Hi iv got a r32 skyline running a rb25det, I'm getting what I'm thinking is turbo surge in 3rd gear, starts making a woowoowoo type sound, lol, and feels like I'm hitting a big flat spot ,
This is my setup
Rb25det
Garrett gt3082 ar70 front housing with a 64 rear housing , 20 psi boost
900cc injectors
Walbro 255lph in tank
Fuel pressure regulator
Aftermarket coil packs
External wastegate
Apexi boost controller
Haltech platnuim pro ecu
Making 395 horse atw,
Any info would be great please so I can figure this out