T

RomesEM1

so your saying the passwordjdm intake is not that good? why? whats one of the best intake systems out there then?? thanks

ilikehonda

the best intake is subjective. just get a cheap ebay intake and throw a k&n on it. an aluminum tube is an aluminum tube.

no there is not point in upgrading to 270. if you upgrade upgrade so that you have room to grow with the set up.

RomesEM1

but that bigger size and bends and carbon fiber/carbon kevlar material of the password jdm, yowai-ss, and j's racing intakes would yeild better flow wouldnt it

nsxter

are you asking or telling

RomesEM1

Both

00Red_SiR

This is bad advice:

This is even worse:

Dat1BVtecN

With you mods listed above...stock injectors would be fine. But once you get into more head and block work, RC 310's are fine.

ilikehonda

prove it.

00Red_SiR

All I have to do is ask you to back up your statements. Have you ever dyno'd different air intakes on the dyno to see what works best? I have. Have you ever checked out other people's results from running a CAI vs a short ram? I have. Have you ever fooled around with different custom lengths of pipe on a dyno to find out how each affects the engine? I have. Unless you can say you have, and explain your back ground experience, I'd be willing to bet your opinion is based more on what you read than any real facts. I use to own the largest performance shop in my Province and was trained by Dynojet in Las vegas on how to use their 248c model we had access to in our shop. I'm not climbing on a soap box to say I know everything but in this case I know bad advice when I see it.

ilikehonda

i have played with the intake length on my motor. i took a cheap *** ebay intake cut it up and cut up some random lengths of the same wall aluminum and had fun. we played with it for roughly an hour making 21 pulls until we finally had a length that made the most power. Knowing now that you formally owned the biggest performance shop in your province you must know that every engine is different and will react differently to each and every part put on the car.

there was a thread running around here some where ( i cant seem to find it). they tested the aem v2, aem cai, and a few cheap short ram intakes. the difference was a few hp throughout the power band. the cheap 30 dollar intakes were 2-3 hp away from the aem.

there is no need to spend 2-300 dollars on an intake that has such small differences. I am not claiming that you will make more power with a cheap one but spending 80 dollars is a lot better than 2-300. spend the rest of the money elsewhere.

ruffrhyder

iTrader: (1)

So you're saying that if there were 2 cars racing, with the same exact setups, and both drivers had the same skill, the car with the 2-3 hp advantage wouldn't win?
In my opinion, on an NA build, where EVERY HP matters, I would gladly pay another 100-200 for the additional 2-3 hp.

Dat1BVtecN

You are a baller.

ruffrhyder

iTrader: (1)

People want to build a performance motor or modify their car and are worried about spending 100-200 more for a quality part proven to make power, wtf? I bought a used ITR intake pipe with a BPI flow stack and K&N filter for under $170, others pay over $200 for MSD wires and ignition setups for their all motor builds that don't do crap for performance.

ilikehonda

ill spend the extra 200 bucks on drag radials then that 2-3 hp wont make a lick of difference from a dig. that 2-3 hp will never run down the other car.

00Red_SiR

Owning the performance shop taught me that every motor may respond a little differently in total power output but ALL motors still follow the same rules when making power. That said, EVERY car responded better to a longer intake pipe (CAI) vs a shorter pipe (SRI) and ALL responded even more to a custom tuned pipe for their application.

The thread you are talking about which tested the intakes might have only made 2-3 whp (CAI) over the short ram but that's only at the peak. Have a look at the rest of the power curve and you'll see the CAI, longer pipe will always make more AVERAGE power over a shorter pipe. More average power = a faster car.

ruffrhyder

iTrader: (1)

Did you not read my post, I said "SAME EXACT SETUP" i.e. both motor's are built with the same parts, tuned, suspension, tires, etc. as well as equal driving skills, which car will win, the one with 2-3 hp more right?

That was my point, for NA, where every hp makes a difference, why wouldn't you spend the extra $100-200 for that extra 2-3 hp?

ilikehonda

because my point is that the money for the 2-3 hp on something easy like an intake can be spent elsewhere....that will make that 2-3 hp not matter.

that is why i brought up the tire example. everything the same except mine has drag radials and a hacked up ebay intake over the other car.