I just bought a set of your ultra high ratio roller rockers an I've installed them as instructed by the person from whom I bought them. Now my car has no compression so can you please help me out and point me in the right direction?

When you purchased our roller rockers to suit your ecotec, did they come with modified rocker pedestals/plates? By the sounds of things they didn't and you may have been supplied standard ones instead, which while will fit, won't work. This is because the new location of the pushrod cup, with the standard rocker pedestals, causes the pushrod to become pinched up against the pedestal preventing the valves to close. You either modify your current pedestals such that they have sufficient clearance, or we can supply you with a pair to suit.