KW3's and Catless

Twin Turbo

Zorg Guru (IV)
British Zeds
Joined
May 19, 2015
Points
151
Well some of you may know that i have one of them 4 pots two cylinders short lol

Well I wanted to improve the car looks, handling and performance.

So I recently fitted the above modes and thought I would provide an short review

Suspension

Well I had two objectives firstly to reduce the height as the gap between the tyre and the wheel arch was just to much for me – and improve its cornering.

The ride, well my fear would be it would be very harsh and to be honest it was quite a lot firmer than OEM sport – and was thinking What have I done. As there is not something you can experiment with prior – only reading other people’s feedback and take a subjective viewpoint. And what makes this more complex there are so many variables in settings of suspension makes things even more varied.

Well see picture below – thinking lowering it down a further 1 cm – but waiting for the settling in period.



I did take the car back to the garage regarding a possible Watergate rattle – but I will get to that point later. Anyway the garage fitter told me that they had set everything to 0 – so they changed it from the default settings. So I was thinking that’s why it felt like a bone shaker and speed bumps were a sure going to hurt my back.

Well this morning took the car down to a local tyre fitter, and wanted to change the settings to the bellow as I found from other users to be a comfortable ride, and great for fast road.

Front rebound – 9 clicks from full hard
Rear rebound - 7 clicks from full hard
Front Compression - 8 clicks from full hard
Rear Compression - 9 clicks from full hard

And to be honest after 100+ drive though Derbyshire B roads, the ride quality is great and handles speed bumps with more refinement than OEM.

And cornering well speed limits were the limitation – body role has totally been eliminated and healing (hard acceleration) has also been removed.

The car handles totally different than that supplied from BMW- and is much more to my liking.


As mentioned I removed my secondary cats, and had a rattle noise for the first two days – well I have installed an latest version of the firmware – and this seems to help reduce the problem as I have not heard the rattle any more since.

Well it defiantly feels stronger and pulls harder than before, to the point I get that sinking feeling under hard acceleration – that I only got from modifying my 3350D and 335i however no were near as intense.

It does really sound like an tractor or an Scooby on an clod start, but an few revs and it sounds normal – and there is an increase of popping which is also good.
 

littlefeller

Zorg Guru (IV)
British Zeds
The M44 Massive
Joined
Oct 18, 2015
Points
168
Location
evesham
looks the dogs dodas lowered:thumbsup: i didn't thing decats really work on non turbo cars, i could be wrong.
 

littlefeller

Zorg Guru (IV)
British Zeds
The M44 Massive
Joined
Oct 18, 2015
Points
168
Location
evesham
the gap on my rears is enormous, i was thinking larger tyres for me, would raise the gearing too.
 

Twin Turbo

Zorg Guru (IV)
British Zeds
Joined
May 19, 2015
Points
151
Capture.JPG
Enclosed below are some power runs I have done compared to prior to the cats been removed and looking at this there is an extra 20 bhp been gained.


This does show improvements from previous stage 1
 
Last edited:

billz

Zorg Expert (II)
Supporter
British Zeds
Joined
Dec 4, 2011
Points
226
Location
Langley Mill
Model of Z
Z4 3.0si Individual Ruby Black Last one produced in this colour combo
You just keep modding so if we get one around July/August i can set it up :thumbsup::whistle:
 

billz

Zorg Expert (II)
Supporter
British Zeds
Joined
Dec 4, 2011
Points
226
Location
Langley Mill
Model of Z
Z4 3.0si Individual Ruby Black Last one produced in this colour combo
Because we are hoping to upgrade to either a 28i 3.0i or 35i so if we get the 28i i can pinch some of your ideas to upgrade
 

Twin Turbo

Zorg Guru (IV)
British Zeds
Joined
May 19, 2015
Points
151
Not an problem, on any of the E89 I am familer with most upgrade options. As with the N20 there are far less than the N54.

I am more than happy to meet up as I live in Langley Mill so you can see how one feels - as I can turn the engine tune off.
 
Top