Will a downpipe from any of the other THP brethren..

[D'Marco]

... fit as a direct bolt on to a 2011 THP 155?

[Chris_Blue]

I would gues that would depend on whether the remaining sections of the exhaust are the same (Length, bore etc etc)

[D'Marco]

I think they're the same. I've watched vids of various decats being fitted to the various THP engines. I decided to go for one specifically for the DS3 though just in case lol