when i start the car it wont idle right........like if its blown..but when it heats up like 10 seconds later it perfect......if i rev it up a little (3k) when i strt it it will idle up (iac valve) and then it will drop to 900 at full temp......anyone know what it could be??..i changed plugs....its on 100 octane/and its tuned.......
my guess is thatpiston-wall clearance isnt too tight and it leacs compression at first until the pistons expand to fill up the gaps.........what do u guys think?