Missing Air intake flap

[mattCSLnut]

Originally Posted by lawsy

Sorry, its you southerners with no sense of humour,

My car is most definitely not for sale, but if it was it would come complete with fully functioning air flap.

Ahhh... but it was when I was looking for a SG CSL few weeks ago, wasn't it. Isn't yours the one with NO speck at all, except the retrofit Angel eyes and Xenons ? +2

[mattCSLnut]

Originally Posted by glendog74

no need to shout in every post matt...!

WHAT ???

[shimmy]

look i am sure others will correct me but;

1. i have had 3 intake potentiometers for the flap activation. all three have broekn in about 1 year. I am convinced they give up because they cannot stand the constant strain of opening the flap which is a tightish fit to the intake

2. All it means is that the intake is constantly open and as the intake flap is only there for emissions/noise control (Eliott say noise but i thought it was emissions) who gives a flying ......

3 The Sport button is somehting totally independant and only affects the flap by allowing it to open at around 3500 revs rather than higher (4500-5000 ish???)

4. Sport button adjusts your ECU to give about 25bhp more instantly along with the throttle to give a better response to the throttle pedal. Sport button also changes you exhaust note by modulating the sport exhaust flaps by the exhaust manifold. Finally it hardens your steering rack sensitivity to make it more racey


Enjoy

[shane@mbtech]

Originally Posted by mattCSLnut

Ahhh... but it was when I was looking for a SG CSL few weeks ago, wasn't it. Isn't yours the one with NO speck at all, except the retrofit Angel eyes and Xenons ? +2

Just as bmw intended. Least mines got an airflap. and my dads better than yours

[shane@mbtech]

Originally Posted by shimmy

look i am sure others will correct me but;

1. i have had 3 intake potentiometers for the flap activation. all three have broekn in about 1 year. I am convinced they give up because they cannot stand the constant strain of opening the flap which is a tightish fit to the intake

2. All it means is that the intake is constantly open and as the intake flap is only there for emissions/noise control (Eliott say noise but i thought it was emissions) who gives a flying ......

3 The Sport button is somehting totally independant and only affects the flap by allowing it to open at around 3500 revs rather than higher (4500-5000 ish???)

4. Sport button adjusts your ECU to give about 25bhp more instantly along with the throttle to give a better response to the throttle pedal. Sport button also changes you exhaust note by modulating the sport exhaust flaps by the exhaust manifold. Finally it hardens your steering rack sensitivity to make it more racey


Enjoy

Now I know all this Im gonna knock one out all over my flap.

[glendog74]

Originally Posted by mattCSLnut

Ahhh... THANX GlenDog that's beginning to make some sense. Am I OK to run it as it is or should I get myself a flap and stick it back in for originality ? (as BMW AG intended)

I would leave it as it is - flap motor knackered or otherwise. The flap was only ever there to satisfy noise regs as has been mentioned.

The only minor side affect would be that the air filter may get soiled slightly quicker than it would otherwise with flap in place (at lower revs anyway...) Not worth concerning oneself about!

[mattCSLnut]

Originally Posted by glendog74

It also opens with sport 'off' - just at a higher rev bracket.

I removed my flap over a year ago and although i now don't get the night and day sound difference between sport on and off, i do still get a noticeable audible difference when sport is selected on. It may be due to my SS Race silencer, but the noises definitely hardens and gets raspier when sport is on

All that U describe does happen (without the flap)

[shane@mbtech]

Originally Posted by mattCSLnut

Ahhh... but it was when I was looking for a SG CSL few weeks ago, wasn't it. Isn't yours the one with NO speck at all, except the retrofit Angel eyes and Xenons ? +2

Everythings for sale at the right price, tbh im glad you bought someone elses, as it would have been a big mistake selling it. Its too good to sell and will be even better white

[shane@mbtech]

Originally Posted by mattCSLnut

All that U describe does happen (without the flap)

If its true what shimster says the exhaust note changes that will explain the difference you feel.

[mattCSLnut]

Originally Posted by shimmy

look i am sure others will correct me but;

1. i have had 3 intake potentiometers for the flap activation. all three have broekn in about 1 year. I am convinced they give up because they cannot stand the constant strain of opening the flap which is a tightish fit to the intake

2. All it means is that the intake is constantly open and as the intake flap is only there for emissions/noise control (Eliott say noise but i thought it was emissions) who gives a flying ......

3 The Sport button is somehting totally independant and only affects the flap by allowing it to open at around 3500 revs rather than higher (4500-5000 ish???)

4. Sport button adjusts your ECU to give about 25bhp more instantly along with the throttle to give a better response to the throttle pedal. Sport button also changes you exhaust note by modulating the sport exhaust flaps by the exhaust manifold. Finally it hardens your steering rack sensitivity to make it more racey


Enjoy

Thanx SimmMeister that sounds reasonably sensible Shall I leave it as it is or re-fit the flap where it belongs ?