what's your preffered injector size

[SoguRacing]

ok guys, i'm still working on my build. I'm going to 350hp and debating on what injector size to use. i can get sard 550's for $370 or sard 850's for $380 for a hook-up. I'm going to control them with a power fc and was wondering if 850 is just way too big. I do want head room for more power in the future but for what i'm shooting for right now is 850cc just way too much? any input would help thanks!

[LimeLite Racing]

IMO I would use the 550's, It's what I have always beeen recommended for that HP.

[SoguRacing]

what duty cycle would the the 550's be running at with 350hp. just curious.

[LimeLite Racing]

Don't quote me, but 80%+ would be my guess... I could be wrong..

[garagelu]

I maxxed out my nismo 555cc injectors at 380hp. Honestly I would recommend 740cc injectors just for extra room to go. I believe deatschwerks sells 640cc injectors which would work too.

[SoguRacing]

Don't quote me, but 80%+ would be my guess... I could be wrong..

i didn't want to exceed 80% duty cycle for safety.


I maxxed out my nismo 555cc injectors at 380hp. Honestly I would recommend 740cc injectors just for extra room to go. I believe deatschwerks sells 640cc injectors which would work too.

then i might as well go with the 850cc. also, does having injectors that are far too big mean that it's tougher to control the flow rate?

[Def]

It can be a little harder to get the car to idle correctly, especially with cams that don't tolerate extremes in AFR(lean or rich) like stock cams can.

I say some Nismo 740cc injectors are good(they're what I use), but I'd go 850cc if I had those or 550cc to choose between.

[SoguRacing]

that's what i'm thinking. i have hks step 1 cams in m s13 SR. i think i'll go with the 850's

[aNskY]

definately 850's if you want room to grow.

[SoguRacing]

thanks for the input

[fliprayzin240sx]

I had to choose between Nismo 740 and Sard 850. I chose Sard cuz they were way cheaper for me. I paid $300 for a brand new set vs $550 for the Nismo 740s.

Anyways, its 850s isnt overkill, car idles fine and is very streetable. Injector % is set at 58% iirc.

[SoguRacing]

thanks homie! i'ma get them 850's when i get the cash.

[aNskY]

I had to choose between Nismo 740 and Sard 850. I chose Sard cuz they were way cheaper for me. I paid $300 for a brand new set vs $550 for the Nismo 740s.

Anyways, its 850s isnt overkill, car idles fine and is very streetable. Injector % is set at 58% iirc.



wish i knew SARD's were that cheap before i bought my Tomei 740's :smash:

[SoguRacing]

I've never thought sards were cheap. where did you get yours fliprayzin240sx (http://www.zilvia.net/f/member.php?u=3466)