Thinking bout getting a set of 1.6 rr's....is it worth the money?? How much horse will it give me?? Do i need new valve covers?

 

yes they will improve hp, the amount depends greatly on the amount/type of mods on car. I think you can use the stock valve covers you just have to grind them for clearance in a few places.... someone back me up on that

 

The 1.6's should work without having to grind anything

 

search button works wonders, or even checking out page 2-3 or 4 of this forum and i bet you will find the same topic somewhere and fast