i built a ls vtec for a kid and now that its back from tunning its not running correctly. once in vtec it spits and spudders not to where you can feel it but you can hear it. and the car has no *****. the set up does have compression problems because the head i was sent had bent valves and the machine shop didnt do a good job of fixxing it. aney ideas? i was thinking only one bank of cams was kicking in or somthing?

 

do a CR test

 

one cylinder is low from the machine shop mistakes its 180 all across and 120 on cyl 3