Exhaust upgrade-MOT emmisions

[Mike HSV]

Hi guys, have any of you HSV owners had any probs with MOT emmisions after having exhaust mods done(headers,new cats+cat back). If so do you have to go to the effort of changing the system back to original every year??
I know this not relevent to a lot of you guys with newer cars but my poor beast has been having MOTs for 5 years and up until this year has breezed it with the standard pipe, im a bit worried for next time!

Mike

[Mike HSV]

Thanks guys. Should be up to see you later Brian, all being well.

Mike