Your location says Ireland, so your rules may be different, but here is a link to the FCC webpage that highlights the law for CB use in the US. There is also a link to the actual verbage of the law on that page.

http://wireless.fcc.gov/services/index.htm?job=operations&id=cb

As John said, your only legal way to make your radio function more efficiently is to work on your antenna and connectors. Find an SWR meter and tune your antenna and conductor while ensuring the maximum ground and antenna exposure.

73
-Jon
KJ6GVM

As seen on Expedition with TX plates: VEGETARIAN - An old Indian word for poor hunter

Grampa's Trooper
1974 FJ40
1987 FJ60