E39 528i Performance Chips

Has anyone purchased a performance chip for their 5 series?

Performance Chip Direct suggests gains in MPG and HP.

Any comments would be greatly appreciated.

Thanks

http://www.performancechipsdirect.com/

I'm going to be the first to say it and I will say it politely as others will bombard you with the same answer...use the search function on the forum before posting threads of topics that have been covered a countless amount of times. But in short performance chips don't do much for our cars. Combined with a cold air intake, free flow exhaust and maybe cams then yes it would complete the upgrades as a whole but by itself its not of much help.

A waste of money! Do a search for why.

These have caused controversy but worked for some: performance chips

Do a thread search for "performance" in the bestlinks and these will pop up, among others:
- CAI 101 should I do it or not (1) and which is better, stock or aftermarket cold air intake (1) (2) & a home-made CAI (1) & the general consensus on the effectiveness of an aftermarket CAI versus the stock BMW CAI (1) (2) (3) (4) (5) & how to reduce the risk of hydro lock (1) (2) & what about a K&N oiled air filter over the stock air filter (1) & a forced induction group buy (1) and adding nitrous oxide to your E39 (1) & links to suppliers to improve performance of your E39 (1)

Originally Posted by jammtc

Has anyone purchased a performance chip for their 5 series?

Performance Chip Direct suggests gains in MPG and HP.

Any comments would be greatly appreciated.

Thanks

http://www.performancechipsdirect.com/

Thanks for the input Guys.

It is greatly appreciated.