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15 Paxton Knock Activity

Discussion in '5.0L Coyote V8 Engine Modification/Discussion' started by Whiteknight500, Jul 26, 2018.

  1. Whiteknight500

    Whiteknight500 New Member Established Member

    May 20, 2015
    So, everything has been solid on my tune thus far. Wanted to get some input from you guys.

    I havent seen knock activity on the car as of yet until today.

    Ive got a 15 with a paxton 3.8 pulley on 91, JPC fuel system, with Fore fuel controller. Lund nguage tuned.

    In 6th gear when i accelerate i can see quite a bit of knock +2-7* ive never seen that. I didnt get that in the log though. Log is 4th gear pull 3-7k. Im not seeing much knock at WOT but any knock is usually not good. Traditionally ive been -2/3* at WOT.

    Ive attached a log if someone could look at it and tell me what they think.

    Log 42 is today 7/26/2018 4th gear 3-7k
    Log 41 is last friday 3rd 3-7k

    If anyone could help me out, would be wonderful.

    Attached Files:

  2. slow306stang

    slow306stang Well-Known Member Established Member

    Jan 24, 2004
    Delco, Pa
    When running 91 octane there isn't much of a window for tuning. Avoid acceleration in 6th gear and just use it for cruising. The load that an overdrive gear can put on an engine is immense. You have a high compression boosted car using 91 octane so keep that in mind. If you need to accelerate drop it down a gear or two.

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