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Thread: 2015 c7

  1. #1
    Advanced Tuner
    Join Date
    Mar 2008
    Posts
    211

    2015 c7

    I have tuned 3 manual C7s and this is my first auto.
    Can you tell me why I am getting KR, happens at the same spot everytime.
    Stock and modded, makes no difference.
    Can you tell me what I maybe missing?
    Attached Files Attached Files
    2002 6.6 TR6060 ZO6 (520Whp)
    2014 Audi S7 (730whp)

  2. #2
    Tuner in Training
    Join Date
    Aug 2016
    Posts
    12
    I had a similar issue with my boosted C7 in the 3500-4000 rpm range. I ended up leaning it out a bit in that area on the PE table and the KR cleared up.

  3. #3
    Advanced Tuner lt1z350's Avatar
    Join Date
    Mar 2014
    Location
    Dandridge, TN
    Posts
    560
    sometimes it also uses kr to limit torque rather then just closing the throttle. You got a good channel list so can see all the limiters and making sure not hitting any of them? I have seen 2.5-4 show on my zl1 at times and not pull a single degree of timing out but get a power dip during that point. Not lean not rich not too much timing not too little but very close to driver demand so raised that and went away in next logs.
    First 9 second 6th gen lt4 zl1 stock blower SHC SBE boost only.

    2013 cadillac ats 2.0t Big turbo-gone
    2007 tahoe 5.3 lsa blower on 14 lbs boost 6l80e swap 2009 os
    2017 zl1 a10 big gulp/2 inch headers/ 9.55 lower/ e85/bigger hx /103mm tb / Synergy trunk tank and underhood kit/methanol injection with torqbyte controller and prometh pump / Jokerz performance R&D ported stock blower/ lme cnc heads /GP tuning custom cam. So far 9.30@150