Engine Lacks Power N E suggestions??

i recently bought the car with the timming belt gone on it....i had the head rebuilt n all 16 valves replaced alond wit a new timming belt....my car when driving doesnt seem to pick up my top speed is about 40 km/h.....mechanic that did my head said my turbo was fine...only thing i can think of is valve leaks...ne other suggestions

boost leak... go to www.vfaq.com (http://www.vfaq.com/) and make yourself a boost leak tester!

stick or auto?
if its stick you can ignore the rest of this. when the transmission computer goes in the autos it locks it into reverse and 2nd gear so that would make it not have good pickup or top end. do you feel it shift when you drive?

even with no boost he should be able to go faster then 40k shouldnt he?

possibly... does the car shudder, stumble, or feel like its not running right? what all does it do when it gets to 40km/h?

possibly... does the car shudder, stumble, or feel like its not running right? what all does it do when it gets to 40km/h?

the car is automatic......the car does go past 40km/h but very slowly...its like starting off in a manual car at 3rd gear instead of 1st....my ECO or power economy switch is disconnected i read into this and learned that the eco switct changes the shift points the tranny uses...im thinking its not doin this b/c its not connected....thats my only theory...ne1 know where i can buy or get an eco switch im having trouble finding one

sounds like a nasty boost leak if ya ask me. those guys at the mechanics said the turbo AND the pipes were ok?