question for people w/turbo 420a's

[birdman]

Are my stock fuel injectors good enough to hold up for the star stage 2 turbo kit or should i upgrade the injectors before putting on the kit? please help

 

[green95hrcgs]

I run stock injectors on my Stage 2 HRC kit @11psi. I richened the mix with an S-AFC tho. I think you will be fine if you do the same, but not any higher. Good luck

 

[brynden29]

Well, I have heard of guys using their stock injectors with stage 2 kits. I could not. I could only boost about 7 psi before my injectors were maxed out and not pumping enough gas. It was quite frustrating. Once I put the 415 injectors in, everything was great. So I guess it depends. But you SHOULD be able to run 8 to 10 psi with your stock injectors. Just hope your bottom end hold up!!!

 

[EvuLFleA]

I would rather get larger injectors and lean rather than run the injectors duty cycle at nearly 100%. At least our injectors stay open if they fail.

 

[Kirby]

Your stockers should be fine up to about 8psi. Anything over and you should upgrade. I think brynden's injectors might have been clogged or something. 8psi is the reccomended limit and that's what I run now with my stockers.

 

[jlbf]

What about fuel pump, I'm about to buy the HRC kit and I've heard stories about their pump being loud as hell, so what other's do you recommend?

 

[TurboRS]

HRC's fuel pump is loud cause its an inline pump...Star kit uses an intank. All of em are pretty loud, which i find comforting, cause that way you know its at least working.i would recommend getting a Walbro 255 Hi pressure intank pump if you go with the HRC kit, it comes in the Star.i would advise AGAINST running over 8psi with the stock injectors. you can get some 30lb Accel Injectors for 44 bucks a piece from Summit Racing that drop right into our cars, great deal for the money. the per piece part # is ACC-1050130 at summits site if i remember correctly. if you call them, they will say they only sell them in packs of 8, but the phone people are wrong, they sell em by the piece. you can run these injectors without a SAFC if you have a SFMU to lower idle pressure, or use an SAFC to lean them down at idle. they should be good for up to 15psi if ran at a high fuel pressure, proably around 110-115psi.