landrover6x6 Active Member Jul 15, 2012 #1 HI, can anyone through any light on 3.5 twin down pipe manifolds compared to 3.9 twin down pipe manifolds off a range or disco. Do the 3.9 ones flow better or are they the same.
HI, can anyone through any light on 3.5 twin down pipe manifolds compared to 3.9 twin down pipe manifolds off a range or disco. Do the 3.9 ones flow better or are they the same.
fanatic RESPECT IS EARNED, BEATINGS ARE FREE ;-) Forum Sponsor Jul 15, 2012 #2 3.9 are said to breath better as an upgrade on 3.5- haven't tried myself
landrover6x6 Active Member Jul 15, 2012 #3 Thats what ive been told but nobody seems to know for sure
