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Type: Posts; User: helo

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  1. Replies
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    HEI ICM is supposedly prone to (permanent)...

    HEI ICM is supposedly prone to (permanent) failure from ground faults. Heat would be the other concern, with deteriorated heat sink grease being the primary cause.. Kind of a hack-job commitment to...
  2. True. You can adjust a few 7427 tranny tables and...

    True. You can adjust a few 7427 tranny tables and constants to soften TCC application for the kevlar clutches if it's a problem (mostly if you play with 2nd gear lockup, in my experience).


    ...
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    They're solid state, nothing is going to vibrate....

    They're solid state, nothing is going to vibrate. You're overthinking it =).

    I read somewhere on TGO that certain TPI cars (maybe certain year vettes?) got water resistant OBD-I PCMs in the engine...
  4. no idea on 7060 specifically, but if I'm not...

    no idea on 7060 specifically, but if I'm not mistaken, linear EGR didn't come about until after the 7060's time?

    It would have to support linear egr read-in and not just a simple on/off vacuum...
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    REALLY check your 5v wires? 7427/8625 pins A14,...

    REALLY check your 5v wires? 7427/8625 pins A14, B2, E14, F9, F14 (others??)

    5v is used for TPS & map (duh), but also for OBD and ICM !!!!




    Hmm? More important, the ICM __MUST__ have...
  6. Aren't you going to use a TBI drac? Speedo gets...

    Aren't you going to use a TBI drac? Speedo gets 4k (right??). PCM gets 2k to F13 and 4k to F12 (tranny speed). I honestly have no idea why GM felt they needed to feed the tranny code a 4k signal,...
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    I've had 10* in BOTH directions...

    I've had 10* in BOTH directions unexpectedly/unintentionally. Source was things like altitude compensation bias, EGR bias, main bias. I'm certain it was merely an XDF issue or something when I saved...
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    Nasty-Z, what have you modified in your 454 tune...

    Nasty-Z, what have you modified in your 454 tune from the stock 454 calibration? (and, which "stock" calibration did you start with??) I might take a look at a $0E hack I have somewhere (needs to...
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    Funny how many sop44 chips are on ebay all of a...

    Funny how many sop44 chips are on ebay all of a sudden... I couldn't find ANY only a month ago.

    A bare psop44 socket P/N: OTS-44-1.27-03
    (available on ebay 15pc/$135)

    Here's a badazz ZIF for a...
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    Have you come across the code I wrote? (posted...

    Have you come across the code I wrote? (posted up on FSC)

    Dual-Speed E-Fan code $0d <-- I have formatted/commented text file, just not posted (yet)

    It's dual-fan _OR_ dual-speed code for...
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    Easy to make a 5.7 auto bin a 5.7 manual.. I...

    Easy to make a 5.7 auto bin a 5.7 manual.. I think it's just one flag to uncheck, maybe 2 =). Definitely start with a common 350 bin.

    When I started with my vortec motor, I think I was increasing...
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    "can" is a far cry from "will," so exactly what...

    "can" is a far cry from "will," so exactly what do you mean? I suspect we all grasp the concept, there are plenty of descriptions of 'what needs to be done' floating around. There is a guy on...
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    I hope you're right about the gap issue being a...

    I hope you're right about the gap issue being a myth, but I think I'll start carrying spare ignition parts =). I'm up to 39* advance with EGR, hitting 41* yielded sporatic pinging (engine felt good...
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    Base timing for TBI-HEI with .060 spark plugs

    With my tune, I never drop below 20* spark advance. Would it make sense to rotate my dizzy to, say, 10-15* base timing in order to align the cap&rotor more closely when PCM fires the coil?

    What...
  15. Coolest thing I've done with my 4l80e is enable...

    Coolest thing I've done with my 4l80e is enable 2nd gear TCC lockup. It's freaking sweet. It really shines when pulling hard up a hill in D2, esp if towing...

    You have to find all of the relevant...
  16. Thread: EGR Tuning

    by helo
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    post #4 is very true; I'll attest to EGR on my...

    post #4 is very true; I'll attest to EGR on my TBI-L31 (it's worth using). Hard to say mileage increase is "substantial" or even real, but I'd say it's totally plausible. My motor pulls way harder...
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    Tunercat/CATS would be perfect, and I would...

    Tunercat/CATS would be perfect, and I would totally go down that road... if it were 1/10th the current price without silly licensing.

    The chips futurelec has are 48 pin tsop 90ns (wrong packaging...
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    Doober, that's easy without boost. I have posts...

    Doober, that's easy without boost. I have posts over at FSC with hex patches and whatnot for $0d. I've run a '01+ eccc 4l80e for some time now on the 8625. 8625 is a 7427 with TIS inputs, but the...
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    I think we must have wildly differing definitions...

    I think we must have wildly differing definitions of "fairly common." The real problem in my mind is still getting a replacement chip. Show me a 'add to cart' page from a reputable company...
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