RPI air scoops for 545
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Originally Posted by NeRwEEzy' post='603181' date='Jun 15 2008, 02:49 PM
C, like fantastic5 said, i too did feel a butt dyno difference but also dont know how much of it was mental. where i did feel (or thought i did at least) a difference was mostly after 80 leading into triple digits. at the time when i was at Eloy's, he said if they went into production that they would probably be about $100-$150 per scoop.
.Thanks N. It looks cool though, but if it does nothing, I'll pass.
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very debatable. for sure it does direct more air into that duct, and the end of that duct does lead to the area where the AFE intake is (on my car it does, but only about 3/4 of the opening is exposed because of the seal from the AFE) but gains if even any its not too much.
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Chennai, India
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Originally Posted by NeRwEEzy' post='603183' date='Jun 15 2008, 11:49 AM
you know you want to.... 
edit: Navin, sorry for hijacking your thread
edit: Navin, sorry for hijacking your thread
No worries, you are actually keeping the thread at the top of the list
and generating more interest.Hope i can make it to the Angelus Crest meet and talk to Eloy about working on one for the 545.
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My Ride: 2007 E63 AMG | Obsidian Black | Schwarzes Nappa | Black BirdEye Maple | Premium II Package | Electronic Trunk Closer | Parktronic
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Jerry,
You have a Step so being the 545i/550i prototype isn't going to work for you. He needs a SMG/6speed for the Dyno Dynamics. I'm sure he'll give you one for free after he fabricates one since you won it at the Central Cali Meet.
You have a Step so being the 545i/550i prototype isn't going to work for you. He needs a SMG/6speed for the Dyno Dynamics. I'm sure he'll give you one for free after he fabricates one since you won it at the Central Cali Meet.
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Originally Posted by navin' post='602133' date='Jun 13 2008, 04:01 PM
Spoke to Eloy at RPI and he said that he can make a ram air scoop for the 545s if there are atleast 20 people interested in it, Dyno it and design as required for the 545
or
If the number is lesser he can do a production run of just the one side of the scoop they make for the m5 and sell it to us for $100 although he cannot gaurantee the hp gains in this case.
Is the intake tube behind the front grille different on the M5 compared to the 545? (if we consider the right side alone)
Shouldn't the amount of air coming into the intake tube be the same for both cars if the design of the grille and the scoop is the same ?
The way the engines breathe and utilize the air coming in might be different hence different hp gains but the purpose of the scoop should have been achieved.
Am i correct in making this assumption ?
or
If the number is lesser he can do a production run of just the one side of the scoop they make for the m5 and sell it to us for $100 although he cannot gaurantee the hp gains in this case.
Is the intake tube behind the front grille different on the M5 compared to the 545? (if we consider the right side alone)
Shouldn't the amount of air coming into the intake tube be the same for both cars if the design of the grille and the scoop is the same ?
The way the engines breathe and utilize the air coming in might be different hence different hp gains but the purpose of the scoop should have been achieved.
Am i correct in making this assumption ?
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Well, no wonder it didn't show any gains. It's not designed correctly. It WILL show power gains on the 530i and even the 525i. It needs to be closer to the centerline, the physical form of the scoop needs to be redesigned (aiming to acheive less turbulence and smoother airflow), the whole scoop itself needs to be completely sealed to it's mounting point, and the diameter of the piping needs to be slightly decreased. There could also be an integrated velocity stack. I can give my number to RPI so they can use my car and I can help them with a more effecient design. Do they have a website or does anyone have a phone number for them?
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Originally Posted by pentiumpush' post='603773' date='Jun 16 2008, 02:35 PM
Well, no wonder it didn't show any gains. It's not designed correctly. It WILL show power gains on the 530i and even the 525i. It needs to be closer to the centerline, the physical form of the scoop needs to be redesigned (aiming to acheive less turbulence and smoother airflow), the whole scoop itself needs to be completely sealed to it's mounting point, and the diameter of the piping needs to be slightly decreased. There could also be an integrated velocity stack. I can give my number to RPI so they can use my car and I can help them with a more effecient design. Do they have a website or does anyone have a phone number for them?
And their contact info:
Race Precision, Inc.
7029 Marcelle Street
Paramount, CA 90723
Tel: 562.630.5966
Fax: 562.630.5968
email: sales@raceprecision.com
-frank
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Originally Posted by pentiumpush' post='602747' date='Jun 14 2008, 02:51 PM
Seems like the two would complement each other. The ram air scoop would allow you to feed the motor a denser charge of air, thus increasing power (with the right amount of fuel added to compensate of course). It seems logical to me, then that you would want to be a little methodical with this scenario. First, add a cold air intake (AFE, DINAN, ETC.). Then, add the ram air scoop. After that, get the ecu remapped. That should do the trick, being that the remapped ecu will be able to see the extra air flow and be able to correspondingly adjust air/fuel ratios, ignition timing, and the like to take advantage of it. I have never seen a picture of the AFE cold air intake before, but if the diameter of the piping was decreased by say, 3mm, while adding the ram air scoop the effect should be that velocity would be increased while at the same time increasing volume. Good response, more power, better fuel economy.