It makes a difference if you have the 4.6is or the 4.8is. The 4.6is has superchargers available which would put a smile on anyone's face.

Otherwise there are numerous available exhaust systems, intake systems and some software. Any BMW guy knows about DINAN, but that is $$$ for their programming. But with DINAN you know what you are getting... not many aftermarket programs are tried and tested to be what they are supposed to be, and I don't believe anyone but DINAN's software will touch the VANOS and valvetronic operation.

__________________
"When you do things right, people won't be sure you've done anything at all" (Bender, futurama)

You make something idiotproof, they'll make a better idiot

You think professional is expensive, just wait until you pay for amateur.

Never let your sense of morals prevent you from doing what is right.

Examine what is said, not who speaks.

X5 pics

RIP 4.6is.....

2003 4.6is