my M3 CSL

[khooni]

why not recaro spg or spa?

[cslsuperfan]

Originally Posted by khooni

why not recaro spg or spa?

Spa 2.5Kgs.....yummy

[alexk]

I am considering the SPG too.
But I need to see them live and test them.

A bit difficult this

[alexk]

A part which is a bit unnecessary and adds weight is the secondary air pump.
This blows air in the exhaust manifold to make the emissions look better.
It's common practice in motorbikes to remove this air pump.

BMW is offering a block of plate for the cylinderhead of the S54 to close the hole once you remove it.

Here it is.



Only 16g of weight




Here the pump removed.
1448g



And the pipe with the valve.
252g




So here we have 1.7kg of weight removed with a cost of 25 EUR.

Unlike my Yamaha R1, the CSL is supposed to have a check engine light because I removed this pump.
The engine light didn't come on yet.
I will explain how we deal with this by reprogramming the ECU

[CraigMillwardCroft]

Some parts seem to be that heavy concrete cracked

[Levente]

for me the most suprising weight is the original exhaust backbox, what were they thinking to put this on a CSL? its like moving a rock. its damn heavy.

[glendog74]

Originally Posted by alexk

A part which is a bit unnecessary and adds weight is the secondary air pump.
This blows air in the exhaust manifold to make the emissions look better.
It's common practice in motorbikes to remove this air pump.

BMW is offering a block of plate for the cylinderhead of the S54 to close the hole once you remove it.

Here it is.



Only 16g of weight






So here we have 1.7kg of weight removed with a cost of 25 EUR.

Unlike my Yamaha R1, the CSL is supposed to have a check engine light because I removed this pump.
The engine light didn't come on yet.
I will explain how we deal with this by reprogramming the ECU

Any light yet Alex?

[glendog74]

Originally Posted by Levente

for me the most suprising weight is the original exhaust backbox, what were they thinking to put this on a CSL? its like moving a rock. its damn heavy.

+1

[alexk]

Originally Posted by Levente

for me the most suprising weight is the original exhaust backbox, what were they thinking to put this on a CSL? its like moving a rock. its damn heavy.

The CSL concept car had a titanium full exhaust (headers all the way to the backbox) and the backbox had carbon exhaust tips.
Where do you think Akrapovic got the idea from ?

Originally Posted by glendog74

Any light yet Alex?

No light yet Rob.
As soon as it appears, I will explain what I am doing to resolve this.

[mattCSLnut]

Originally Posted by Levente

for me the most suprising weight is the original exhaust backbox, what were they thinking to put this on a CSL? its like moving a rock. its damn heavy.

... a 25 kg rock