80 lb injectors and E85

The_Six

Active Member
Nah.... rubbing it in was 28psi. 32psi is shoving it in. :eek:

Are you still running the 80s at 75%?
Has any one done the math how far will a bosch 044 in tank take the 80s ?
I have my tank out now so it would be a good time for me to decided what to do for fuel I was thinking of adding a 2nd 340 but I could always switch to a bosch 044 if it will do the job.
 

BEATAV8

The Engine Whisperer
Are you still running the 80s at 75%?
Has any one done the math how far will a bosch 044 in tank take the 80s ?
I have my tank out now so it would be a good time for me to decided what to do for fuel I was thinking of adding a 2nd 340 but I could always switch to a bosch 044 if it will do the job.

Yes it's running at about 77% duty cycle, sometimes up to 80% if the RPM's get up there. The fuel pressure may not be up at 77psi under those conditions but that's OK. It's still moving the fuel from the tank to the engine, and i'm sure it would richen up some more if I increased the duty cycle.

I saw the Supra pump Bob924 installed and I like it. I might do that or an 044 before too long.
 

The_Six

Active Member
So would the normal duel in tank 340s be enough to get 100% If I run 2 340s Ill just run them both all the time no hobs switch or any thing.
 

Boostsled

New Member
Question new to the buick tr scene but what are people seeing on stock turbo dw300 hotwire kit 4 inch intake with ls1 maf 3inch downpipe with 46mm wastegate manual boost controller 2.5 pypes exhaust 80lb injectors flow matched chip 6.1 have scanmaster and powerlogger and e85
 

TireFryer

The new kid..
I know this is a very old thread, but I’m looking into e85 (I got tons of leftover graduation money…) and I’m sick of dealing with my alky system. It’s leaking and I can’t find the leak, methanol in mad expensive and I need a new pump already after a year. I have 80# injectors, and currently a hotwired 255 walbro. I have a dw300 on the shelf, I’m looking for an 11.0 car. Can I get there with parts I have? I don’t have enough to buy new injectors and a massive fuel pump, how far can I get on 80’s, a dw300 and -8 feed and -6 return lines? I wouldn’t be opposed to a bigger pump like a 450 or something. But I just want to run 11.0. The car trapped 117 with a phone app on a back road 1/4 mile, 25 psi on 93/alky. Would I be able to stay at that same power level with the injectors and just a new pump and lines? E85 station by me has 86% ethanol..
 

TurboBob

Resident mad scientist
Staff member
its worth a try, proceed with caution. You will be maxed on the injectors and the pump. Turn the boost down a few psi and see what you get.

Of course you will need to get the chip changed for the new combo.

Bob
 

TireFryer

The new kid..
its worth a try, proceed with caution. You will be maxed on the injectors and the pump. Turn the boost down a few psi and see what you get.

Of course you will need to get the chip changed for the new combo.

Bob
I’ll get a new 6.1 chip for e85. I’ll just turn the car down until I have some extra $$ for big injectors and a hellcat pump or something along those lines
 

Mr.Spool

Well-Known Member
I know this is a very old thread, but I’m looking into e85 (I got tons of leftover graduation money…) and I’m sick of dealing with my alky system. It’s leaking and I can’t find the leak, methanol in mad expensive and I need a new pump already after a year. I have 80# injectors, and currently a hotwired 255 walbro. I have a dw300 on the shelf, I’m looking for an 11.0 car. Can I get there with parts I have? I don’t have enough to buy new injectors and a massive fuel pump, how far can I get on 80’s, a dw300 and -8 feed and -6 return lines? I wouldn’t be opposed to a bigger pump like a 450 or something. But I just want to run 11.0. The car trapped 117 with a phone app on a back road 1/4 mile, 25 psi on 93/alky. Would I be able to stay at that same power level with the injectors and just a new pump and lines? E85 station by me has 86% ethanol..
You should be going low 11s with your 117mph😉
If you want to go fast pm me there are a few different ways to achieve your goal.
1st is listening
 

MNwe4

Member
These guys know what they're talking about. Here's my data point: 80lb injectors, -8 feed, -6 return, Walbro 415/430 pump, hotwire kit, base FP bumped up slightly, stroker motor, 21 psi, 6265 turbo. Best ET 10.70 @ 126. Duty cycle jumped to 120% right at the traps. On the street it doesn't go above 100% since I don't stay in it that long. AFR holds target though. Food for thought...
 

JP112_89

Well-Known Member
Hi guys, this thread was great. Extreme chip 80#/E85..Bob helped me a lot. Talked to him several times and yesterday, gets back to you within minutes. Helped me straighten out other issues with my car to get me to this point. Really appreciated it.

Used 535 hellcat cat pump. I didn't do anything with the return line.. new sock, upgraded wiring, E85 hoses, stock hangar modified,, etc .. TTA doesn't have issues like the GNs with fuel pressure with stock stuff. I can drop fuel pressure as low as 36#, maybe lower, tested at idle...

Had a closed loop extreme chip, 22* timing, a/f 11:6,:1 26# boost...ls1 maf,6776 .85 turbo. Took the plugs out they look great. Drives really well no complaints.
 
Top