redbird555

You will max out ls9 injectors ls9 injectors only flow 52lb/hr despite many saying they flow 58. You will need 30% larger of an injector to keep the same duty cycle on e85. Really you need 60s at a bare minimum and even that will be close


To the guy running 600+ whp with them on e85....those injectors are likely well over 100% Dc and going static. Itsfine as long as the engine doesn't go lean but it certinaly doesn't mean they're "ok"

Turbo2L

I'd source a used set of ID850s and a new set of o-rings and go to work.

EDIT: There are easily 5 sets available in the FS section as of right now.

beavisr1

I'm looking for a set also but I don't see any available in th FS section. A couple of old post that haven't been updated.

Turbo2L

There were a few posts from July and August of this year. They could be fruitful?

MTPZ06

This guy has a NIB set... https://www.corvetteforum.com/forums...ic-id850s.html

JaredW

You don't think an 850cc is going to be too much injector? Aren't they 80lbs @ 3 bar?

redbird555

Normally that might be the case but ID injectors have such excellent control they will work on just about anything. ID even has a video of ID2000 idling on a Honda 4 cyl

I run 1050x and only make 540whp duty cycle is like 40% and the car idles and drives just like stock no problems. You will be fine with id850. Just use their data and it's a drop in and go deal

Turbo2L

Well said. The data provided with these is really the difference maker and allows them to be dialed in with minimal effort compared to others. I've also had good luck with FIC on other platforms but wanted to see what all the hype was about. I definitely have not been disappointed.

lt1z

What if I told you they were fine on duty cycle running on E70 well over 600whp and with the correct Walbro E85 pump installed? A 60 lb fuel injector will support quite a bit of N/A power, even on ethanol.

If you want to put a 1050 in it you can but it just isn't even close to being necessary. I use IDs on a ton of applications but this just isn't one of them. 43% more injector over stock can cover these max effort stock bottom end builds. Though I occasionally have to explain to people that more injector does not mean more power if you don't need it.

redbird555

I'm not here to argue if you want to believe that it's fine. However after seeing it with my own eyes as well as many zr1 and cts v owners maxing out injectors under 600whp on e85 it's not the case.....if you're running more fuel pressure with an aftermarket pump, maybe you are maybe not, that's one thing and not pertinent to the discussion

lt1z

I have the logs that back up my statements. A ZR1 or CTSV with a SUPERCHARGER will use much more fuel at 600whp then an N/A vehicle due to BSFC and commanded EQ ratios. I am also talking about injectors that flows 60lb at 4 bar not the stock LSA/9 injector. That is roughly 43% larger then stock in this LS7 application. The fuel pressure is regulated using the proper pump just keeps pressure from dropping off and keeps the injectors flowing what they are supposed to.

Do you do your own tuning or did you just decide having 1050s made you feel good so you went that way?

redbird555

Uh no it won't sorry lol hp is hp how you generate it has little bearing on what the demand is. Fuel pressure and fuel type determine that.

I have tuning sofware and watched a set of ls9 injectors max out 90% D.C. At 540whp on my car. Then decided to go ID1050x because the injector is fully stainless inside and made to better handle e85

Again guys max out those injectors all the time under 600whp on e85 so why you have some unicorn is a riddle

lt1z

Its no riddle and I'm not talking about my own car, which does actually have 1050s but is making enough power to put those over 80% DC. I'm talking about multiple LS7 cars. The 1050X is a great injector I just don't use them on N/A applications unless the owner likes spending extra money. BTW: my data is taken at sea level as well so altitude is not a factor. If you think 600 N/A hp has the same fuel consumption as 600 hp on boost then I can't help you.

redbird555

Prove me wrong man....so far you've offered nothing

Oh and the car I put those injectors on afterwards made 475whp (ls3) and was hitting 65% on e65.....so another 100whp isn't going to max those out? Lmao

lt1z

Once again I am not talking about LSA/9 injectors that flow 52 lb at 4 bar. I am talking about injectors that flow 60lb at 4 bar. You have built a lot of 600+whp E85 LS7s? CF is always a good laugh.

JaredW

So would a set of FIC 850's be way too much for my setup?

redbird555

I mentioned lsa/ls9 injectors would be maxed out I said 60s would be close.....the whole doscussion was about lsa injectors being too small which you said they wouldn't be. I never said 60s wouldn't work. Sounds like you're confused on what you're wrong about here man sorry

lt1z

Read my posts before replying... thanks.

redbird555

Seems there's a miscommunication between us. I don't want to clog up the op thread anymore carry on

JaredW

Soooo.. FIC 850's??