Hello I have just joined the forum so any Advice is helpful, I have just brought a 2003 BA Xr6 turbo lastnight but have been experiencing some form of boost cut, I go to floor and it hits gate, but then it starts make this unearthly spitting & spluttering noise, it boosts casually at 5psi but then spikes majorly to around 10-15psi and that's when the sputtering occurs, I have been told to look at a smaller wastegate spring and also a tune, it did also recently have a front mount intercooler installed so I don't know if that affects it or not, I am not sure on where to go from here so figured I'd come here and ask the pros,
Regards
Cullen_Xr6T