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E60 (2004 - 2010)
BMW 5-Series (E60 chassis) was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E60 is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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  #1  
Old 03-28-2013, 11:00 AM
Slobo7x Slobo7x is offline
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RPi Air Scoop questions

hey, newbie here with some questions/concerns on this mod. It seems from reading online that the RPI hood scoop is rouglhly $95-$99 for E60 550, depending on where you shop. I've read their reviews and descriptions as well as their literature on race precision forums.com, and for some reason i'm skeptical on their "Dyno gains" that they claim.

I realise it's only a $100 but it's stll money. Has anyone ever datalogged the air increase from having this scoop on the car? Any changes in gm/s for MAF reading? They have additional mod on their web site where you have to place duct tape between air scoop and body of the car for addtional 2hp..so it says lmao.

I've looked through all the pictures and i will make my own next week when i have time, I would probably say $10 in parts at home depot, and $4 for a can of flat black spary.

Not trying to start a debate war or anything, just wanted to see if this part is really expensive just cause it's for BMW.

Thanks!
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  #2  
Old 03-28-2013, 11:56 AM
pjinca pjinca is offline
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I just went ahead and got the RPI scoop. I had it on my 530, and having the benefit of knowing the owner of RPI and being able to go to his shop, their testing methods were good. They don't BS dyno numbers, they account for things like temp, wind, etc. Granted, I noticed a larger difference on my 530 @ 70 mph than I do on my 550 @ 70 mph, you can feel the difference. The scoop isn't designed to help 0-60 times, the difference was noticeable when making a pass on the freeway, the car definitely had extra "punch". It also helps when combined with a K&N or the BMC filter.
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  #3  
Old 03-28-2013, 12:15 PM
Slobo7x Slobo7x is offline
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Thank you, i was actually hoping you would reply lol.
Where did you buy your K&N from?
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  #4  
Old 03-28-2013, 12:22 PM
pjinca pjinca is offline
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Quote:
Originally Posted by Slobo7x View Post
Thank you, i was actually hoping you would reply lol.
Where did you buy your K&N from?
LOL, I got it from O'Reilly auto parts actually. Good price, paid $60 for it. I was actually going to go ahead and do the BMC filter this time, but it was out of stock when I got the scoop.
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2005 530i - Prem, Sport, NAV
2006 Jeep SRT-8
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  #5  
Old 03-28-2013, 02:32 PM
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boramkiv boramkiv is offline
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Rpi scoops are sweet. I'm pretty sure you read that post about making it out of tuppaware and bashing Rpi on the price. For me it actually was "only $100"
But it does work, and while many made their own you can't really bash the company for putting out a product. Thing is no one would probably have thought to do it had Rpi not done it themselves. And if $100 is too much, just don't get it. I do like that its a subtle upgrade and that's why I got black on black. I did get a bump in MPG so it's all great. There aren't many engine mods for the N52 as it is, so anything that helps is a good thing.
K&N filter for me with charcoal filter removed and Rpi scoop, with that setup you're smoking M5's all day.



...E28 M5's
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  #6  
Old 03-28-2013, 02:38 PM
pjinca pjinca is offline
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Quote:
Originally Posted by boramkiv View Post
Rpi scoops are sweet. I'm pretty sure you read that post about making it out of tuppaware and bashing Rpi on the price. For me it actually was "only $100"
But it does work, and while many made their own you can't really bash the company for putting out a product. Thing is no one would probably have thought to do it had Rpi not done it themselves. And if $100 is too much, just don't get it. I do like that its a subtle upgrade and that's why I got black on black. I did get a bump in MPG so it's all great. There aren't many engine mods for the N52 as it is, so anything that helps is a good thing.
K&N filter for me with charcoal filter removed and Rpi scoop, with that setup you're smoking M5's all day.



...E28 M5's
E28 M5's FTW!!!!

