Do I have to tune a b16 si with only 5psi of boost?

 

always tune your car once you start to mod it. It will make more power and run safer

 

i have a D15B7 SOHC Turbo i have been running 8 psi for about 2 years no problems just small ones and i only have a wideband tune and ECU is chipped with Chrome and runs great.... a little lag on second gear but i heard it was normal cause of the turbo