[DC5R] Fuel Rail + Injectors

[Tiu]

What size injectors are people upgrading to on their k20 for the DC5R? Also which brand's fuel rail?

Looking at getting kpro, while doing that i'm thinking of upgrading the fuel rail + injectors. What size injectors do you guys recommend?

Running at the moment:
Gruppe Intake
RBC IM
Toda Header + Toda Cat
Trust Catback
Mugen N1 Ecu

[tinkerbell]

what are your A/F ratios?

why do you think you need larger injectors?

i was not aware the Mugen N1 ECU was adjustable?

[JORDS]

are you running alcohol? e85?

[fatboyz39]

injectors will give you 100kw gain.

[VTECMACHINE]

what are your A/F ratios?

why do you think you need larger injectors?

i was not aware the Mugen N1 ECU was adjustable?

Rich!

He needs them...

Mugen ECU isn't adjustable, but he said that he will be changing to Kpro.



LOL, guys very helpful.

[tinkerbell]

stock injectors are fine for that setup...

anyone who is telling him he needs new injectors for this setup just wants his ca$h...

[T-BaGGeR]

what Dave said, stock injectors are more than plenty and the fuel rail is just bling.

[Tiu]

Rich!

He needs them...

Mugen ECU isn't adjustable, but he said that he will be changing to Kpro.



LOL, guys very helpful.

Thanks LOL

Yep, i'm getting the KPro along with the TB at x'mas.

[DC2RKID]

u have any idea what the duty cycle is like atm ? what gives u the idea the injectors are topping out...lol to vtecmachines comment haha rich ey :P hmm sounds like u may need smaller injectors :P id just get the kpro and TB and then work out weather u need injectors then....no point spendin the money if u dun need to

[Tiu]

u have any idea what the duty cycle is like atm ? what gives u the idea the injectors are topping out...lol to vtecmachines comment haha rich ey :P hmm sounds like u may need smaller injectors :P id just get the kpro and TB and then work out weather u need injectors then....no point spendin the money if u dun need to

i just wanna look around since our dollar is good that's all. i'm not saying i'm getting it right now, just wanna browse around and still to get to know the stuff bit more since i dont know much about it.

[mikoZ]

Tiu, good decision, Kpro better than Mugen at this stage...IMO

[VTECMACHINE]

Leon, just listen to you know who. You know he doesn't just want your money, and you know once they are in, your car will hammer and will last. Why you asking this stuff on forums anyways, lol?

[m0nty]

I see plenty of mods you could carry out before injectors/fuel rail. Speak to Phil (Dr Honda) for some advice Leon.

[tinkerbell]

Why you asking this stuff on forums anyways, lol?

forums are good places to seek the input, opinions and experiences from a very wide variety of people

[tinkerbell]

searching the internet is another source of information:

http://www.hondata.com/dynok20a2nos.html

Injectors don't make any difference to power. Plus bigger injectors are of no use without tuning. The car made 212.5 on stock injectors, 213 hp on 440 cc injectors. The 0.5 hp was probably from a slightly colder run. The car made 283 hp @ 7000 rpm (with nitrous) on stock injectors at about 94% duty cycle, which was about the same power as with 440cc injectors. By putting in bigger injectors and running the nitrous to higher rpm I hoped to make more power, but the power falls of after 7000 rpm with nitrous (at a guess the stock exhaust system is too restrictive).