[Spitfirocks]

And I could not be more astonished.

To everyone saying it is barely noticeable, i Am very sorry, but it really is.

Thing is, My old air filter was very dirty, so I had gotten used to the slugishness. Now, on the freeway, above 70mph, my car pulls like I have never felt before. It is absolutely noticeable, and is amazing.

Even the 0-60 has gotten way better... For example, there is a strip of straight road by my house, which is very flat, and has white checkered lines and yellow flashing lights at the end, and rarely any traffic. This is how my friends and I test our cars, to see the speeds we hit before the white line.

My car before :99 mph
My car after: 110 mph (HUGGEEEE DIFFERENCE)


For funsies:

335i: 119
e46 m3: 118
Camaro v6: 100
m5: 134
650i : 120
Chevy Malibu SS: 115
RSX: 80
camry hybrid: 81

[Sherwood]

hahaha, the Camry Hybrid took the rsx

[dtc100]

Welcome to the club, now we just need to give a very cool name to this club of ours that does these three things

Let me try first:

OFFMYCFWASS Club: Oiled Filter First Minus Yucky Carbon Filter with Air Scoop Supplement Club

[guerilla twang]

Originally Posted by Sherwood

hahaha, the Camry Hybrid took the rsx

LOL! That's what I was thinking.

OP glad you're happy with your car.

[VANOS]

Have you or are you going to do any exhaust mods?

[dtc100]

Specs on the Malibu SS?

[Gavin@MMW]

Originally Posted by dtc100

Welcome to the club, now we just need to give a very cool name to this club of ours that does these three things

Let me try first:

OFFMYCFWASS Club: Oiled Filter First Minus Yucky Carbon Filter with Air Scoop Supplement Club

LOL Im joining


Hey OP, What road are you talking about? Im right around the corner from you and would love to be added to the list

[t1mmy]

i installed my BMW CAI a little over half a year ago, might be time to clean out my air filter. any good guides?

[benzo23]

Originally Posted by Spitfirocks

And I could not be more astonished.

To everyone saying it is barely noticeable, i Am very sorry, but it really is.

Thing is, My old air filter was very dirty, so I had gotten used to the slugishness. Now, on the freeway, above 70mph, my car pulls like I have never felt before. It is absolutely noticeable, and is amazing.

Even the 0-60 has gotten way better... For example, there is a strip of straight road by my house, which is very flat, and has white checkered lines and yellow flashing lights at the end, and rarely any traffic. This is how my friends and I test our cars, to see the speeds we hit before the white line.

My car before :99 mph
My car after: 110 mph (HUGGEEEE DIFFERENCE)


For funsies:

335i: 119
e46 m3: 118
Camaro v6: 100
m5: 134
650i : 120
Chevy Malibu SS: 115
RSX: 80
camry hybrid: 81

Lets think about what your saying from a 1/4mile standpoint. You picked up an extra 11mph when you hit the white line?...roughly 95-96mph is what your trap speed would be in the quarter, give or take a few (we dont know distance on your road thats why im speculating,you said to the white line you hit 99 before). To add 11mph on the trap in the quarter would take ALOT of HP esp on these N/A cars...I dont know exact figures because I dont want to sit down and do any math at the end of the day...but just bullshitting on paper to add 11 more mph your 14.6-7 car got down to high 12's, just by adding scoops? There must be some sort of other conditions playing into this, perhaps you started back further and braked later, shifted early/ late, weather, im not saying you didnt do the 110mph because im sure you did. BUT to pick up over 11mph on scoops/carbon delete & k&n alone I find hard to believe , because I have the carbon delete and K&N and didnt feel a difference at all. If we could somehow time a highway run 70-90, 60-100...before and after would be a solid argument.

[335imax]

You know, if his filter was super dirty, and had leaves and a bird's nest in there. It would be possible...

[Gavin@MMW]

There are a lot of factors, like it was just summer and very hot out here in the Valley, so if he did that run on a 90°+ day vs. now when its cold - obviously is going to be much faster. Its not an accurate comparison by any means, but the main point is that the OP is happy with his mod, and its offering a noticeable change in the car

[dtc100]

Originally Posted by benzo23

Lets think about what your saying from a 1/4mile standpoint. You picked up an extra 11mph when you hit the white line?...roughly 95-96mph is what your trap speed would be in the quarter, give or take a few (we dont know distance on your road thats why im speculating,you said to the white line you hit 99 before). To add 11mph on the trap in the quarter would take ALOT of HP esp on these N/A cars...I dont know exact figures because I dont want to sit down and do any math at the end of the day...but just bullshitting on paper to add 11 more mph your 14.6-7 car got down to high 12's, just by adding scoops? There must be some sort of other conditions playing into this, perhaps you started back further and braked later, shifted early/ late, weather, im not saying you didnt do the 110mph because im sure you did. BUT to pick up over 11mph on scoops/carbon delete & k&n alone I find hard to believe , because I have the carbon delete and K&N and didnt feel a difference at all. If we could somehow time a highway run 70-90, 60-100...before and after would be a solid argument.

