Injectors

[Khoover1988]

what are some good reliable fuel injectors. Im not looking for hp gain or mpg gain, just looking to freshen the fuel system up, plus one of my injectors has a tiny hairline crack in it, doesnt leak fuel but all are stock and showing their age. Truck has 184,000 miles on it.

 

[Khoover1988]

Nothing?

 

[dapepper9]

Factory replacements. Whether that be parts store or amazon. But you need factory black reman. Don't buy any of that 4hole ********

 

[Khoover1988]

Yea i was going to go OEM, sometimes the “better” aftermarket is just more troublesome. I was just courious if they had a better oem like Bosch or something like that. Thank you for the advice!

 

[Fitz-0518]

yep. Made the mistake on my 07 5.7. Thought the "highly rated" after market injectors were superior. They did not play well with the ECM and miles on the truck. As sated, put in OEM injectors, truck ran like new.

 

[dapepper9]

Too often those "performance" injectors are for something completely different. There's a thread on here by JbMobbs where the pn was for like some Saab or something and not at all close to right rating

 

[Fitz-0518]

Yep. As I remember, I believe the OEM injector vendor for the 03 5.7 was Bosch. I understand that the current vendor for the new engines is Denso. So they click.

 

[kyle watson]

I run a hopped block and corvette injectors just fine. but if you have a stock build stay with stock injectors. its all about knowing what your doing and the repercussions.

 

[dapepper9]

I run a hopped block and corvette injectors just fine. but if you have a stock build stay with stock injectors. its all about knowing what your doing and the repercussions.

Lol define hopped block. I can almost guarantee what you have does not require injectors

 

[kyle watson]

bored, cammed, 10/1 compression, 53mil TB, EQ monster heads, intake manifold, high stall, and sct tuned and gear swapped. what else did I forget?
WHAT ORAFICE ARE YOU TALKING OUT A?

 

[dapepper9]

bored, cammed, 53mil TB, intake manifold, high stall, and sct tuned and gear swapped.
WHAT ORAFICE ARE YOU TALKING OUT A?

Exactly my point. No need for injectors with that mild setup. Factory will handle 325-350 wheel hp, a number you're nowhere near

 

[kyle watson]

I don't run my injectors hotter than 80% duty cycle. who needs to stress out old stock when you could fill the bill easily with 26lb injectors!
AND WHAT MAKES YOU THINK you know what I got?

 

[dapepper9]

I don't run my injectors hotter than 80% duty cycle. who needs to stress out old stock when you could fill the bill easily with 26lb injectors!
AND WHAT MAKES YOU THINK you know what I got?

Factory wouldn't have been at 80% duty cycle. Your 26# injectors, is that at 43.5psi? 39psi? Or maybe our operating pressure of 50psi? Little hint, our factory units are 22#@3bar (43.5psi) and come out to 24# at operating pressure. Assuming your 26s are @3bar, that's roughly a 30# flow rate and way overkill. Most N/A strokers don't even need that.

And as for what you have, you make 265-285whp, dyno dependent. It's been thousands of times.

 

[kyle watson]

you are 22 years old. and I know better, to argue with people cant be enlightened! you'll learn and not from me but through blunt force experience!
24lb injectors put out more at 49psi.
you cant run performance injectors without dyno runs, fuel mapping, data logging and a new pcm tune.

 

[kyle watson]

although you did get one thing right. factory wouldn't run injectors at 80%. my build was blue printed and the injectors are flow matched to a 3% tolerance. factory injectors are pulled from a mass been of unknow flow rates. and have been proven to be crap from the start. the large metal body ev1 Siemen injectors get hot and fail in a performance application.

 

[dapepper9]

you are 22 years old. and I know better, to argue with people cant be enlightened! you'll learn and not from me but through blunt force experience!
24lb injectors put out more at 49psi.
you cant run performance injectors without dyno runs, fuel mapping, data logging and a new pcm tune.

Ahhhh. The dig at my age. They always try it and they always fail. Age bashing from the guy with a 2nd grader's reading comprehension

1. Factory are 24# at operating pressure. If you're referring to your claimed 26# injectors now, then those would be 24#@3bar. Not simply "26#"
2. "Performance injector" doesn't mean ****. They simply flow more fuel.
3. I never claimed you could run higher rate injectors without accounting for them in the mapping. Idk where you're getting this. Of course they need adjusted for. Thing is, your build doesn't need larger injectors lol. Im going to go out on a limb and bet that your sct tune came from either Marty Fletcher or Sean at Hemifever

 

[dapepper9]

factory wouldn't run injectors at 80%. my build was blue printed and the injectors are flow matched to a 3% tolerance. factory injectors are pulled from a mass been of unknow flow rates. and have been proven to be crap from the start

What the hell are you trying to say? None of that makes any sense.

1. "Factory wouldn't run injectors at 80%": well no **** sherlock. I said YOUR "build" wouldn't run factory injectors over an 80% duty cycle
2. "My build was blueprinted": what? Please tell me more on that. I'd love to hear more bs
3. "Factory injectors are PULLED FROM A MASS BEEN OF UNKNOW FLOW RATES": again, what? English man, English!

 

[kyle watson]

chrystler didn't care if your injectors are flow benched. who's your daddy? you need a lot of lapses filled in there. sorry unfortunately for you.

 

[dapepper9]

chrystler didn't care if your injectors are flow benched. who's your daddy? you need a lot of lapses filled in there. sorry unfortunately for you.

You can't form a complete sentence and i need lapses filled in? Bruh LOL. You say Chrysler didn't care if injectors are flow benched.... name 1 car manufacturer that flow matches the brand new injectors they're putting in vehicles on the assembly line. You can't, none of them do.

 

[kyle watson]

and why are chrystler injectors inferior? do you want me to repeat it?