Thread: No fuel cell 3?

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  1. #1 No fuel cell 3? 
    GrandPrix Junkie Sabrewings's Avatar
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    I'm curious. A member was looking over one of my scans and saw that fuel cell 3 never comes up. Even when I go to 99.63% TP even though PE is set to come on at 30% TP.

    The PT's log just shows fuel cell 4, but the STFTs and LTFTs lock to zero... Weird. Anyone know why my PCM won't go to fuel cell 3?
    2004 Impala LS - got some mods sold!!!
    2009 Subaru Impreza WRX STI

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  2. #2 Re: No fuel cell 3? 
    GTX Level Member Andrew_99GTP's Avatar
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    Is the care going into PE? I have never scanned a N/A car before so I don't know if they are different or not. Can't imagine they would be. Also what fuel cell is it in at WOT?
    Red 2dr 99 GTP"Old" Z7 t66, A/A IC'd, Custom Heads, 65# Inj, ST2 Cam, Meziere Elec Pump, JP Double Roller(with machined crank gear), Plogs, PLX W/B, Powrtuner SOLD

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  3. #3 Re: No fuel cell 3? 
    GTX Level Member Andrew_99GTP's Avatar
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    Posting just for reference because I couldn't remember them all.

    0 -- Idle
    1 -- Decel
    2 -- Light Load / Engine Not Running
    3 -- High Load
    4 -- Med Load
    Red 2dr 99 GTP"Old" Z7 t66, A/A IC'd, Custom Heads, 65# Inj, ST2 Cam, Meziere Elec Pump, JP Double Roller(with machined crank gear), Plogs, PLX W/B, Powrtuner SOLD

    "New" 2007 Duramax ccsb with a few mods
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  4. #4 Re: No fuel cell 3? 
    GrandPrix Junkie Sabrewings's Avatar
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    I get fuel cell 2 and 1 easily enough. 2 comes in with very light throttle (cruising), 1 for decel, and 4 comes in with moderate acceleration (over 5-6% TP) all the way to WOT. Never a cell 3. I do have PE as my LTFTs and STFTs go to 0 right at 30% TP just like the bin file is set.

    I searched on the Powrtuner forums and found some posts that at some point it would seem that cell 3 became exclusive to boosted applications. A SS M90 kit member who still has the L36 MAP says he has never seen cell 3 on his car (2002 Imp LS). Nor on any other L36 that he has gotten his hands on.

    So, it would seem that it is normal.
    2004 Impala LS - got some mods sold!!!
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  5. #5 Re: No fuel cell 3? 
    GTX Level Member Andrew_99GTP's Avatar
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    Kind of what I thought but I had never heard of it until now. Does the car seem to run fine otherwise?


    BTW any plans to go with some sort of forced induction setup?
    Red 2dr 99 GTP"Old" Z7 t66, A/A IC'd, Custom Heads, 65# Inj, ST2 Cam, Meziere Elec Pump, JP Double Roller(with machined crank gear), Plogs, PLX W/B, Powrtuner SOLD

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  6. #6 Re: No fuel cell 3? 
    GrandPrix Junkie Sabrewings's Avatar
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    Quote Originally Posted by Andrew_99GTP View Post
    Kind of what I thought but I had never heard of it until now. Does the car seem to run fine otherwise?
    Well, I still have a mostly stock tune with transmission modifications. It doesn't have problem running, but it needs some tweaking.


    Quote Originally Posted by Andrew_99GTP View Post
    BTW any plans to go with some sort of forced induction setup?
    Not for the time being. I decided to shelve the top-swap idea for a while.
    2004 Impala LS - got some mods sold!!!
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