Injectors Upgrade

[tricstar]

I'm looking at upgrading the injectors on 33gtr as stock ones are maxed , spoken to different shops and get different advise, one says hks 640's but that means have to get hks feul rail also $$$$$ and they say sard 700 aren't very good, because they are twin spray and over feul when you put your foot down ,with big puf of smoke out back.. but seems to me lots have them ,, anyone experience this and what about economy ,, I curently get about 350 to a tank..

btw only after about 420-450 awhp

[R33-RB26DETT]

Nismo 600cc's should do the job, they are a straight drop in and you don't need to modify the fuel rail.

I also believe that they have 3 or 4 tiny spray nozzles which distributes the fuel better, as a finer mist leading to a more efficient combustion.

Edited October 1, 2008 by GTR-PWR

[tricstar]

thanks Harry.....but I can get my hands on some sard 700's for about $300 only in a weekend driver for two years vs $900 for nismo ones..

can any recommend or otherwise sard 700's

[R33-RB26DETT]

You can pick then up new for much cheaper than that buddy, try nengun.com or http://www.greenline.jp/ delivery takes a bit longer but it's worth it if you can hold out

Edited October 1, 2008 by GTR-PWR

[tricstar]

You can pick then up new for much cheaper than that buddy, try nengun.com or http://www.greenline.jp/ delivery takes a bit longer but it's worth it if you can hold out

holy s##t what a gold mine .. thanks heaps for that....for those prices I might as well get nismo

now I don't have to get robbed locally

cheers

[R33-RB26DETT]

No prob buddy

[H@ME]

thoes prices per injector?

[blind_elk]

I'm guessing you have an aftermarket ECU.

Why not get an aftermarket adjustable FPR, and bump the fuel pressure a few psi?

[tricstar]

I'm guessing you have an aftermarket ECU.

Why not get an aftermarket adjustable FPR, and bump the fuel pressure a few psi?

yes have dejetro

No body's mentioned FPR to me , just told I need to upgrade injectors... What is FPR etc

and yeah I've sent a question about those prices.. 1 or 6 ??

[tricstar]

ok just read a few things about feul pressure regulators

If getting an adjustable FPR and upping the pressure is sufficient why does everyone change injectors ??

injectors are at 90 -- 95% at the moment

[neo32]

fpr is much cheeper than new injectors if u only need a little more and u can simply increase the fuel across the hole tune but winding some pressure in

but if big power u chasing then injectors it is

ok just read a few things about feul pressure regulators

If getting an adjustable FPR and upping the pressure is sufficient why does everyone change injectors ??

injectors are at 90 -- 95% at the moment

[tricstar]

fpr is much cheeper than new injectors if u only need a little more and u can simply increase the fuel across the hole tune but winding some pressure in

but if big power u chasing then injectors it is

running 380 awhp with injectors 90 -- 95% looking to go for up to 450 awhp certianly not mre than that....

do you think thats poss. with just FPR upgrade

[rev210]

Not a fan of the aftermarket FPR bandaid. If you had to get one then the nismo unit bolts straight in but, there is no substitute for larger injectors when you need them.

Sards are good injectors, as good as any.

[R31Nismoid]

550 Nismo bolt in, and will be fine

Also, Sards are fine too... wherever you get your info from tricstar - i'd be hoping they aren't working on your car

[tricstar]

thoes prices per injector?

yip those prices are per injector....

am still going to get a set of nismo probly 600's uncase I decide to turn it up some more...

thanks guys for the info,, just goes to show its worth asking around and not just taking the word of one shop..

and nismoid they were the ones doing the work on my car ----- from now on I'll be doing my own researth.........cheers

[super_s13]

Do you need a aftermarket ecu to run the nismo injectors?

[R31Nismoid]

stock ECU's wont run anything other than stock injectors