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If you can hear the pinging then you are in trouble, light pinging is impossible to hear from the drivers seat. If you only turn the boost down until you cant hear it then you may still be doing damage.

Get it on a dyno and do a power run. See if its pinging and then reduce the boost a touch until it stops.

If you retard the timing by messing with the crank angle sensor then response will be affected.

There is only 1 solution and that is turn down the boost. Otherwise get a bigger frontmount, bigger turbo so it can push the same amount of air in at a lower temperature and a computer so you can have advanced timing where you need it to maintain response and retard it on boost to avoid ping

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