Curious:
Pontiac G8 was professionally tuned for added LSA supercharger (running stock pulleys) last summer. Ran great no complaints.
Now thinking of maybe installing 2.55 upper (likely nothing else except maybe larger intercooler rad-not the brick)),
At the time of my first tune- tuner quoted me about 100-150 to re modify tune if i changed pulley in future. I realize its not much $$ but what exactly is modified in tune when increasing boost from pulley ratio change?
it now runs a blended tune.
its only really under power enrichment right? as not much to do with volumetric efficiency tables as bypass plate in blower is open when not under power enrichment.
Any info is welcome