No minor thing you can do will really increase H.P. to any significant degree. Installing a supercharger would give you a significant increase.
vacuum leak
Oldsmobile didn't make a Cutlass Supreme in 1998
Could be a bad ignition coil, a bad ignition module, or bad gaskets on the manifold(s). I'm assuming you've already replaced the plugs and wires or they're fairly new.
How to change a timing chain in a 1998 Oldsmobile delta 88
The 3.4 liter V6 engine in a 1998 Oldsmobile Silhouette has a timing CHAIN
$65.00
how do you get to it
9
Yes
Which engine?
is there a fuel cut off switch in an oldsmobile bravada
R134a