ericwilloughby

Here is my pump build thread.

https://ls1tech.com/forums/fueling-i...l#post18142084

ericwilloughby

I spent the day researching where to tap into the ECM with my fuel pressure gauge so I can read and log in with HPT. I decided to go with the fuel tank pressure input since I'm no longer using it. Pin red 64. So I just cut the wire and sent it over to my fuel pressure sensor. Made a custom PID and figured out the equation via trial and error. Success. [PID.6420]*36-19

JAX04

iTrader: (17)

Am i reading that right? 45psi fuel pressure?

ericwilloughby

Yeah. 3 bar. Like a FORD. haha. Ive got 20 psi of return line restriction thats messing with my fpr. Im probably gonna change it to a FMU type from spa turbo

JAX04

iTrader: (17)

I thought you were on stock injectors?

Have you considered doing some parker push-lok hose for a feed, and return through the factory hard line? That would really open up your restriction. you MIGHT have a 100 bucks in stuff, i may even have a bunch of pushlok crap from my GTO i could send you.

Hell i even have the fitting that adapts the hardline to -an. I can send these to you.

JAX04

iTrader: (17)

****, i even have a set of old speed inc red anodzied fuel rails hanging on the wall with the crossover still on it...

The Alchemist

iTrader: (19)

Can you post some more of the data log, or maybe send it to me for your fuel pressure scan. I have mine going in through the HPtuners port (or whatever it's called) and the data is noisy. I can't beleive my fuel pressure jumps around as much as it's reading.

ericwilloughby

Kyle, your the kind of friend to have hahaha.

I'm using my 60# Deka's from the GTO.
For whatever reason, I just never felt right running fuel hose under the car. Hell, I wasn't gonna run the Hotwire kit until I got my bucket open and there was a burnt wire inside it. Post 104. I'm sure I should have but I didn't, and now my evap is converted over and I'm using its fuel tank sensor input for fuel pressure so screw it. But I do appriciate your generious offer. I am gonna have to go to a FMU with adjustable reference port. Or just live with 45 psi cause I can get 9ish AFR with that anyway.
I can always turn up the base pressure and that would also minimize my return restriction. Anyway....It works, It's just not perfect, $30 regulator. With hose and gauge. hahaha

ericwilloughby

Here's the whole run. It's about 15 minutes. Maybe you have a bad sensor ground? Although I didn't even use mine. Signal wire only. It's the blue wire taped into the sensor and ran to the ECM's Dark Green wire.

JAX04

iTrader: (17)

Right on brother.

Keep us up to speed on how she is working as your progress.

Cthulu

About time to take that thing to Milan and see what it can do!

SM105K

iTrader: (3)

Have you considered running all new fuel line, and using the stock fuel line as a return? I did 3/8 push lock hose with A/N fittings for my new fuel line, and then attached my FPR straight to my old stock fuel line as a return. I removed the fuel filter of course. You will probably have to move the FRP since the blower is there, but that is an option.

ericwilloughby

4 posts above yours

SM105K

iTrader: (3)

To be honest, I stopped reading his post after I saw injectors. I have the push lock set up on my car with a Aeromotive Fuel Filter, and Aeromotive FPR with boost ref. It is fed with Lonnies twin 255 fuel pumps and I have a SD tune with 80# injectors. I am also on E85.

ericwilloughby

Since I've got a proper fuel pump I went back to the 3" pulley yesterday. I put the hammer down today and let it wind out. I checked the high mem on the boost gauge and had hit 12# ****. I didn't have the laptop on it so I dont know how the afr was doing. I hope I didnt hurt anything

The Alchemist

iTrader: (19)

My issue is that HPtuners reads the signal coming from the aux input differently than the signals from the ECM, so you get a lot more data points that you have to filter through. Some have suggested adding a resistor to quiet it down, but maybe if I run the signal through the ecm, it will filter it better.
I tried looking at the log you attached, and without your config file, .cfg, it's tough to see exactly what you logged. I'm just curious to see if the data is smoother than what I'm seeing.

ericwilloughby

I'll attach it in the morning when i get home

ericwilloughby

I forgot about this. Sorry. Why the hell doesn't tech allow cfg files? So you'll have to rename it.

lsx67

iTrader: (5)

Any updates or feedback on this setup?

02PunisheReaper

I know this was sometime ago but curious on what Exact S/C you bought from TorqStorm. I see they have 3 options, LS Spacing, LS Spacing with PS, and Truck Spacing.
Looking to do the same you did but wanted to get more info first. Thanks