Straight E85 and injector sizing help..........

[Weapon-X]

Ok guys, I'm a little out of the loop when it comes to appropriately sizing my injectors here.

I will be running STRAIGHT E85.

STOCK 7 bolt in EXCELLANT shape, DSM link w/wideband set-up,GM MAF/translator/blowthrough, cutom FMIC and piping, JMF intake manifold, BC 272 cams, DNP manifold, TD06 20g,

The injectors are really my only question area........... I have a set of 1000's here. The rest of my fueling is taken care of. I have plenty of pump , lines, rail, AFPR, etc.

Will the 1000's be enough for my needs running the straight E85 ? I will be running the 20g at its limits.

I want to keep IDC's in the 80-85% range.................... NO MORE !

Am I better :

1. running the 1000's

2. picking up some FIC 1150's for a little more headroom

3. getting some 1600's and not worrying about anything other then some low end driveability issues which can be worked out. I just don't want to be getting 1600's and ABSOLUTELY not need them. It's not worth it for me to go through the lowend tuning issues, etc.

Please reply with an explanation for your answer.

I appreciate and value your inputs.

Thanks fellas.

[Boosted98gsx]

What is your pump setup specifically? The injectors aren't going to be as much of a worry. If you're running a single walbro 255, then you need to upgrade.

1000cc's should be okay on a 20g for e85. They will support 55lbs/min at 100% IDC, or 45lbs/min at 80% IDC

e85 injector sizing

Originally Posted by DarkHorse

390cc @ 100% IDC will support 21.80 lbs/min. Global Correction: +50.00%
390cc @ 80% IDC will support 17.44 lbs/min

450cc @ 100% IDC will support 25.15 lbs/min. Global Correction: +30.00%
450cc @ 80% IDC will support 20.12 lbs/min

550cc @ 100% IDC will support 30.74 lbs/min. Global Correction: +6.36%
550cc @ 80% IDC will support 24.59 lbs/min

580cc @ 100% IDC will support 32.42 lbs/min. Global Correction: +0.86%
580cc @ 80% IDC will support 25.94 lbs/min

650cc @ 100% IDC will support 36.33 lbs/min. Global Correction: -10.00%
650cc @ 80% IDC will support 29.07 lbs/min

660cc @ 100% IDC will support 36.89 lbs/min. Global Correction: -11.36%
660cc @ 80% IDC will support 29.51 lbs/min

680cc @ 100% IDC will support 38.01 lbs/min. Global Correction: -13.97%
680cc @ 80% IDC will support 30.41 lbs/min

720cc @ 100% IDC will support 40.24 lbs/min. Global Correction: -18.75%
720cc @ 80% IDC will support 32.20 lbs/min

750cc @ 100% IDC will support 41.92 lbs/min. Global Correction: -22.00%
750cc @ 80% IDC will support 33.54 lbs/min

780cc @ 100% IDC will support 43.60 lbs/min. Global Correction: -25.00%
780cc @ 80% IDC will support 34.88 lbs/min

850cc @ 100% IDC will support 47.51 lbs/min. Global Correction: -31.18%
850cc @ 80% IDC will support 38.01 lbs/min

880cc @ 100% IDC will support 49.19 lbs/min. Global Correction: -33.52%
880cc @ 80% IDC will support 39.35 lbs/min

950cc @ 100% IDC will support 53.10 lbs/min. Global Correction: -38..42%
950cc @ 80% IDC will support 42.48 lbs/min

1000cc @ 100% IDC will support 55.89 lbs/min. Global Correction: -41.50%
1000cc @ 80% IDC will support 44.72 lbs/min

1150cc @ 100% IDC will support 64.28 lbs/min. Global Correction: -49.13%
1150cc @ 80% IDC will support 51.42 lbs/min

1200cc @ 100% IDC will support 67.07 lbs/min. Global Correction: -51.25%
1200cc @ 80% IDC will support 53.66 lbs/min

1600cc @ 100% IDC will support 89.43 lbs/min. Global Correction: -63.44%
1600cc @ 80% IDC will support 71.55 lbs/min

1850cc @ 100% IDC will support 103.41 lbs/min. Global Correction: -68.38%
1850cc @ 80% IDC will support 82.72 lbs/min"

[Weapon-X]

Thanks Boosted.............

Pump set-up is a twin intank Walbro 255 HP set-up feeding a -8 line from the tank to the rail.

[Boosted98gsx]

Then you should be set with what you have. I would save, and invest in the new FIC 1600's that are coming out when you have the free cash. They have supposedly fixed the idle issue.

[Weapon-X]

Thanks again Boosted for your input.

I just want to make sure I have the leeway I need for the straight E85.

I apologize if this is boring or repetitive questioning/information.............................

[Boosted98gsx]

if you want leeway, get some 1200's. But the new 1600's are going to be your best bet.

[Weapon-X]

Can you link me to some information or something i can view about these new 1600's ?

I actually don't have DSMlink yet, so I'm not part of the forums yet..................

[Boosted98gsx]

Sorry, I refuse to relay information from the DSMlink forums to public forums. You'll have to wait till you have link.

[Weapon-X]

Originally Posted by Boosted98gsx

Sorry, I refuse to relay information from the DSMlink forums to public forums. You'll have to wait till you have link.

No problem Boosted, totally understandable.

Only reason I don't have Link yet is because my car isn't even close to running. It probably won't be finished until early Spring. As you can see, I'm still in the process of sorting some minor issues out. Actually, the only things I really need to purchase is Link and the injectors. I have everything else.

I just didn't see any reason to buy Link now to have it sit around for another 6-7 months. I don't drive my car in the winter months.

I do appreciate your help so far.

I will try to give FIC a call. Maybe they would be able to help me out a bit further with some info on the NEW 1600's.

Thanks again.

[Weapon-X]

Originally Posted by Boosted98gsx

Sorry, I refuse to relay information from the DSMlink forums to public forums. You'll have to wait till you have link.

*UPDATE*

I'm now on board with DSMLink. I figured what the hell..................... I got to get it no matter what anyway. Why wait.

Just read up on FIC's NEW injectors sizes.

Thanks again Boosted for your above response's.

I'm still on the fence if I will be able to get away with the 1000's . I think I can, but it may be a little close. Like I said I don't want to go over 85% IDC's.

Maybe a set of 1150's or 1200's would suit me better like you said. At least I KNOW I will have some extra leeway.

I'd feel a little rediculous running the 1600's though with my mods. I mean I know they would be plenty on one hand, But then on the other hand I also know I don't need 1600's if that makes any sense.

[JayRolla]

I would go with 1200's. They cost about the same and will run just like the 1000's. Might as well be safe.

[Gamble97]

After reading this, I'm going to have to get 1600cc injectors when I switch to e85. At 23-24psi on 93 pump I'm flowing 49.9lbs per min.