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Thread: KR after Full Flash new OS...

  1. #11
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    No wideband yet :( I need to stop being lazy and spring for one but I have to take time to research which i should pick up. I see what youre saying but I dont THINK PE would make a difference here. Since PE is based on throttle position and a few other perameters that im not even hitting!!! This is happening at like 20% throttle Im not sure of anyone that uses PE mode at that early on in the throttle position...kinda defeats the whole Stoich. My PE mode under normal circumstances when its not turned off, is on at 60% + throttle position. You should be able to run Stoich in all ranges safely if youre not hammering on it and have the correct timing and VE set up...Ive had this same spark timing/ PE tunning Technique for 4 PCM's but NEVER with this OS...This is the first time I've ever seen KR with this motor and tune style. I think there is a difference in the knock sensor settings vs my old OS...but im guessing if the sensitivity has been set this way from factory on this OS then i will tune based off of its sensitvity because it is probably more accurate, or simply safer!!

    EDIT: Im looking at my old OS vs new OS... there is clearly a huge difference in the older Knock settings vs the new one...Just about every knock setting is different and some by a fairly large amount. The sensitivity is definitely higher on the new OS, Ill just re-tune accordingly
    Last edited by 01Blackerado; March 18th, 2011 at 02:49 AM.
    01 Silverado ECSB:
    6.2L 383 Stroker IB (6.125 Rods, 4" Lunati Forged Crank, 3.903 Bore -30 cc Lunati Forged Pistons, 222/219 .550 .547 116LSA Reverse split cam, double roller timing chain, hydraulic roller lifters, TEA port n polished heads, 7.400" Pushrods, ARP Bolts everywhere), 65lbs Injectors, ASP Underdrive pulley, 160* TStat, Dynatech LT's w/ Catted Y, Gibson cat back, K&N Cold Air intake, Flex a Lite Fans, 34" radiator, EFiLive Tune

  2. #12
    Joe (Moderator) joecar's Avatar
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    Copy your old knock settings.

  3. #13
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    Joe, are you sure? I will if you recommend it but I was going to avoid it
    01 Silverado ECSB:
    6.2L 383 Stroker IB (6.125 Rods, 4" Lunati Forged Crank, 3.903 Bore -30 cc Lunati Forged Pistons, 222/219 .550 .547 116LSA Reverse split cam, double roller timing chain, hydraulic roller lifters, TEA port n polished heads, 7.400" Pushrods, ARP Bolts everywhere), 65lbs Injectors, ASP Underdrive pulley, 160* TStat, Dynatech LT's w/ Catted Y, Gibson cat back, K&N Cold Air intake, Flex a Lite Fans, 34" radiator, EFiLive Tune

  4. #14
    R.I.P Shawn, 1956-2011 WeathermanShawn's Avatar
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    Blackerado, I'm aware on that log you are keeping out of the throttle. But even at lower TPS, you are hitting >90 Kpa and you are hitting .76 g/cyl. My main point was that its is not necessary to tune that way if you have a wideband. But its true you would not have been in PE Mode anyway and your KR is at lower throttle.

    The other option is to alter B6207. I have mine set at .25. That way you can avoid altering your knock sensitivity features, but just speed up the KR recovery. Sounds like you have already discovered that in SD Mode you are operating off your Low-Octane Spark and you lose the Adaptive Spark feature.

    A wideband is a good investment, but sounds like you already know that...

    Good luck.
    2002 Black Camaro Z-28 M6 Hardtop 11.0:1CR 425HP/410TQ SAE (400TQ@3500RPM)
    200cc Heads, 228/232 110+2 Cam, 1 3/4" LT's w/catts, GMMG, Koni Shocks, Hotchkis Springs, 35/21 Sways, 17" ZR1's, 3.90 Gears Roadrunner PCM LM-2 Serial Wideband
    EFILive Closed-Loop MAF/SD Hybrid Tune..


  5. #15
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    Thank you, I appreciate all your insight and help!! Wideband is defniitely my next pick up
    01 Silverado ECSB:
    6.2L 383 Stroker IB (6.125 Rods, 4" Lunati Forged Crank, 3.903 Bore -30 cc Lunati Forged Pistons, 222/219 .550 .547 116LSA Reverse split cam, double roller timing chain, hydraulic roller lifters, TEA port n polished heads, 7.400" Pushrods, ARP Bolts everywhere), 65lbs Injectors, ASP Underdrive pulley, 160* TStat, Dynatech LT's w/ Catted Y, Gibson cat back, K&N Cold Air intake, Flex a Lite Fans, 34" radiator, EFiLive Tune

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