[O-cha]

Originally Posted by JoeT

ram-air rock/pebble/detritus collector

I could see all sorts of bugs getting scooped right up by those things.

[Neema]

GruppeM, BMC drop in air filter, plus this = good

[Neema]

Originally Posted by JoeT

ram-air rock/pebble/detritus collector

true, i dont think im investing these until more is proven and put forth

[nespharym]

Originally Posted by O-cha

I'm going to guess that if these really helped BMW and every other car company would already have them on their car. Sure a lot of cars use ram air intakes, but they are much bigger than these little things, and even then its the consensus that they don't do much till around 80 and then not even all that much. Also, those cars intakes are about 35 times bigger than these little things.

There are many modifications which "help" or aid a vehicle, but may not always be in the manufactures overall plan or budget

[O-cha]

Originally Posted by nespharym

There are many modifications which "help" or aid a vehicle, but may not always be in the manufactures overall plan or budget

The point was that its usually in someones budget, but I've never seen this in any car ever.

[nespharym]

Dont Guess....these scoops have been proven...for more info, review the initial post and click on the link

[sambonator]

Looks interesting, and may actually work at higher speeds... but personally I'd rather have more air going to the radiators to cool the engine to prevent heat related limp modes...

How about a hood scoop?

[2e9x's]

Originally Posted by sambonator

Looks interesting, and may actually work at higher speeds... but personally I'd rather have more air going to the radiators to cool the engine to prevent heat related limp modes...

How about a hood scoop?

+1...exactly what I was thinking.

As to the hood scoop...if you supply the scoop, I will supply the flaming chicken sticker

[GrimmSpeed]

Originally Posted by White05X3

+1...exactly what I was thinking.

As to the hood scoop...if you supply the scoop, I will supply the flaming chicken sticker

you best be taking video of you sawzall'ing into your hood if you do it!!!!!

[silvrevo]

That thing on a $100K Car?

Why not got the full 9 yards and slap on a Vornado too.

[Terry335]

Call me crazy but I could see a benefit here, at the expense of engine cooling. Which might be an OK tradeoff for some of us.

I'd rather have a discrete black scoop hidden under the grill than two fugly cone filters in the engine bay, FWIW.

[scottp999]

This is suppose to be what the gruppe m does. Bigger scoops than factory, greater piping to the airbox, and k&n filter. Claimed 10whp.

[T Bone]

Originally Posted by RPIpower

Hi guys. We are the ones that developed the scoops for the 335i. I don't believe many of the hot air...I mean cold air intake systems out there now a days. Switching to a cone or induction type filters rids you of the ability to pressurize air into the system. Anyhow, the systems have worked well for the M5 and M6s, both on the street and track so I made these as a favor for Carlos. The purpose of the scoops are to channel dedicated air into the stock intake ducting. Without the scoops, the engine is just sucking its share of air that is flowing directly at the radiator, etc.

Here is an example of how it works on the M5 and M6. The 335i is no different. All you have to do is look at where the stock intake is getting air from. The only concern right now is if these scoops are going to cause for higher coolant and oil temps. We saw no issues on the M cars but will continue to monitor this one. Like everything else we did on the M cars, we will test them on a few other cars before we make any claims. So...some of you local guys may want to jump in and get some free dyno time.

To the peeps on this board. The principal of RPI is Eloy.....he is a stand up guy and a great vendor.

The M5 / M6 gains are proven. And unlike some vendors, you are going to get full value for your money.

I have a set of the M6 scoops and I just need a little quiet time to install them.

I have no doubt about any gains on the 335i once Eloy sorts it out and publishes the final numbers.

[ezatnova]

Originally Posted by nespharym

Even after reading the gains from the M5/M6s, and the gains from the first runs (we would have had better hp gains without the bent rim)...you still make such a sophmoric statement.

I really hope those who were bold enough to dispute the potential gains "Man-up" when the evidence resembles the M5/M6 gains.

Last time I checked M5/M6 weren't turbo cars. Cold air does much less for a turbo car. Flow/volume is more important than temps.
Also, the drag from these things isn't reflected on a dyno, whereas it would be like two little parachutes on the road at 80 mph. Shiv has a point about a little extra cool air on a dyno, vs driving on the road...big difference.
I had a VERY similar "ram-air" scoop/box under the intake of my Grand National, poking out below the underside of the car. I was less concernded about the drag there since the car was a damn brick to start with. Oh, and the company stopped making that system since it found it really didn't help that much, vs the larger cone filter alone.

