how much am i looking at for injectors ?

[DJ_L3ThAL]

my car is detonating when i run high boost, 11psi+ so i thinki i need new injectors, how much would a new adequate set be approx ? and it it big labour or simple DIY shit ?

[inark]

i cant see why std injectors would not be able to handle that amount of boost... mine peaks to 14

[Al]

I agree with inark.

What fuel are you using?

I would put the car on the dyno to check your air/fuel mixtures, this will also determine the duty cycle of you injectors.

Before i put my fmic, wolf ecu and cold air intake i was running 13psi boost and making 183rwkw without detonation.

Now i am making 210rwkw without touching the fueling system.

If you still think it is a fuel supply problem, install a fuel regulator b4 you replace the injectors.

[meggala]

or you could get them cleaned

25-30 each should help

meggala

[DJ_L3ThAL]

hmm, welll yer, does nayone know what dr drift charges to check it all on a dyno ?

[predator]

well anything you can DIY if you spend the time.. I am sure you could get to the injectors if you pulled the intake plenum off, and then other various bits and pieces but it would take time. But I don't think that is your problem.

Just get a fmic - she'll then be sweet..as the prob most likely is the air going into your intake and thefore the combustion process is not cool enough. Therefore the air is too hot and more prone to pre-igniting -> detonation

See how much power you are putting out before deciding what else you need to do. You're not going to get much more than about 11psi anyway on the standard turb. If you get to 170-190 at the wheels i'd be happy with that until you want to go the next step and install a bigger turbo and things. Then you'll need to put aside about 3k or more for the turbo and some sort of aftermarket ECU or addon.

[DJ_L3ThAL]

i wanna get 190-200rwkw, the SAFC II (Apexi) is coming soon so ill install that then get her on a dyno and see what we can do bout boost and tuning the safc up, as at the moment im running about 8psi and have had no detonation with that

[inark]

8? *shudders*

[NismoR34]

Maybe the fuel pump is on the way out?

Just a thought!

[dAVE]

checked the gap of spark plugs. If yor running over 10psi, should be gapped between .8-.6mm

[R31Nismoid]

check the plugs Nath, also a service.

you ain't done that since you got it so thats the best start point.

I've gotta do a service/plugs too before i do much more.

so if ya wanna try potter around together one day then we can ?

But you should be able to squeeze 11 out of it without problems.

but start with plugs and then see.

[Guest INASNT]

there is no way u r gonna need new injectors with your current setup.

I am getitng sum new 600cc injectors to go with my new setup and they r gonna cost be about $900. I suggest u buy those 600c injectors for $900 and then when u realise they r 2 big for your setup u can sell them to me for half price. Deal?

[R31Nismoid]

$900 ?

that's a bit rich

i see hi-low'd 700cc for around that or a bit less

[Guest INASNT]

they r side feed injectors so they r a bit more expensive!

how do they actually high flow an injector??

[R31Nismoid]

no idea.

but i have seen for sale here.... stock ones flo'd to 700cc.

[Guest INASNT]

considering stock ones r only 320 its a bit hard to believ they r highflowed to double their capacity

[predator]

high flow an injector is easy if you think about it - you just increase the squirter hole a bit, which increases the amount of spray, which increases the amount of flow you get. Apparently you can highflow the standard ones and get 10-20% more out of them.

hmmm..denham, what sort of sillyness are you going now? You're going for 500hp or something silly aren't ya?

[predator]

..well easy in theory at least.. i wouldn't actually know how to do it in practice

[Guest INASNT]

Originally posted by predator666

high flow an injector is easy if you think about it - you just increase the squirter hole a bit, which increases the amount of spray, which increases the amount of flow you get. Apparently you can highflow the standard ones and get 10-20% more out of them.

hmmm..denham, what sort of sillyness are you going now? You're going for 500hp or something silly aren't ya?

close 400hp at engine

[DJ_L3ThAL]

i got a service (mechanic said all it needed was oil change and that was done) so i dunno, how cna i check the plugs myself ?