2006+ Honda Civic Forum banner
1 - 20 of 31 Posts

·
Premium Member
Joined
·
419 Posts
Discussion Starter · #1 · (Edited)
With the following mods on my car: tegiwa airbox, FD2 intake pipe and TB, RRC manifold. And these mods to come soon: FD2 cams and Toda manifold.

Can my stock injectors keep up? How high will be the duty cycle?
A friend of mine brought this to my attention. It didn't occur to me at all.

He suggested a Walbro fuel pomp and RDX 410 cc injectors.

Is it sufficient to install only 410 cc injectors? Or would 750cc injectors be even better?

Or does it have to be a combination of the fuel pomp and injectors?

Regards
 

·
Premium Member
Joined
·
2,125 Posts
I'm running similar to you except with lumpier Toda A3 cams and making nearly 270bhp at the fly. I'm on stock injectors and they're doing just fine. You don't need to worry about injectors just yet :)
 

·
Registered
Joined
·
286 Posts
with toda a3's full bolt ons and raised compression ratio 13.3 afr , stock injectors and stock pump were maxed out
power at 270 also
with a walbro gss342 , its was fine , or stock pump and 410 rdx inj
dont recomend the setup dear lunar , it may have worked out for you , but it is dangerous
stock injectors are fine for the setup of the initial poster though
 

·
Premium Member
Joined
·
2,125 Posts
with toda a3's full bolt ons and raised compression ratio 13.3 afr , stock injectors and stock pump were maxed out
power at 270 also
with a walbro gss342 , its was fine , or stock pump and 410 rdx inj
dont recomend the setup dear lunar , it may have worked out for you , but it is dangerous
stock injectors are fine for the setup of the initial poster though
My injectors are working at 90% duty at full power. TDI South are very happy with my set up and that's good enough for me :)
 

·
Premium Member
Joined
·
419 Posts
Discussion Starter · #6 ·
im running something similiar and im on stock injectors...
How much is your duty cycle? The duty cycle @ +7000 rpm worries my friend.
He says a Walbro fuel pomp and stock injectors would be great for this.
Is this not a case of better being safe than sorry.
 

·
Premium Member
Joined
·
419 Posts
Discussion Starter · #7 ·

·
Premium Member
Joined
·
419 Posts
Discussion Starter · #16 ·
I'll think I'll change the fuelpomp and after that I can see on the datalogs if I need bigger injectors or not.

Anything over 85% is not good.
 

·
Premium Member
Joined
·
4,695 Posts
Can't see fuel pump helping much as it is good to flow way over 330bhp.
Changing injectors is the correct route when required in your application. ;)
I'm happy driving stock injectors as high a 95% on NA setups as its only at peak for a split second and they are good quality. If it was RCs I'd be thinking about up rating anything over 75% :lol:
 

·
Premium Member
Joined
·
419 Posts
Discussion Starter · #19 ·
Ok, I'll wait and see my datalogs when the car is mapped.
 
1 - 20 of 31 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top