i have a 2006 grand prix 5.3 LS4.
With the articles that i have looked at trying to tune the VE table.
we are to disable the MAF,, copy high ocatane table to low octane table.
enable TPS to 100%
i am not sure if this is normal but shifting during the MAF disabled is very harsh
feels like it slams into gear on part throttle.
any help would be appreciated.