Gt-r Injectors

[Cam84]

Just a quick one guys.

looking at doing afew mods this year, looking to push 250-270kw. just wondering if GT-R injectors would do this? and would it be safe or at thier limits.

tanks guys

[R31Nismoid]

280-300rwkw - all dependant on condition.

[Parag0n]

You don't want to hit anywhere above 85% duty cycle, I'd recommend upgrading to some Sards, in the end it could save you an engine.

[Chrispy]

Meh, higher than 85% is ok if they are in good nick.

[bigmikespec]

Mate I am making 250-270kW with standard injectors on a GTR no problem. Don't have a dyno sheet handy but duty is fine.

[full_stick]

I had 255rwkw with stock injectors fuel pump and turbos before upgrading. The tuner advised at that point that my AFM were maxed out but the injectors were fine. I only just upgraded to nismo 600cc so if you're after some R34 gtr injectors I've a set for sale so PM me if you're interested mate...

Edited January 9, 2010 by full_stick

[Brandon]

I had 255rwkw with stock injectors fuel pump and turbos before upgrading. The tuner advised at that point that my AFM were maxed out but the injectors were fine. I only just upgraded to nismo 600cc so if you're after some R34 gtr injectors I've a set for sale so PM me if you're interested mate...

Doesnt sound right... anyway nothing is the same when you're comparing old cars.

Just to give TS an idea, I know someone on the forum with another 33 N1 that has 330rwkw with close to 98% injector duty cycle and the only mod he's done are ecu, avcr, catback and cat (not 100% sure about cat but should be right). The only difference between N1s and standard gtrs are the engine, oil cooler, oil pump, water pump and no a/c. The other features doesnt really affect your power as much anyway (kelvar front diffuser etc).

Having said that, thats with an aggressive tune according to him and mine's running a safe tune with 255awkw at less than 90% duty cycle.

[N I B]

If you have an aftermarket ECU like ,Haltech, Vipec,Wolf etc Plugins you can remove the Injector resistor pack and make very good power.

Not Nistune or PFC tho, they must keep the resistor.

[full_stick]

Doesnt sound right... anyway nothing is the same when you're comparing old cars.

Hey mate just wondering what doesn't sound right? The maxed out AFMs at 255rwkw? It was Dr Drift who did that original tune and who provided that advice.

Edited January 10, 2010 by full_stick

[bigmikespec]

Hey mate just wondering what doesn't sound right? The maxed out AFMs at 255rwkw? It was Dr Drift who did that original tune and who provided that advice.

Yes, they should not be any where near maxing out at 255kW.

[Brandon]

Yes, they should not be any where near maxing out at 255kW.

+1. Never heard of anyone maxing out stock afm around 300awkw. Stock items should be sufficient for that but I must agree, injectors, fpr and fuel pump are very nice to have items to archieve that. Maybe check if the afm you have now are clean and in sound condition.

[OMGGTR]

being an ass n budding in... im after around 230awkw on my r32 rb20... will r32 gtr injectors fit my rb20 ? after reading they might save me buying new ones u kno... if so ill just get some 2nd hand gtr ones n get them cleaned

[Brandon]

being an ass n budding in... im after around 230awkw on my r32 rb20... will r32 gtr injectors fit my rb20 ? after reading they might save me buying new ones u kno... if so ill just get some 2nd hand gtr ones n get them cleaned

I think the difference between them are side and top feed + low impedance (gtr).

[R32 Driver]

rb20 is top feed rb25 is side feed i believe

[OMGGTR]

I think the difference between them are side and top feed + low impedance (gtr).

Can any 1 confirm they wont fit my rb20 ?

[STATUS]

Can any 1 confirm they wont fit my rb20 ?

they fit but need a resistor pack or individual resisitors fitted on each +ve feed.

[OMGGTR]

Ok doing some research found a old topic (search feature didn't work found through google.)

http://www.skylinesaustralia.com/forums/Gt...det-t62674.html

In all gtr injectors fit but u need the resistor pack and u gotta do some soldering

but i dont think that hassle is worth it coz if u get different injectors later on taking off the resistor pack again will be draining... but i dunno if you will need to meh...

[Rekin]

Ok doing some research found a old topic (search feature didn't work found through google.)

http://www.skylinesaustralia.com/forums/Gt...det-t62674.html

In all gtr injectors fit but u need the resistor pack and u gotta do some soldering

but i dont think that hassle is worth it coz if u get different injectors later on taking off the resistor pack again will be draining... but i dunno if you will need to meh...

Check out my thread for info on how to fit the resistor pack. A bit simpler than ripping apart the whole loom.

http://www.skylinesaustralia.com/forums/Gt...hl=gtr+injector

[Parag0n]

Meh, higher than 85% is ok if they are in good nick.

You'll end up leaning out, if you want to blow your engine run your injectors at 90% duty cycle + for a small period of time and watch what happens

The injectors go static and your fuel delivery goes out the window, you'll end up with a blown head.

A tuner shouldn't be tuning your injectors to run close to 100%, if he is, then he is a moron and just wants you back into the shop so he can rebuild your engine and get some extra cash

Check out my thread for info on how to fit the resistor pack. A bit simpler than ripping apart the whole loom.

http://www.skylinesaustralia.com/forums/Gt...hl=gtr+injector

I don't really reccomend the resistor packs, they are usually dodgy, spend the extra and get a FJO Injector Driver and it will work properly.

http://www.fjoracing.com/products/injdrvr/

Edited January 17, 2010 by Parag0n

[Brandon]

You'll end up leaning out, if you want to blow your engine run your injectors at 90% duty cycle + for a small period of time and watch what happens

The injectors go static and your fuel delivery goes out the window, you'll end up with a blown head.

A tuner shouldn't be tuning your injectors to run close to 100%, if he is, then he is a moron and just wants you back into the shop so he can rebuild your engine and get some extra cash

I already know of someone who ran Targa with 98% (max) a couple of times.