performance mods
Former Vendor
Joined: Oct 2006
Posts: 19,460
Likes: 0
From: Anaheim, CA
My Ride: F13 M6
the only thing is with the sprintbooster, there is no actual gain in power as it only increases throttle response by anticipating the opening of the throttle body. for the RPI products, we're direct with RPI and also have the scoops in stock 
Former Vendor
Joined: Apr 2008
Posts: 5,051
Likes: 1
From: SoCal
My Ride: 14 550i
Contributors
Joined: Aug 2008
Posts: 9,986
Likes: 1
From: Zoo York
My Ride: Alpine White 2006 530Xi (SLD)
You need:
- Sprint Booster (Highly recommend!)
- Dual Intake DINAN (Either original DINAN or DIY DINAN Replica)
- RPI Scoops and Air Filter
- Exhaust System Free-Flow (RPI or custom: https://5series.net/forums/topic/985...5i%20magnaflow)
- ECU Remap
- Sprint Booster (Highly recommend!)
- Dual Intake DINAN (Either original DINAN or DIY DINAN Replica)
- RPI Scoops and Air Filter
- Exhaust System Free-Flow (RPI or custom: https://5series.net/forums/topic/985...5i%20magnaflow)
- ECU Remap
Contributors
Joined: Aug 2005
Posts: 11,432
Likes: 1
From: San Jose, CA
My Ride: E60 M5, F85 X5M
That's what I did a few years ago and never looked back. 
Basically restating what others have said but here's what's available as bolt-ons for the 545:
1) Sprint Booster: Takes away the throttle lag associated with drive-by-wire cars and significantly increases throttle response. No power gains.
2) Intake: RPI scoops or RPI scoops in conjunction with Dinan intakes
3) Dinan throttle body
4) Exhaust: RPI seems to have been the best option with proven performance and great value for your dollar
5) ECU tune: Plenty of tuners out there and will increase throttle response, raise rev limiter, remove speed limiter, small gain in hp/tq
6) Dinan or similar differential since you have the SMG
And on the far side of the spectrum:
1) NOS
2) Stroker engine like RDSport
3) Supercharger (haven't seen any kits released yet though)
Basically restating what others have said but here's what's available as bolt-ons for the 545:
1) Sprint Booster: Takes away the throttle lag associated with drive-by-wire cars and significantly increases throttle response. No power gains.
2) Intake: RPI scoops or RPI scoops in conjunction with Dinan intakes
3) Dinan throttle body
4) Exhaust: RPI seems to have been the best option with proven performance and great value for your dollar
5) ECU tune: Plenty of tuners out there and will increase throttle response, raise rev limiter, remove speed limiter, small gain in hp/tq
6) Dinan or similar differential since you have the SMG
And on the far side of the spectrum:
1) NOS
2) Stroker engine like RDSport
3) Supercharger (haven't seen any kits released yet though)
Members
Joined: Nov 2007
Posts: 178
Likes: 0
From: Houston, TX
My Ride: 07 550i Titanium Silver, Black Dakota Leather, Steptronic, Sport, Premium, Nav, Sat. Radio, Logic 7, Comfort Access, Rear Sunshade.
That's what I did a few years ago and never looked back.
Basically restating what others have said but here's what's available as bolt-ons for the 545:
1) Sprint Booster: Takes away the throttle lag associated with drive-by-wire cars and significantly increases throttle response. No power gains.
2) Intake: RPI scoops or RPI scoops in conjunction with Dinan intakes
3) Dinan throttle body
4) Exhaust: RPI seems to have been the best option with proven performance and great value for your dollar
5) ECU tune: Plenty of tuners out there and will increase throttle response, raise rev limiter, remove speed limiter, small gain in hp/tq
6) Dinan or similar differential since you have the SMG
And on the far side of the spectrum:
1) NOS
2) Stroker engine like RDSport
3) Supercharger (haven't seen any kits released yet though)
Basically restating what others have said but here's what's available as bolt-ons for the 545:
1) Sprint Booster: Takes away the throttle lag associated with drive-by-wire cars and significantly increases throttle response. No power gains.
2) Intake: RPI scoops or RPI scoops in conjunction with Dinan intakes
3) Dinan throttle body
4) Exhaust: RPI seems to have been the best option with proven performance and great value for your dollar
5) ECU tune: Plenty of tuners out there and will increase throttle response, raise rev limiter, remove speed limiter, small gain in hp/tq
6) Dinan or similar differential since you have the SMG
And on the far side of the spectrum:
1) NOS
2) Stroker engine like RDSport
3) Supercharger (haven't seen any kits released yet though)
Members
Joined: Oct 2009
Posts: 98
Likes: 1
DON'T FORGET TO REMOVE THE FLOORMATS. Also, best way to make car faster is lose weight if you're a fat bastard. This is true. I dropped 25 lbs in a year and I bet I gained a good 5hp. Nothing like being so obsessed with your BMW that you lose weight just to make it quicker.
+1
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