Originally Posted by botters

they blow welds for fun and dont have equal airflow to all 4 cylinders (much like a standard plenum lol) if you want to upgrade get a small turbo escort plenum or a hart plenum if you really want to go for it, allthough if your not planning on 500+ bhp then stick with the 4x4 plenum you have and spend your money on something else

Originally Posted by Chip

Agreed on the escort plenum being the ultimate for upto about 500bhp