Thread: Seeing some medium load KR

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  1. #1 Seeing some medium load KR 
    GTP Level Member 97AutoXVette's Avatar
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    With the aeroforce installed, I now notice that at medium engine loads (roughly 50% throttle or so), I can see blips of KR up to ~2 or 3 degrees. This goes away to 0*KR then all the way up through shifting as I lay into the throttle more going to WOT. The fact that I get some mid-throttle KR but none at WOT even up past 5500rpm seems a bit odd to me. At first I thought it was false KR due to downshifting perhaps, but now I realize I notice it on occasion just gradually getting into the throttle. Again, the motor is nowhere near building full boost when this KR is seen. I also have poly upper motor mounts (and all the other mods in the sig).

    Let me know what you think! Anyone had this particular issue before?

    Edit: Note that my AFRs become "enriched" just before I get into any boost so I think we can eliminate an early boost lean condition as a potential root cause
    1998 GTP sedan: sold, 1999 GTP coupe #1: sold, 1999 GTP coupe #2 on E85: totalled
    2002 GTP sedan:
    3" downpipe|PLOG|poly mts|160 T*|60# Injectors|ZZP Intake|1.8 YT RRs|Ported Gen3|Ported ZZP S2 TB|E85|FP rewire|ZZP FSIC|WP UD Pulley|2.8 MPS|HP-Tuners
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  2. #2 Re: Seeing some medium load KR 
    GXP Level Member darkhorizon's Avatar
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    Too rich can cause knock.. try taking some out of the first few time rows in pe vs time vs rpm
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  3. #3 Re: Seeing some medium load KR 
    GTP Level Member 97AutoXVette's Avatar
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    Good call. I am definitely on the rich side. I'll take some gruel out of those throttle positions
    1998 GTP sedan: sold, 1999 GTP coupe #1: sold, 1999 GTP coupe #2 on E85: totalled
    2002 GTP sedan:
    3" downpipe|PLOG|poly mts|160 T*|60# Injectors|ZZP Intake|1.8 YT RRs|Ported Gen3|Ported ZZP S2 TB|E85|FP rewire|ZZP FSIC|WP UD Pulley|2.8 MPS|HP-Tuners
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