Gary Anderson

Hi guys needing some advice on what this could be I will also post the spec of the car in the post along with as much as I know as I haven’t owned the car more than a week.ok so bought this car a few nights ago knowing there was a issuewith the gearbox 5th gear is knackered(you need to hold it in place or it crunches) but the guy gave me a spare gearbox and told me the one on it was a lsd box.anyway so after having the new fuel line fixed from sos motorsport in Falkirk as it spilt as I was coming home from buying the car I noticed something strange while on boostso what seemsto be happening once I am around 4/5k rpm on full boost it feels like the boost is on one min then off then back on again consistently I amNot getting a smooth progressive delivery off power and I have even tried this with changing the settings on the apexi avcr to a/b still the same could anyone point me in the right direction to what it could be?On the attach ment it has the spec list of the car