An air scoop manufacture claims on their dyno they got 9 to 15 extra whp at 70mph air flow. I also got to 90 to 100mph a few times myself believe me at that speed, the car with air scoop mods felt very different compared to not having the scoops, and I did not have birds nest in my airbox, ever, the car is still new

[mike-y]

benzo is right though. if that line is roughly a quarter mile, then he's trapping faster than 335i's with JB3's. picking up 10mph in the quarter is huge, it's like another 100+hp. I guess if the distance to the line is a lot longer than a quarter mile, it would make more sense, but then it would also mean his car was horribly slow to begin with.

needs more testing.

[Nqwjx30]

so is this the carbon delete procedure? (http://www.e90post.com/forums/showthread.php?t=21590) and then replace with some drop in? or can someone post the DIY thread for the carbon delete, searched but didnot find. Thanks

[Gavin@MMW]

U just posted the DIY link

[dtc100]

Originally Posted by mike-y

benzo is right though. if that line is roughly a quarter mile, then he's trapping faster than 335i's with JB3's. picking up 10mph in the quarter is huge, it's like another 100 hp. I guess if the distance to the line is a lot longer than a quarter mile, it would make more sense, but then it would also mean his car was horribly slow to begin with.

needs more testing.

Good to know, thanks!

Judging by the fact the 335i they tested still was faster, I'd say his test was credible, and it was not quarter mile but longer. Maybe not precisely 10mph faster, but he had data to show the drop in plus air scoops had clear impact.

[Das.Euro]

Originally Posted by dtc100

An air scoop manufacture claims on their dyno they got 9 to 15 extra whp at 70mph air flow. I also got to 90 to 100mph a few times myself believe me at that speed, the car with air scoop mods felt very different compared to not having the scoops, and I did not have birds nest in my airbox, ever, the car is still new

WOW ... Seems like thats more power then a TUNED ecu upgrade...
Dont believe everything you see junior lol

[Spitfirocks]

This is on sesnon/reseda.

I tested my car before about a month ago, I think it was a hot day, oh and my original air filter was DIRTYYYY.. Extremely dirty actually. And for any one who does not believe me, trust me, there is a HUGE difference. Not really lowend, but when your in the higherend, the car just keeps a strong pull.

[dtc100]

Originally Posted by Spitfirocks

This is on sesnon/reseda.

I tested my car before about a month ago, I think it was a hot day, oh and my original air filter was DIRTYYYY.. Extremely dirty actually. And for any one who does not believe me, trust me, there is a HUGE difference. Not really lowend, but when your in the higherend, the car just keeps a strong pull.

Even though your old filter was very dirty, it still had the same power as the Camaro V6. The difference is, it is now closer to the 335i and the M3.

Obviously your test was longer than 1/4 mile, even the new 335is could only do 104 mph. But the fact you gained 10 mph, according to mike-y, gaining 10 mph in 1/4 mile is the equivalent of gaining 100 hp, it is not so out of the line to say your car gained at least 9 to 15 hp, at a minimum it matches the air scoop manufacture's dyno claim.

Also I just realized, if your test was based on the driver's reading of the mph on the speedometer at the white checkered line, the reading is not accurate. Most cars are off about 10% at such high speeds, add that to the human perception because when the needle seems to reach 110 in a hurry, the meter is really saying 105. So if we take 15% off your readings:

Your car before: 85
Your car after: 94
335i: 101
E46 M3: 100
Camaro V6: 85
M5: 114
650i: 102
Malibu SS: 98
RSX: 68
Camry hybrid: 68

Now we are talking the real 1/4 mile numbers BTW I looked at the Google map, that part of the street does have a lot of people doing donuts there

[mike-y]

Originally Posted by Spitfirocks

I tested my car before about a month ago, I think it was a hot day, oh and my original air filter was DIRTYYYY.. Extremely dirty actually.

this does make more sense. hot weather is going to make your car slower anyway, plus the super dirty filter probably was robbing you some power as well.

[Juan.sidarta]

Originally Posted by Spitfirocks

And I could not be more astonished.

To everyone saying it is barely noticeable, i Am very sorry, but it really is.

Thing is, My old air filter was very dirty, so I had gotten used to the slugishness. Now, on the freeway, above 70mph, my car pulls like I have never felt before. It is absolutely noticeable, and is amazing.

Even the 0-60 has gotten way better... For example, there is a strip of straight road by my house, which is very flat, and has white checkered lines and yellow flashing lights at the end, and rarely any traffic. This is how my friends and I test our cars, to see the speeds we hit before the white line.

My car before :99 mph
My car after: 110 mph (HUGGEEEE DIFFERENCE)


For funsies:

335i: 119
e46 m3: 118
Camaro v6: 100
m5: 134
650i : 120
Chevy Malibu SS: 115
RSX: 80
camry hybrid: 81

Any sound diff?

[dtc100]

The intake sound is a little more aggressive with the air scoops but I also added my own extra air scoops DIY so my results may not be typical.

However the drop in and air scoops definitely will not get you the intake sound effect you can get from an aFe open air intake. But an open air intake will lose a little power at lower RPM due to lack of back pressure, and of course the higher cost.