1990-95 Nissan 300ZX Twin Turbo

3" Downpipes

Replace your precats with Random Technology 3" stainless steel downpipes and
pick up 1.5 to 2 pounds of boost. Part number 31-130008 (left side) and 31-130009
(right side) include oxygen sensor fittings. Requires converters or off-road pipes with 3" diameter inlet..

On this dyno chart, run number 2 was made with gutted precats and 2-1/2" off-road pipes. Run number 8 was made with Random Technology downpipes and 3" off-road pipes. The gain was 36 horsepower and 25 lbs./ft. of torque.