cablebandit

iTrader: (37)

has anyone run 96# injectors...stockpcm...impedance converter AT LS1 FUEL PRESSURE? i am wondering if they will idle ok. I have the 97/98 vetterails and cant dial down fp. 83# injectors are more than enuff but i found a god deal on some 96# injectors

smokinHawk

iTrader: (48)

I have those now on my car, but havnt started it up yet, have the harlan impedance converter and will be tuning with HPT 1bar RTT setup to get the idle straight then after thats set copy the tables over to the 3 bar (no RTT) setup.
once i get my cable back from my friend ill probably start it up and start messing with it. provided its not raining or snowing bad.

im not to worried about the idle, i think they will do ok.
just hope the 96's will be big enough

also still waiting on getting my tranny in, guy is taking for ever getting that RMVB and brake on it, good thing he's doing it for free or id be upset by now. :0

Tiago

iTrader: (27)

I run 96s on the stock PCM with the versafueller converter box.

If you have a 346 like me the idle will be rich (11.0 AFR) which sucks, but I deal with it. Ive reduced my injector pulsewidths the maximum amount I can before I start seeing adverse effects, still wasn't enough. But at any cruise RPM AFR is normal ~14
only idle can I not get lean enough.

I imagine if I had more displacement it woudln't be an issue.

cablebandit

iTrader: (37)

lol...JUST talked to Eric and he mentioned yours

koji777

iTrader: (3)

I'm running the 96's (versafuler setup) on my 408.... running 3bar sd tune..... I too run rich at idle!!!

LSs1Power

iTrader: (5)

What did your setup put down? and whats the Duty cycle of the injectors at those numbers?

What do u guys use for a base Fuel Pressure number?

koji777

iTrader: (3)

With my current POS Tune, I'm making 800rwhp, as far as duty cycle, ... I really dont know.... but I do know that I'm not even @ 70%. My base was set at 42 psi

Moparnos (The SLP Guy)

iTrader: (55)

i have the setup u talk about it is rich somewhat at idle

koji777

iTrader: (3)

Are you in closed or open loop? I am rich at idle, and I'd like to believe that this can be tuned out..... tuned properly... I'm gonna give Futral a call.

Jammer

iTrader: (1)

Any more input here... would some of us be better with 83lbers.. what are the effects of the rich idle... any work arounds??? I have the versafueler and am about to order injectors.

lbz34

iTrader: (3)

I am also on HPT 3 bar 96 lb on 408. Idle is fine at 14.7 (base pressure of 50 psi) but my throttle transitions are problematic, when i decel/off throttle=rich, then back on throttle=lean. WOT is ok . Makes 6 spd car not fun. I am trying some resistors instead of the versafueler box and I am thinking these may be my problem. I have tuned numerous 4 cyl 600+ HP FWD cars on 96 lb injectors and have seen 25-32 MPG on the 4 cyl cars and a great 15 AFR idle/cruise at base pressures of 55 psi on some. I am now at 4-5 MPG on the 408 lol. I definitely need more tuning time and probably a versafueler.

koji777

iTrader: (3)

if anyone has figured out the secret to running the 96# low inp/versafueler package properly I would love to hear what they did. I hate thinking that I need to change the setup to get a more driveable car.

black98ws6ta

iTrader: (77)

I have a 408 with a box and 96 lb injectors, base fp at 42 and its still mid 13's at idle. open loop efi live 3 bar.

lbz34

iTrader: (3)

Thinking maybe should have went efi live or BS3. Ill give it another few weeks of tuning effort then its off with the HPT. Maybe one with a few credits for sale if i dont get the throttle transition figured out. Hows the EFI stuff working??

Jammer

iTrader: (1)

Sounds like my plan with the versafueler and 96's is a bad plan at best... sticking with stock pcm...does anyone think 83lbers, or 72's would be more tuneable?

Slowhawk

iTrader: (12)

I've worked ona LS1 with 96's. They can be tuned right with the stock computer.
72's can hold 900rwhp with a boost reference reg.

koji777

iTrader: (3)

So are the 96ers' easier to tune with EFI Live? I'm boost referenced as well.

foff667

iTrader: (2)

considering both programs have near identical tables/parameters you can change I really can't see how...in the end its still up to the user to change the correct ones to the correct range.

lbz34

iTrader: (3)

Only positive I could see with EFI live is all parameters/tables are real time. Down side is EFI cost a bit more. With the throttle response problem I am having it would be nice to have some transient fueling tables in real time since there is not really a explanation of what table does what. So it is, make a big change, burn, start car, drive, repeat process with the transient fueling tables to see what does what.

Jammer

iTrader: (1)

Are you saying your product can make for a proper A/F ratio with 96 lb'ers?

And can you assist the tuner if necessary?

Im moving forward with 83 or 96's and have yet to decide on HP or EFI /RR combo.

Feel free to PM me part #s for HPT.

Slowhawk, thats all I needed to hear...it can be done. Your the man.. thanks.