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  1. #1 Re: PE nuts 
    GrandPrix Junkie Sabrewings's Avatar
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    Quote Originally Posted by TDCRacing View Post
    well someone who knows more about the n/a than me look at his o2's and tell us if they are normal. there in the 800's when he's getting the kr.I think thats lean but im not to sure being it's with the n/a instead of the l67 sc'ed. But just by looking at it you look lean.As said before as soon as your trims lock in at zero you get knock. try adding to the maf table from the p/t-wot section up.
    I wish it was as easy as being lean. I've had my O2s up to 940+ and it only seemed to get worse.

    I'm gonna hold off and see what my try with a completely stock file does tomorrow. Though, more advice is appreciate because once I determine that something in the tune is wrong, I have to be able to fix it.

    Here's my car in detail...

    2004 L36 (Series II/III hybrid)
    67k miles
    3.05 gearing
    Stock TB
    Stock MAF
    WizAired
    Factory plugs/wires (will soon become AL605s and PRJ wires)
    Stock manifolds
    Stock injectors
    ZZP 2.5" DP
    No rear O2 sensor (codes deleted)
    Mandrel 2.5" custom catback

    I guess that's as much info as I can provide. The car doesn't act weird like it's a mechanical issue. Just as soon as PE kicks in it knocks crazy. That leads me to believe its dumping too much fuel because if I was running lean then I'd be knocking before PE, too. Make sense?
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  2. #2 Re: PE nuts 
    TDCRacing
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    Quote Originally Posted by Sabrewings View Post
    Just as soon as PE kicks in it knocks crazy. That leads me to believe its dumping too much fuel because if I was running lean then I'd be knocking before PE, too. Make sense?


    what about running rich before pe ( hence the negative fuel trims) and then running lean as soon as pe kicks in? Thats how i was seeing it. I see that your trims lock in at zero during pe but you could still be lean...i have done a maf tune with trims locking in at 0 also during pe and i can adjust the o2's by the maf table to lean richen the motor with the trims still remaining at 0...just a thought though...i guess i was hoping that during all of my crazy ideas you it might spark the ah-ha! moment in your head lol
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  3. #3 Re: PE nuts 
    TDCRacing
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    what about putting the stock ve table back and just adjusting by the maf table? tried that? it seems like you may have messed something up in your ve table since it seems like that is the only thing that was changed.
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  4. #4 Re: PE nuts 
    GrandPrix Junkie Sabrewings's Avatar
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    Quote Originally Posted by TDCRacing View Post
    what about running rich before pe ( hence the negative fuel trims) and then running lean as soon as pe kicks in? Thats how i was seeing it.
    True, I hadn't thought of it that way.

    Quote Originally Posted by TDCRacing View Post
    i guess i was hoping that during all of my crazy ideas you it might spark the ah-ha! moment in your head lol
    Keep sparking...

    Quote Originally Posted by TDCRacing View Post
    what about putting the stock ve table back and just adjusting by the maf table? tried that? it seems like you may have messed something up in your ve table since it seems like that is the only thing that was changed.
    Well, I was knocking a bit before the VE tune, too. I had thought about this though and that's kinda what I want to test by going back to the stock file. If I can get rid of this problem with that (or, at least make it better) then I'll add stuff back one by one and testing. My VE table would be one of the last things to be added.
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  5. #5 Re: PE nuts 
    TDCRacing
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    Quote Originally Posted by Sabrewings View Post
    True, I hadn't thought of it that way.



    Keep sparking...



    Well, I was knocking a bit before the VE tune, too. I had thought about this though and that's kinda what I want to test by going back to the stock file. If I can get rid of this problem with that (or, at least make it better) then I'll add stuff back one by one and testing. My VE table would be one of the last things to be added.
    yeah i havent messed with the ve table on mine...just the maf...most say all the ve table is used for is in the event of a maf failure...but thats only a matter of opinion...they did some tests on hpt and on some cars it worked and some it dident....what they did was 0 out the ve table and unplug that maf...some cars died and some didnt...i think they then figured out that some cars used the ve table and some didnt...idk
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  6. #6 Re: PE nuts 
    GrandPrix Junkie Sabrewings's Avatar
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    Setting TM back to stock had no effect.

    Here's what happened on my 100% stock file:

    06302008_160907 from sabrewings -- Scan Depot dot net

    Question. I've just been doing partial writes. When I loaded my stock file back, I didn't do anything about the fuel trims either. That shouldn't really make a difference with PE should it?

    What could be causing knock in PE like this??? Something mechanical?
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  7. #7 Re: PE nuts 
    GrandPrix Junkie Sabrewings's Avatar
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    Just a thought... Could this be a bad gas issue? I don't use much fuel. A whole tank will last me three weeks since I work very close to where I live. I recently just refilled from the same gas station (an Exxon) I always gas at. So, if there was something wrong with their 93 I'd be running that fuel for a while.

    I've got a 6 hour drive coming up so I'll be able to clear this tank pretty quickly and get a new tank in Memphis. Following this train of thought (as I was just resting my head on my desk), I remember my friend commenting that my spark advance was awfully low. Could I be running on my bad_fuel_spark table? If my PCM thinks I have bad gas, I probably do...
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  8. #8 Re: PE nuts 
    TDCRacing
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    I always copy my high octane spark table to my low octane just so the timing stays where i put it. imo bad gas could not cause that much kr. this is not directed twards you or anyone on here but why does everyone always talk about bad gas? what is bad gas? Like how is it different from regular gas? I think gas now a days has a pretty high q/a control on it. just my thoghts. i'v never had bad gas to my knowledge. good thinking though...it's probably the smallest that you and everybody else have over looked that is causing all of this lol.
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  9. #9 Re: PE nuts 
    GrandPrix Junkie Sabrewings's Avatar
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    Bad gas doesn't have the octane rating it claims, or it has some sort of contaminant limiting its power. Some bad gas you car can barely run on, other gas causes knock (also known as "hot" gas). Put simply, I can think of no reason mechanically why it should knock like this with the settings all returned to stock.
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