ok so i just had a new headgasket installed and put new ARP head bolts and got it all together and it runs ok... like it's starts fine and idles fantastic better than it has ever idled but it seems there's not much power like i can't go up a slight incline at 50 mph in 5th without having to Nail it or down shift... What could be the problem? could it be the o2 sensor? could it be ruined from the BHG? I'm pretty sure it's timing related... it's not doing this anymore well atleast i haven't noticed yet but when i went to pick the car up tonight right when i started it up and rev it a few times it died.. then it was really hard to start like it sounded so close to firing right up but wouldn't i had to pump the gas ALOT to get it to finally start up again. Also would there be any reason why the intake is a whole lot louder now?