i have a idle surge that has got me ready to quit. i have know idea whats causing it it will swing from 700 rpms to 1200 rpms in a big annoying loop until it warms up then it only seems to slightly do it.
its a 2008 ly6 6.0 with vvt delete and a girl scout comp cam and springs in a 69 chevy truck.
truck was tuned by a very reputable shop but the truck is running speed density (my choice plan to turbo soon) and it was tuned in the spring when it was colder (35f-50f ) no the days are 75 to 90
ive got my wide band connected and using afr error to try to pull some fuel out of it because its sitting around -10% error in the cells it hits while idling but when i go int the vve table i paste special multiply by percent and then apply coefficients and copy to the other tables the cells change on the table but nothing seems to change on the next log still around -10% error.
do i have my tune set up to even tune in sd correctly? did i forget to change something? will fueling even cause this ?
thank you