welcome there's nothing wrong with an EG breeze - they're pretty badass for a 1.3L engine, and because Honda make the best gear shift in the business they aren't as slow as you'd imagine.

the reason people say 'do an engine transplant' is because breathing mods such as an intake/full exhaust on your engine will only net you marginal gains. in fact extractors/headers were originally invented for large engines such as V8s, where they do work well and significantly increase volumetric efficiency. they don't make half as much difference on a 4 banger but people (such as myself when i was younger and dumber ) still wack them on those types of engines anyway.

if you feel your car is slow now - it'll feel just as slow after those sorts of modifications, it'll just sound louder and (arguably) better.

if you want a genuine fast-ish car you can take out the 1.3 and put in one of the type-r vtec engines - that's the transplant option. it's not cheap.

one other option out of the box is you could sell the EG and buy a 1.6 EG Si. they're only $1000 more and significantly quicker