EGR blanked off now would there be any gain from striping the cat out or can i get a de cat pipe? different exhaust? would a remap improve power delivery? or tuning box? i did de egr and de cat a landy 300 TDI this made it pull like a train, however doing it to stilo i cant really tell the difference as egr was stuck when i got the cart. also should airbag modules be replaced after 10 years? AND radio reception is crap new aerial or replace cable or both?