Can someone please help regarding RPI Air intake!?
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Joined: Dec 2008
Posts: 727
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From: Bournemouth, UK
My Ride: Late 2005 M5 in Silverstone Metallic II with Full Black Leather Interior. SMG, LOGIC7, Heated Front Seats, Rear Electric Sun Blind, Comms Package, Professional Nav, TV Function, Extended Voice Control, Adaptive Headlights
Just wanted to get an as in depth as possible explanation on how the RPI air scoops and back off plates and air filter change works? And which parts i need to get the best performance out of my car?
Thanks in advance!
Thanks in advance!
"RPi's ram air block off plates are used in conjunction with our Ram Air kit. The plates partially block off the bottom secondary hole of the intake box. This allows for quicker pressurization of the intake system. Dyno tests have shown a 4-6whp gain in the midrange."
"RPi's Ram Air Scoops converts your factory intake system into a ram air type. Other aftermarket induction kits mostly suck in hot air causing a loss of performance. The use of heatshields are not very affective as heat shields mainly work to block radiant heat. Utilizing the stock intake boxes, expect a 10-15whp gain with 70mph airflow. RPi's Ram Air systems have been dyno proven as well as track proven and come with a 30-day money back guarantee. Ram Air Intake Kits include a high performance BMC air filter."
pretty much if you look through the kidney grills in the front, toward the side at a 90 degree angle on both side of your M5 youll see an outlet/tunnel and they lead directly into the stock air boxes. instead of having whatever amount of air that goes through the kidney grills that finds its way to those outlets, the scoop directs about almost 1/2 of the air going through each kidney grill into those outlets on the M5 right into the air boxes. the BMC air filters allow more air to travel more freely compared to the stock paper filters.
"RPi's Ram Air Scoops converts your factory intake system into a ram air type. Other aftermarket induction kits mostly suck in hot air causing a loss of performance. The use of heatshields are not very affective as heat shields mainly work to block radiant heat. Utilizing the stock intake boxes, expect a 10-15whp gain with 70mph airflow. RPi's Ram Air systems have been dyno proven as well as track proven and come with a 30-day money back guarantee. Ram Air Intake Kits include a high performance BMC air filter."
pretty much if you look through the kidney grills in the front, toward the side at a 90 degree angle on both side of your M5 youll see an outlet/tunnel and they lead directly into the stock air boxes. instead of having whatever amount of air that goes through the kidney grills that finds its way to those outlets, the scoop directs about almost 1/2 of the air going through each kidney grill into those outlets on the M5 right into the air boxes. the BMC air filters allow more air to travel more freely compared to the stock paper filters.
Thread Starter
Senior Members
Joined: Dec 2008
Posts: 727
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From: Bournemouth, UK
My Ride: Late 2005 M5 in Silverstone Metallic II with Full Black Leather Interior. SMG, LOGIC7, Heated Front Seats, Rear Electric Sun Blind, Comms Package, Professional Nav, TV Function, Extended Voice Control, Adaptive Headlights
Nice one. Thanks Nerwyll for that informative response! Can you PM me with the details of which parts i need to get the best response and power gain, and prices? Thanks in advance bud.
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Joined: Feb 2006
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From: NY
My Ride: 2008 Silverstone II E60 M5 2012 E70 AW X5 50i Sport w/ LCI Aero Kit and Rocker Panels
Best bang for your buck, Jon. I would also suggest doing the RPI Pulleys too. They're fairly cheap and make a very noticeable difference.
You will notice a significant difference in the car immediately!
- Scoops
- Block-Off Plates
- BMC Filters
- Pulleys
You will notice a significant difference in the car immediately!
Thread Starter
Senior Members
Joined: Dec 2008
Posts: 727
Likes: 0
From: Bournemouth, UK
My Ride: Late 2005 M5 in Silverstone Metallic II with Full Black Leather Interior. SMG, LOGIC7, Heated Front Seats, Rear Electric Sun Blind, Comms Package, Professional Nav, TV Function, Extended Voice Control, Adaptive Headlights
Ok guys. Thanks. I am going to follow your advice. I'll be in touch in the New Year Nerwyll!
Originally Posted by Jon M5' post='752567' date='Dec 25 2008, 04:11 AM
Ok guys. Thanks. I am going to follow your advice. I'll be in touch in the New Year Nerwyll! 

RPI scoops, fitlers, block off plates and pulleys are a must for a M5. I was just at RPI on the 22nd and they were performing a dyno on a '06 M5 with the exact mods mentioned. The dyno came out at 490.5 HP to the wheel!


