Ok, so a few weeks ago i finaly put in my wasso plenum and also changed my air filter as it wasnt in good condition. So from starting it up i get a much louder noise but about 20secs later it idles much lower noise as before.
Next when i use to switch down gears a got a very nice loud gurgle noise but now its a much quiter noise and passengers have noticed this the most.
When i just rev the car its much louder and also when driving and it goes past 3000rpm the exhaust is much louder but below that the car sound normal and not the drone noise it use to have.
Final point is when i change gears ita a hell of a lot smoother and sometimes when in 1st and not putting much acceleration it use to chug a little its now gone.
So are all these points normal after fitting a spacer?