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View Full Version : What RPM does the intake flap open when not in sport mode?


Obioban
03-12-2010, 01:17 PM
I'm retrofitting the intake flap to my CSL intake on my non CSL M3, which means I'm going to have to control it with a window switch (like is traditionally used in nitrous setups) instead of the ECU. That said, I'd like it to open at whatever RPM BMW decided was best-- what RPM is that?

Thanks in advance! :smt055

sailorbaz
03-12-2010, 02:35 PM
It depends on whether the sport button is pressed or not.

Without, I think it opens well over 6K and without its about 2.5K. This is a rough guess and I know someone more talented will be along soon with a more accurate (read 'perfect') answer.

Good luck with that, I'm not sure how she'll run without mapping.

mole
03-12-2010, 03:19 PM
Go flapless, it's the way forward :thumbs:

Obioban
03-12-2010, 04:25 PM
It depends on whether the sport button is pressed or not.

Without, I think it opens well over 6K and without its about 2.5K. This is a rough guess and I know someone more talented will be along soon with a more accurate (read 'perfect') answer.

Good luck with that, I'm not sure how she'll run without mapping.

I've actually been running the box with a custom tune for the last 8 months.

Go flapless, it's the way forward :thumbs:

I think I'm going to control it with a variable window switch. That way I can open the flap full time whenever I want, or flap it as I choose.

I've been running fully flapless since I got it:

http://homepage.mac.com/ianlindvig/clean63/DSCN0217.jpg

Obioban
03-12-2010, 04:26 PM
And if anyone was curious, here's the benefits from the box alone.

I had a custom tune before and after the box was put on, so this is purely box gains, not tune gains:

http://homepage.mac.com/ianlindvig/airbox/1.jpg

DuncanR
03-12-2010, 05:12 PM
Without, I think it opens well over 6K and without its about 2.5K. .
Forgive me here ..but ...aint they both the same then ??:hahaha:

Pip1968
03-12-2010, 05:33 PM
How have you managed to get the oil dipstick there and still visible and have the airbox. What is missing that obscures it in the CSL?

Pip

Obioban
03-12-2010, 06:08 PM
How have you managed to get the oil dipstick there and still visible and have the airbox. What is missing that obscures it in the CSL?

Pip

Factory dip stick, just rotated. It may be because I don't have my power steering fluid there like you guys do.

shimmy
03-12-2010, 07:58 PM
I can't remember the official RPM open and closed but when I get home I'm gonna get in the car and check

But when you've finished take it out as it will break ;)

Bounce
03-12-2010, 08:19 PM
I can't remember the official RPM open and closed but when I get home I'm gonna get in the car and check

But when you've finished take it out as it will break ;):hahaha::hahaha:

double_r
03-12-2010, 09:39 PM
How have you managed to get the oil dipstick there and still visible and have the airbox. What is missing that obscures it in the CSL?

Pip

The CSL has the shortened dip stick underneath the snorkel. The standard M3's have longer ones. Also, the SMG reservoir is missing in his car since its a traditional manual. I've relocated that reservoir to where the CSL has it when I installed the airbox

http://i19.photobucket.com/albums/b176/throwbackfever/DSC_0025.jpg

NZ_M3
04-12-2010, 01:14 AM
If memory serves (I remember reading it somewhere, I'll try and dig it out when I have time)

Sport On - 3200rpm open

Sport off - 5600rpm open

Obioban
18-12-2010, 09:23 PM
Anyone have a functional intake flap they want to sell? They place I ordered it from now says they can't get it :rolleye:

SpineOnABap
19-12-2010, 12:14 PM
Anyone have a functional intake flap they want to sell? They place I ordered it from now says they can't get it :rolleye:

I've got a flap but not any of the housing or mechanical bits.

Rutkowski
19-12-2010, 11:05 PM
Anyone have a functional intake flap they want to sell? They place I ordered it from now says they can't get it :rolleye:

I have it - PM me if you still need it.

0-60Motorsports
10-01-2011, 09:49 AM
I will be installing an OEM CSL INtake on my Euro M3 soon, My Mechanic is a BMW Master tech and I'll ask him to hook my flap up to a button from where I can open or close it manually.

I think it might be a better idea to just leave it openn all the time? Suggestions fella's?

DuncanR
10-01-2011, 09:52 AM
I will be installing an OEM CSL INtake on my Euro M3 soon, My Mechanic is a BMW Master tech and I'll ask him to hook my flap up to a button from where I can open or close it manually.

I think it might be a better idea to just leave it openn all the time? Suggestions fella's?Save money ..dont buy it ...dont fit it ... weight saving solution ...simple !:thumbs:

0-60Motorsports
10-01-2011, 10:00 AM
Save money ..dont buy it ...dont fit it ... weight saving solution ...simple !:thumbs:

LOL Do you mean the Flap or the airbox? :D

DuncanR
10-01-2011, 10:02 AM
LOL Do you mean the Flap or the airbox? :D Ah ...yes ... good point .... probably just the flap !! Quite a few on here dont have them fitted for one reason or another ! I dont have one , but then again .... theres a lot my CSL doesnt have :bigcry:

0-60Motorsports
10-01-2011, 10:09 AM
Ok Cool Bro, I'll keep the flap but leave it open. Cheers.

DuncanR
10-01-2011, 10:17 AM
Happy Birthday for yesterday Jazzy as in 0-60 !!! ,:hahaha: hope you had a good one ! Bet it was BBQ weather out there :hahaha:

0-60Motorsports
10-01-2011, 10:18 AM
Happy Birthday Jaz

double_r
13-01-2011, 03:07 AM
Happy Birthday Jaz

Good luck with the CSL intake. I've done the conversion and its incredible sounding.

0-60Motorsports
13-01-2011, 06:16 AM
Thanks Bro! Will make a new thread on M3F once im done. Cheers.