1.if i get a de-cat will this make my exhaust louder as it is quite quiet?
2.will i need to map my car once fitted
3.will i need to remove all 3 or only the 1 just after the turbo
4.will it be ok to remove the lamba
5.will this make the car do the odd pop?

thanks i realy want to make it a bit louder and pop now and again but dont want to have to map it as i havent got the funds at the min cheers

 

1. yes it will be much much louder
2. depends on age of car and which cats you remove
3. up to you
4. don't know
5. a bit, combined with a dump vlave much more, then if remapped the mapper can add even more in