In real world I can't see it will make much difference which one. It will quieten it down a tad probably mainly on idle. Will both see it through an mot? My thinking would be the 100 if it will pass you, 200 won't make much difference though so...
Haven't seen out 2017 yet but had the dates through for Japshow and Japshow Finale so get them in your diaries now!
Japshow - Sun 10th June
Japshow Finale - Sun 23rd Sept
I'll be booking up the clubs attendance early part of next year to secure another good spot. I will make a new thread at that time so this is just for your information.
Hi Mick
I would def get it up on the ramps and check the y piece, they always go! Best thing is to replace with a stainless system from powerflow or similar.