Sport Button thoughts.

[3wheels3]

Originally Posted by shimmy

...(didnt soemone post a table of pedal travel to throttle opening sport on and off recently)...

I have seen a graphical representation of it somewhere & know what you're getting at

[3wheels3]

shim

[ando]

And here's me thinking it was something to do with the Flux Capacitor????

[The Gorilla]

Hi,

Who complied that Graph please ?

Reason is that its incorrect.

A TB will give its max performance at
something like 92/93% of opening.

The reason is simple the ''butterfly''
obstructs the flow path so it can
never give 100 % throttle opening
it can only give 100 % on the Throttle
angle.

Therefore, accordingingly the Graph
would be showing 100% throttle angle
which in real terms would be approx
93% open Butterfly at 80% of Pedal travel.

The M3 Throttle Pedal has a detent set
at something like 95% of travel
for this very reason.

Some alter the Throttle pedal detent thinking
that the final 5% pedal, will give more power,
when the Throttle bodies are already
maxed out at 95% of butterfly opening.

Regards,

The Gorilla.

[3wheels3]

Originally Posted by The Gorilla

Hi,

Who complied that Graph please ?

Reason is that its incorrect.
...
Regards,

The Gorilla.

Hi

Searched google, something like 'e46 m3 throttle position sport mode', images only. Gives 3 or 4 different graphs different sources.

eg http://forums.m3cutters.co.uk/showthread.php?t=5850

[azrael]

This thread would be more interesting if it was sports illustrated

[glendog74]

Originally Posted by azrael

This thread would be more interesting if it was sports illustrated

Shimmy has a lot to answer for...

[3wheels3]

Originally Posted by azrael

This thread would be more interesting if it was sports illustrated

There's an app for that

[shimmy]

Originally Posted by The Gorilla

Hi,

Who complied that Graph please ?

Reason is that its incorrect.

A TB will give its max performance at
something like 92/93% of opening.

The reason is simple the ''butterfly''
obstructs the flow path so it can
never give 100 % throttle opening
it can only give 100 % on the Throttle
angle.

Therefore, accordingingly the Graph
would be showing 100% throttle angle
which in real terms would be approx
93% open Butterfly at 80% of Pedal travel.

The M3 Throttle Pedal has a detent set
at something like 95% of travel
for this very reason.

Some alter the Throttle pedal detent thinking
that the final 5% pedal, will give more power,
when the Throttle bodies are already
maxed out at 95% of butterfly opening.

Regards,

The Gorilla.

i thought you said it was fuel related and nothing to do with pedal/throttle opening changes!

[The Gorilla]

Hi,

Shimmy- you have me confused.

All I said was that the Graph was incorrect
in regard of the data provided.

I then gave some paramiters to explain
why I said the Graph was incorrect.

Last I explained the Throttle
Pedal 95% v TB's at full throttle.

I still maintain that the Fueling is increased
on the ''CSL'' Alpha N type set up
with the Sport Button on.

Reason being due to the Adaptive
fueling of the CSL ECU, that the std
M3 does not have.

On a standard S54 with MAF then its
throttle pedal angle v throttle angle,
over the Mid range only, which is all that can
alter, as the TB's are closed at the
start and open as wide as they can
at full throttle.

The start and end points are fixed.

ie] Pedal off would be zero, and
pedal fully depressed [95% to detent] would be
100 % of Throttle angle with
Butterfles giving approx 93/4% flow.

Go drive a Std M3 with sport on
and then go drive a CSL with
sport on.

Reagrds,

The Gorilla.