I agree, can you make it yourself? Sure. Will it work the same? Probably not. I saw some of the many prototypes RPI had on hand, they tested a variety of shapes to come up with the one that would force the most amount of air into the intake possible. It is a good quality piece made of aluminum, so yep, it's $100, but it's a BMW and this is one of the cheapest possible mods you can do.
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Previous 3 cars (the 550 is my 38th car):
2005 530i - Prem, Sport, NAV
2006 Jeep SRT-8
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  #7  
Old 03-28-2013, 02:39 PM
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champaign777 champaign777 is offline
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Quote:
Originally Posted by Slobo7x View Post

I've looked through all the pictures and i will make my own next week when i have time, I would probably say $10 in parts at home depot, and $4 for a can of flat black spary.

Thanks!
exactly


and please dont buy K&N
I killed my MAF using it on my E39 , google it
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Last edited by champaign777; 03-28-2013 at 02:43 PM.
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  #8  
Old 03-28-2013, 02:49 PM
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boramkiv boramkiv is offline
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Quote:
Originally Posted by champaign777 View Post
and please dont buy K&N
I killed my MAF using it on my E39
Why do so many people say this?
I mean, yes it can kill your MAF. But that's only if you overcoat it after cleaning.
I've been running K&N in my X5 since 2006 and now with over 182,000 miles and no MAF related issues.
When I got my 5, a week later a K&N filter was at my doorstep for it and has been in there since with no issues.
Wash, rinse, dry, coat lightly and reinstall.
It's been working for me for years.
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  #9  
Old 03-28-2013, 02:51 PM
pjinca pjinca is offline
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I have run K&N filters in every car for about the last 10 years, never had an issue. Of course, proper care when cleaning and reoiling is crucial, also after cleaning and reoiling I usually clean my MAF within 200 miles. Not difficult to do, MAF cleaner is $7, there really is no excuse. But I'd love to hear how exactly it was determined that the K&N filter damaged the MAF. I have seen posts like this before and have never seen anyone offer proof that any filter has damaged a single component.


I might actually try the BMC filter soon, gotta figure, if it's good enough for F1 should be good enough for my E60 :
"Since 1996 BMC air filters have equipped some of the most important Teams in F1 and American Le Mans Series like Ferrari, Toyota, Williams BMW, Prost, Sauber, Minardi, Porsche and Audi."
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Previous 3 cars (the 550 is my 38th car):
2005 530i - Prem, Sport, NAV
2006 Jeep SRT-8
2003 Infiniti G35 coupe

Last edited by pjinca; 03-28-2013 at 03:15 PM.
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  #10  
Old 03-28-2013, 03:20 PM
Slobo7x Slobo7x is offline
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K&N makes amazing filter products, that's probably user error during
install that killed maf. I've never had any issues with them.

I'm building it out of same aluminum, we'll see what happens. gotta be better then factory setup.

I'm not bashing their producing, I'm tying to justify the cost. I've seen a vendor on another forum sell them for $39.99 but that was two years ago..
I've seen no actual data yet to prove their claims, so to each his own.
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  #11  
Old 03-28-2013, 03:24 PM
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champaign777 champaign777 is offline
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dude i am not a "user error" but a DIY guy with 3 BMW

why do y think i sold almost new kit and 2 K&N filters ?

http://forums.bimmerforums.com/forum...N-cleaning-kit

because i paid 300$ for a new MAF and i learned my study lesson the hard way

You like it you use it, your experiences is maybe different from my
GL !
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  #12  
Old 03-28-2013, 03:28 PM
pjinca pjinca is offline
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Quote:
Originally Posted by Slobo7x View Post
K&N makes amazing filter products, that's probably user error during
install that killed maf. I've never had any issues with them.

I'm building it out of same aluminum, we'll see what happens. gotta be better then factory setup.

