Stroker87

im making the jump to E85 i got the sensor and ID1050x injectors, searching online i find post "stock" is fine and others saying you need an aux pump so just to be safe is there a in tank pump i can just swap to? seams simpler to just drop the tank and change it out then all the extra wiring and fittings for an aux pump

mod list
ID150x injectors
DSX flex sensor
kong ported blower
kong ported LPE snout
NW TB
Custom dual X pipe mid section
Synergy Air intake
2.55 upper pulley "or" 14% lower
Synergy under hood tank
EB heat exchanger
upgraded bricks maybe the C&R's

at this point im not looking to do heads, cam or headers. can these mods make 700+ rear wheel? id like to be 750'ish wheel hp but braking 700 club i think would be cool

your thoughts or advice is welcomed

ky13

You can definitely break 700rwhp with the factory pump on E85/with those mods. Are you planning on running pure E85? Running E75, my pump was starting to struggle (fuel pressure dropping/IDC climbing) at slightly above 750rwhp. I typically only run E50 or so though. The DSX aux kit makes the install fairly trivial fwiw (this will be my next mod). Wiring is plug and play.

Stroker87

Yeah just like to keep it simple and not add more things to possibly go wrong, i know its a PITA to drop the tank but im up for it if there is a drop in pump even if i have to mod a little

i never played with e85, I’ve been told just keep good e85 in it for best results run down to empty fill up with e85 then just keep it that way till winter storage so im not sure what E level

ky13

There is nothing wrong with running full E. I just don't have the pump to support it, currently. You should be fine with a 2.55 upper. I'm running a 2.35 upper. I wouldn't recommend storing a car with that much alcohol in the fuel though. Fill it with 93 before you store it. You're in a colder climate, so your winter blend E85 at the pump is likely to be E40 or below. Would be curious to learn if you really get E85 up there in the summer. There are a few stations local to me; their summer blends vary from E75-E90. Can't comment on the drop in fuel pump upgrade. Who is porting your blower/snout?

EvanZR1

I typically see 60%-70% E from local stations, and i dynoed 700whp on that in the middle of Texas summer with no issues on the stock fuel pump and 1050x injectors. I've monitored the commanded and actual fuel pressure using my Dashlogic in colder temps (around 40F) on 60% E, and they matched up just fine.

And yes, that mod list matches what I have very closely, so you should be right at/over 700whp depending on temps.

Stroker87

how do you guys know what level % the fuel is at?

no one just swaps out the intake pump?

ky13

The E67 ECU natively support flex fueling (it's just disabled by default). The GM flex sensor from DSX just needs to be wired to the correct pin on the ECU, then you'll be able to see an exact ethanol percentage (in the VCM Scanner (assuming you're using HPTuners software)). If you want to display the percentage on the dash, go with DashControl/DashLogic subsequently.

ky13

Stroker87

will add one of those to the parts list, I like how you can view everything in the dash and not need a to add a gauge