E39 540i manual

steph1211, Aug 6, 5:16am
just brought a nice e39 anybody know if you can buy performance chips for them! and other ways to increase HP. has exhaust done already.
cheers

jason_247, Aug 6, 6:17am
have a look around online

not a huge amount to do power wise other than a supercharger
there was a thread on an american forum testing chips
9/10 lost power over factory and the other gained 3 hp

if exhaust is done leave the engine
a pod filter will sound stupid

give the engine a good deal of maintanance to gain lost power

new oil in g/box and diff

from there take a good look at options regarding suspension, a real soft point on older e39s

new arm bushes for the front, subframe bushes in the rear etc

after that track down an m5 rear sway bar, dramatically improves handling