I'm not bashing their producing, I'm tying to justify the cost. I've seen a vendor on another forum sell them for $39.99 but that was two years ago..
I've seen no actual data yet to prove their claims, so to each his own.
LOL, not saying you shouldn't make one if you have the skills to do so. Feel free, as you say: "it's got to be better than the factory setup" Best of luck. I am always all for people doing DIYs and modding their cars themselves.
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2006 Jeep SRT-8
2003 Infiniti G35 coupe
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  #13  
Old 03-28-2013, 03:30 PM
pjinca pjinca is offline
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Quote:
Originally Posted by champaign777 View Post
why do y think i sold almost new kit and 2 K&N filters ?

http://forums.bimmerforums.com/forum...N-cleaning-kit

because i paid 300$ for a new MAF and i learned my study lesson the hard way
I have seen dozens of threads like this, and still, not one person claiming K7N "damage" has produced a single bit of proof showing K&N (or anyone else's filter) being the cause of any type of failure. Many race teams trust K&N, BMC and other filters with cleaning the air heading into their $100k + engines, so it works for them but not for anyone else?
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2005 530i - Prem, Sport, NAV
2006 Jeep SRT-8
2003 Infiniti G35 coupe
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  #14  
Old 03-28-2013, 03:46 PM
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boramkiv boramkiv is offline
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Here's a good video to go with this thread. There are four parts, but this is one of the shorter videos. I learned some stuff too watching them all.

http://m.youtube.com/watch?feature=relmfu&v=_SPd10AswCo
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  #15  
Old 03-29-2013, 10:59 AM
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gmnmsclM540i gmnmsclM540i is offline
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So, other than "you can make your own, dont spend your money" or "k&n killed my maf" anybody have any problems with an rpi scoop?
Does anyone say this scoop doesnt work?
Sent from my DROID RAZR using Bimmer App
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  #16  
Old 03-29-2013, 11:31 AM
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F1.tifosi F1.tifosi is offline
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Quick question

I have an intake (Injen Intake) i wanted to make sure if i can also add the RPI Scoop?
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Old 03-29-2013, 11:41 AM
pjinca pjinca is offline
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Quote:
Originally Posted by gmnmsclM540i View Post
So, other than "you can make your own, dont spend your money" or "k&n killed my maf" anybody have any problems with an rpi scoop?
Does anyone say this scoop doesnt work?
Sent from my DROID RAZR using Bimmer App
I have never heard of any issues with the scoop, but you can always check the RPI forums. They have them on their website: raceprecision.com

Quote:
Originally Posted by F1.tifosi View Post
Quick question

I have an intake (Injen Intake) i wanted to make sure if i can also add the RPI Scoop?
Yes, you can add teh scoop depending on where the Injen is taking in air from. Some of you N54 guys have those dual cone intakes that have the cones on the drivers side of the engine around the middle, I doubt the scoop could force any extra air that far into the engine compartment without a tube to direct it at the cones.
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2006 Jeep SRT-8
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  #18  
Old 03-29-2013, 11:43 AM
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Quote:
Originally Posted by pjinca View Post
I have never heard of any issues with the scoop, but you can always check the RPI forums. They have them on their website: raceprecision.com



