TODA + oem retainers. Swapped to bc retainers. Frankly i don't think they make a difference, just a requirement to avoid valve float with performance. Cams.
im just fitting turbine RHB52 IHI legacy into my GTti. but the back housing im still using GTti. is it ok? im just worried there will be a big lagging if i install the back housing of that turbine too. anyone who hv...