So you have a TRD level 2 cam...
Leave it alone.
Only problem might be passing smog tests (not that they'd know it was a different cam).
You might want to adjust the airflow meter........
start here:
http://board.marlincrawler.com/index.php?topic=5446.0
It passed smog with the cam in before so I don't think it's emissions much. Adjusted the air flow meter right after I swapped it over to efi. not sure if it helped much, but i backed it off three teeth.