Yes, you can add teh scoop depending on where the Injen is taking in air from. Some of you N54 guys have those dual cone intakes that have the cones on the drivers side of the engine around the middle, I doubt the scoop could force any extra air that far into the engine compartment without a tube to direct it at the cones.
Yes the dual cone is on the drivers side and facing ourwards.. Whats your thought on adding it will be any beneficial?
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Cobb (Race E30 Map PTF -Jake) | Injen DCI | BMS OCC | ER anodized FMIC |AR DP Catted |TIAL Q BOV | ER Diverter Valve Charge Pipe | Quaife LSD | RPI GT Race Catback Exhaust | P3(VIDI) Boost Gauge| BMS LT Thermostat | LED AE, Interior, Fog, Side Marker | 19" Style 433 M | Michelin PS A/S 3 |
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Old 03-29-2013, 11:45 AM
pjinca pjinca is offline
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Quote:
Originally Posted by F1.tifosi View Post
Yes the dual cone is on the drivers side and facing ourwards.. Whats your thought on adding it will be any beneficial?
It could be, but again, it would need a tube directing air from the front inlet to the cones to have any real effect. Otherwise you're just blowing air into the engine compartment
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2006 Jeep SRT-8
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  #20  
Old 03-29-2013, 11:58 AM
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Quote:
Originally Posted by pjinca View Post
It could be, but again, it would need a tube directing air from the front inlet to the cones to have any real effect. Otherwise you're just blowing air into the engine compartment
Good point.. I'll check on it with the indy shop.. Thanks Pjinca
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Cobb (Race E30 Map PTF -Jake) | Injen DCI | BMS OCC | ER anodized FMIC |AR DP Catted |TIAL Q BOV | ER Diverter Valve Charge Pipe | Quaife LSD | RPI GT Race Catback Exhaust | P3(VIDI) Boost Gauge| BMS LT Thermostat | LED AE, Interior, Fog, Side Marker | 19" Style 433 M | Michelin PS A/S 3 |
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  #21  
Old 03-29-2013, 03:26 PM
Mike Swing Mike Swing is offline
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I hate to ask this but what is a MAF? Great thread! I'm sold on trying out a RPI scoop for my neglected N52 engine.
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Old 03-29-2013, 04:16 PM
pjinca pjinca is offline
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Quote:
Originally Posted by Mike Swing View Post
I hate to ask this but what is a MAF? Great thread! I'm sold on trying out a RPI scoop for my neglected N52 engine.
MAF = Mass Air Flow sensor
It tells the engine how much air is going into the engine so that the ECU (Engine Control Computer) can adjust the fuel air mixture for optimal performance
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  #23  
Old 03-29-2013, 08:06 PM
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booyaazaa booyaazaa is offline
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Quote:
Originally Posted by F1.tifosi View Post
Good point.. I'll check on it with the indy shop.. Thanks Pjinca
Hey F1 for the Injen intake it won't have a direct affect since the snorkel is removed from the engine compartment. With the bms or procede dci's it would help, at speed, send more air through the snorkel that directs air over the dci's. I included a pic of the snorkel and dci's from my car. Figure at freeway speeds it helps get more outside air into the engine compartment.
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Old 04-02-2013, 09:25 PM
NOTORIOUSe60 NOTORIOUSe60 is offline
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I second that.

People, don't forget that the stock box has an inlet tube running from just to the right side of the radiator into the air box, through the filter, past the MAF and into the motor.

If you change out that box for any open cone intake, the RPI intake system or any aftermarket intake that no longer utilizes the stock air intake tube, the scoop will do nothing at all. The only legitimate aftermarket intake that improves performance and doesn't just feed the motor gobs of hot air is the Dinan box. If you were to get that, make sure to get the M5 RPI double scoops as the Dinan box adds a second intake tube and utilize both ports on both sides of the radiator, like the M5 does.
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Old 04-02-2013, 09:41 PM
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booyaazaa booyaazaa is offline
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Quote:
Originally Posted by NOTORIOUSe60 View Post
I second that.

People, don't forget that the stock box has an inlet tube running from just to the right side of the radiator into the air box, through the filter, past the MAF and into the motor.

If you change out that box for any open cone intake, the RPI intake system or any aftermarket intake that no longer utilizes the stock air intake tube, the scoop will do nothing at all. The only legitimate aftermarket intake that improves performance and doesn't just feed the motor gobs of hot air is the Dinan box. If you were to get that, make sure to get the M5 RPI double scoops as the Dinan box adds a second intake tube and utilize both ports on both sides of the radiator, like the M5 does.
Very true for you NA engine guys. However for the N54/55 engines the air has to go through the turbos that are using the hottest part of the car to cram air into the engine. Luckily we have a fmic to lower the charged air temp to make the air cooler.
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