I thought perhaps too small intercooler piping but I'm pretty sure it's 60mm at it's smallest parts in the run so shouldn't be an issue, what else might cause a bit of surge? It's not a massive issue as I'm looking to go full 3" on the exhaust and run less boost but would like to know why.
Read More at : http://www.gtiroc.com/forums/technical-questions-/88509-compressor-surge.html
This video shows what I'm talking about despite the title, https://www.youtube.com/watch?feature=player_detailpage&v=_K0LFadOKBc#t=51
Last edited by grim_d on 27th February 2015, 4:15 pm; edited 1 time in total