[Driver72]

Originally Posted by nespharym

but even still on the following cars

- 2007 M6 (+12whp)
- 2006 M5 (+10whp)
- 2008 M5 (+16whp)

would you turn away up to 16whp gain for about $250....and I think that is for the whole kit

RPi Ram Air Kit includes.
- BMC air filters
- RPi Ram Air Scoops
- Mounting Screws + instructions

What I find interesting is how on the 06/07 cars it gained about 10-12 rwhp, but on the 2008 car it gained 16 rwhp.

Wonder if this has anything to do with the new 2008 ECU reprogramming of many BMW's that seem to have less power than the 2007's??

[sambonator]

Originally Posted by Terry335

Call me crazy but I could see a benefit here, at the expense of engine cooling. Which might be an OK tradeoff for some of us.

I'd rather have a discrete black scoop hidden under the grill than two fugly cone filters in the engine bay, FWIW.

Ya I'd put them on for drag days, and take them off for road courses. I wonder if they're easy to put on and remove?

[judec]

I can see it doing something on NA car, but on FI?

Also - with all of the cooling issues of the 335i (under load on a track (road course in US)) no way I would put anything in the way of cooling air. Gains or not, if U get limp home, U can limp home... even with your +10 horses.

[1clean335i]

i'd buy it to try it out...

[schneid4323]

Originally Posted by nespharym

Even after reading the gains from the M5/M6s, and the gains from the first runs (we would have had better hp gains without the bent rim)...you still make such a sophmoric statement.

I really hope those who were bold enough to dispute the potential gains "Man-up" when the evidence resembles the M5/M6 gains.

The M5 and M6 dont have twin turbos.

[midlife]

Originally Posted by Boost_Nation

GruppeM, BMC drop in air filter, plus this = good

bump

[JoeT]

rule of thumb is ram-air intake devices have little to no effect below 100 mph... and that's with much bigger scoops than are being shown here
(ram air aka headlight removal mod on my drag car is worth about 1 mph in the traps, and it spends the entire back half of the 1/4 mile over 100) so it has some mild effect over 100, at the potentially disastrous cost of inhaling things you really don't want to inhale.

ftl, jmho

[RPIpower]

Originally Posted by Driver72

What I find interesting is how on the 06/07 cars it gained about 10-12 rwhp, but on the 2008 car it gained 16 rwhp.

Wonder if this has anything to do with the new 2008 ECU reprogramming of many BMW's that seem to have less power than the 2007's??

Those are just tests we did on different cars but yes, there are variances from car to car and I know the cars with the latest ecu updates have tend to run a bit richer. We always posts the lowest and the highest. The lowest gains we have seen on an M5 or M6 is 10whp (our own M5), while others have seen better results.

Originally Posted by ezatnova

Last time I checked M5/M6 weren't turbo cars. Cold air does much less for a turbo car. Flow/volume is more important than temps.
Also, the drag from these things isn't reflected on a dyno, whereas it would be like two little parachutes on the road at 80 mph. Shiv has a point about a little extra cool air on a dyno, vs driving on the road...big difference.
I had a VERY similar "ram-air" scoop/box under the intake of my Grand National, poking out below the underside of the car. I was less concernded about the drag there since the car was a damn brick to start with. Oh, and the company stopped making that system since it found it really didn't help that much, vs the larger cone filter alone.

True, turbo cars wont benefit as much from ram air as the NA cars. The turbos will suck in much more air than the NA ever would. With that, we still see a benefit from the scoops as it directs air into the stock intake opening.

Not every company will make or sell these things because many of them want to sell you a cone filter with a shiny pipe.

At this time, we have no plans to release the scoops for the 335i yet. We already have a few volunteers that will have the scoops installed and dyno tested. Our dyno tests are done with 70mph winds. Winds lower or higher than 70mph will/may see different results. For example, we have M owners who have gone over 150mph then go into limp mode from too much airflow.

Those who are familiar with our company know about our "open house" testing. When we test products, people can come watch us. If it does nothing, its scrapped. You'll never see bogus products coming out of here. We released our 335 intercooler a couple of months ago and we guaranteed its 80%+ thermal efficiency rating. More tests on the scoops will be conducted before we make any official claims.