Have a 2009 jcw clubman.
Mods:
Helix intercooler
K&N filter
Noise maker delete
Mario Kart downpipe
Manic stage 2
Upgraded engine mount

I'm looking for the next mod to give more pop in the drive.
sprint booster?
pulley?
aquamist?
Injectors?

Please let me know. Haven't worked on the car in awhile and miss making a change.

 

I would skip the mods on your list, they are worth the money, in my opinion. What are you looking to improve? Handling? Performance? Style?

I have similar mods on my Clubman, and here is my short list:
Milltek or Magnaflow exhaust?
Rear sway bar?
Coilovers?
???

 

After improving reliabilty, my primary objective for mods is to improve driving fun. My Clubman is my daily driver, and I use it for autocrossing and an occasional track day, so I can justify almost anything.....at least without considering the cost. Some mods that I've enjoyed include a short shift kit (I run CravenSpeed), shift **** (have Doug Whalen and CravenSpeed), and an improved diverter valve (GFB DV+ here - will not add HP, but maintains boost when off and back on the throttle).

Some of my other mods include:

FMIC - Alta
CAI - JCW Kit Intake (my '09 JCW didn't come with it)
Turbo Hot Side Muffler Delete
Noise Maker Delete – N18 Pipe
Lower Engine Mount – Powerflex
Dual Oil Catch Cans – BSH
Turbo Inlet Tube – Alta
Clutch Interlock Delete – Code My Car
Clutch Stop – BSH
Accelerator Pedal Back Pressure Enhancement – Fabricated
Hood Scoop Air Diverter – Sneed4Speed
Turbocharger Blanket – WMW
Turbocharger Heat Shield – NM Engineering
Front lower control arm bushings – Powerflex
Front Sway Bar bushings – Powerflex
Front Understrut X brace – TSW/WMW
Brake Cooling Ducts – Fabricated/Sneed4Speed
Shocks – Bilstein
Springs – NM Engineering
Adjustable Rear Lower Control Arms - Hotchkiss
25.5MM Rear Sway Bar – Hotchkiss
Front Strut Brace – CravenSpeed
Fixed Camber Plates – Ireland Engineering

 

what is clutch interlock delete?

 

The clutch interlock delete is my description for eliminating the requirement to push the clutch to the floor to start the car. I don't mind having to do that, but I didn't like the extremely long clutch throw. Eliminating the interlock enabled me to put in a the clutch stop with many more spacers than I could have otherwise.

I think I became sensitized to long clutch throws when I drove my '03 330ci....it had clutch pedal travel out of a '55 GMC....

 

It allows you to start the car without pressing the clutch pedal.

 

can't you just turn off this requirement to depress the clutch to start the vehicle using NCS Expert like you can on BMWs?

 

Yes, NCS will do that. I had Code My Car do it years ago. This is a two stage mod - delete the clutch interlock and then put in a clutch stop to reduce the length of the throw. For most people, this isn't a high priority. I guess I'm fussy about ergoonmics.

 

I will have to continue reading about the removal of the CLutch Interlock delete mod (to reduce clutch depressing distance - tho I'm not sure why that matters as the clutch needs to be pressed a certain distance to unlock the gears)g.

I have installed a Sprint Booster V3 and LOVE how the Sport mode (Leve 7 and higher) makes my shifting my manual more fun and smoother.

 

I recently installed a clutch pedal stop based on feedback from @njaremka that just reduces the amount of pedal throw before it hits bottom. I didn't install it for performance per say, but to limit over travel of my pedal. But it is much nicer https://www.ecstuning.com/b-burger-m.../jbclutch~bum/

 

If you install a clutch stop to eliminate the dead pedal travel AFTER the pedal is depressed enough, and you no longer hit the clutch switch, the car won't start.
So you either find a way to space the switch or disable the interlock to use a clutch stop.

 

Right, the gears engage at a higher point than the Clutch interlock so unless you only space it a little bit, you're pushing the pedal far enough to change gears fine, but not far enough to the start the car.

 

When I installed my clutch stop, I only used enough of the rubber washers to make it just slightly higher than stock. I still have full functionality of the interlock switch.