timing retard in anticipation of a fuel change how to get rid of it

[nitrouspaul]

like the title says i an getting retard everytime i lean into the throttle in the upper rpm ranges 3800plus

I have increased knock level tip in tps a bit seems to help and increased values in burst knock bbut its still not gone, anyone?
thanks in advance

[WS6FirebirdTA00]

Getting timing retard or knock retard?

Logs and tunes help a ton in trying to troubleshoot.

Sounds like burst knock to me. Zero it out and see how it does (the timing not the g/cyl delta).

[nitrouspaul]

sorry should have been more specific

it is knock retard
was wondering if a momentary over rich condition can cause it as well

[nitrouspaul]

here is log or at least one of them

[WS6FirebirdTA00]

You are maxing out the KR any time you enter PE, check for KS codes. You probably need to replace a sensor, harness, check the connection or a combination of these.

[jimmyblue]

First thing to look at is, is your AFR dipping right before
knock detect, and following tip-in.

If so, the first suspect is the VE table at about that
point. You step into SD mode on unsteady MAP, and
if it's well leaner than MAF mode there's your transient
ping.

[nitrouspaul]

file

[nitrouspaul]

ws6 I used to have ks code low signal input bank 2 but i adjusted sensitivity a bit and they went away

[nitrouspaul]

jimmy blue when i tuned the ve and maf are both within 2 of each other this took me most of august to do but i got it there

[nitrouspaul]

jimmy as well you may be onto something because i have other scans where i use about 50% throttle to redline and keep it smooth and i get no kr. so maybe this unsteady map state is a place to look any idears on a start proceedure

[nitrouspaul]

jimmy i see you are in cocoa florida and i will be passing by late next month is this the same as a beach and how well did the beach fair with hurricane sandy i love ronjons