What Size Injectors For Hks Gt-Ss?

[etang789]

What size injectors should I for HKS GT-SS? Thinking ASNU 800cc or may be trying their new 14 holes 1050cc??

I have these for my R34 currently:

- HKS GT-SS

- Nismo fuel pump

- HKS fuel rail

- SARD 534CC injectors

- Tomei fuel regulator

[Ben C34]

Either

[Dose Pipe Sutututu]

ID1000

cheap, does the job, proven, sell your FPR install stock one.. rip skidz

[gtr jet]

E85 or PULP? I'm assuming PULP since Hong Kong.

If pulp then the injectors you have will do the job.

[Ben C34]

E85 or PULP? I'm assuming PULP since Hong Kong.

If pulp then the injectors you have will do the job.

That makes even more sense.

[SimonR32]

http://www.deatschwerks.com/products/fuel-injectors/sport-compact/nissan/skyline/rb26dett-skyline/1989-2002-rb26dett

Pick your poison! Direct easy drop ins that idle perfectly and no issues with E85, I would be going the 1200cc as there is no downside apart from the small price increase

Shipping is usually less than a week from the USA

[89CAL]

Yeah was going to say, the ones you have now should be fine

Unless its a GTR and you are running twin GT-SS turbos?

But I ran a GT2835 HKS turbo with 555cc injectors, plenty of room left in them

[Super Drager]

On 98RON your current ones will do just fine.

[etang789]

Yeah was going to say, the ones you have now should be fine

Unless its a GTR and you are running twin GT-SS turbos?

But I ran a GT2835 HKS turbo with 555cc injectors, plenty of room left in them

Yes it is a R34 GTR so its twin HKS GT-SS

Here is the details on the build project http://www.skylinesaustralia.com/forums/topic/443066-finally-a-gtr-r34-owner/

On 98RON your current ones will do just fine.

Yes it is 98RON

But now I see the injector cycle on the MFD is at 100% on full boost

Edited May 13, 2014 by etang789

[89CAL]

Yep twins on a GTR is a different story lol

I'd go 1000cc, just to have that peace of mind of a bit of headroom

[etang789]

ID1000

cheap, does the job, proven, sell your FPR install stock one.. rip skidz

Why install the stock FPR?

[Dose Pipe Sutututu]

Why install the stock FPR?

Works fine, no need for aftermarket. Looks better too

[etang789]

Works fine, no need for aftermarket. Looks better too

understood.

I was also thinking to switch back to stock fuel rail as well, is the upgraded HKS fuel rail necessary? I have no clue since this is how it is when I bought the car

[Dose Pipe Sutututu]

Stock works well, however if you don't have the stock items those will work fine. No need to spend more

[gtr jet]

The injectors you have in the car should be more than enough for the power those turbo's can produce.

I'd say who ever tuned the car has set the injectors to 100% at WOT.

When you have your foot down does a big puff of black smoke come out and it smells fuelly?

[R31Nismoid]

The injectors you have in the car should be more than enough for the power those turbo's can produce.

I'd say who ever tuned the car has set the injectors to 100% at WOT.

When you have your foot down does a big puff of black smoke come out and it smells fuelly?

Totally agree.

Stock 440cc GTR injectors will do 300rwkw without even a rail pressure increase. If 555cc injectors can't do 340rwkw which is all GT-SSs will make... then there is something wrong.

If you need a bit of headroom, just add an extra 3-4psi to base fuel pressure, that alone will be enough once up on boost to give the fuel supply needed.

Definitely a waste of money changing ANY parts from what is currently fitted - they will do the job.

[etang789]

The injectors you have in the car should be more than enough for the power those turbo's can produce.

I'd say who ever tuned the car has set the injectors to 100% at WOT.

When you have your foot down does a big puff of black smoke come out and it smells fuelly?

it smells fuelly for sure and my rear bumper is black, well I dont have a cat thou...

Totally agree.

Stock 440cc GTR injectors will do 300rwkw without even a rail pressure increase. If 555cc injectors can't do 340rwkw which is all GT-SSs will make... then there is something wrong.

If you need a bit of headroom, just add an extra 3-4psi to base fuel pressure, that alone will be enough once up on boost to give the fuel supply needed.

Definitely a waste of money changing ANY parts from what is currently fitted - they will do the job.

Thanks for the advice. I guess I will just have it retuned for now... just need someone that is willing to do remote tune for me.