i have a B18a1 that i want to boost... The motor has about 162,357 Miles.. Is it safe to boost about 6psi on it, Tuned with unberdata with 320 injectors? The motor has a small oil leak at the cam seal but im gonna get it replaced.. Before boost im gonna change the Head Gasket and water Pump and Timing Belt. What do you guys think

 

When you change your headgasket, use ARP head studs. Other than that, you should be fine. My motor has more miles than that, I'm running 8.5 psi and putting out 240 whp / 235 ft-lbs.

 

Use larger than 320cc injectors.

 

320cc isnt enough for 6psi?