Need help deciding on injectors

[adidas5482]

I just installed the big 16g evo 3 turbo and I need injectors. I'm trying to decide between 550's or 650's. I can get 550's so much cheaper....but will they be enough for this turbo pushing anywhere from 18-20psi?

 

[PaleDSM]

550s are a pretty good injector for a basic 16G setup. That and an adjustable fuel pressure regulator will do you just fine. A few have pushed the limit of those injectors but that is at much higher than 19psi and street type peformance.

 

[iowaboostin]

550's will do you just fine

 

[ACKERSON]

I max out my 550's with a 16g on my galant. I would go with 650's or larger. Actually now that I think about it I maxed out my 550's with my 14b. It all depends on how much power you want to make ultimately. If you are going to be upgrading your turbo beyond the 16g at some point I would get something bigger than 550's.

 

[rebuilt65]

650's would give you a nice buffer zone. In the interest of safety, you could get them. A few sponsors on this site have them for maybe $70 more than 550's. Also, injectors that are not maxed out are less likely to burn the injector drivers(electronic components, transistors, that send voltage to the injectors) by staying on so long for each combustion cycle.
But, if you never plan on going over 16 lbs of boost, the 550's will be okay.

Check pricing again, though, I have seen sponsors with reletively cheap ones.
http://www.dejontool.com/Fuel.htm
http://www.diamondstarmotorsport.com/fuelparts.shtml

you get the picture.
Tuning is critical whatever you get.
Good luck

 

[PaleDSM]

I don't know the individual car setups but I find it hard to believe that so many people are maxxing out 550s for real on small setups. I know the potential of 14Bs but the majority of people running 14Bs or even 16Gs are in the 12s with traps <110. With things tuned right and fuel pressure used as well for tuning you should be able to run 550s.

That said, 660s will give you room to grow.