So I got the s14 on the road with stock boost and now & then when it got hot it would get to around 5700/6k revs then buck like fuel cut or a boost pipe popping off.
I have tubbed arches and the trunk is a little kinked so I lifted it up and from then on it's been fine till tonight.
I fitted a manual boost controller and it's seems to boost to 10psi then drop off to about 5psi and when it got really hot it started doing the bucking act again.
Would this be the trunk collapsing again with upped boost???
I can't straighten the trunk much more and it has a slight bend/pinch where I had to bend the hose under the hotpipe