Firstfives.org

Hi to every one .I just got my first BMW e12 528i 1980. 100.000 miles
I in joying driving. But i still don filling 170 hp ...
I done good tune up:
new plugs wires,
new plugs (bosh)
new oil and air filters
check timing look ok but still lock of power think i getting 80 or 90 hp
any help i will be ...