Oh I expect the unexpected all the time... my point to the OP was, don't just change stuff without knowing what has gone... his pedal may well be knackered but there are several other things it maybe....

I'm pretty sure they carried on using the same throttle pedal as the later supercharged ones are plug and play to ours... changed a bulb on my mates late 3.6 the other day, the boot one and it still says BMW on the fitting so I think they kept some stuff...

But I am beginning to think we have a better made FF than the late ones, mine still has no external rust, a great tailgate etc etc.... Pete

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2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

I wouldn't change anything, I'd be making the persons who have already been paid to do the job change it, for free. And if they try that line 'wear and tear' I'd be asking why they haven't failed on the 2002 model That will put the cat among the pigeons

Pete, next time you are near a newer L322, tap the tailgate, were it says Range Rover, with your finger nails and then do yours, and when you've picked yourself up.... tell me which is better

And lets face it, just because it looks the same and does the same thing, doesn't mean that it's built to the same standards... I personally recon that there was a lot of cost engineering done on the later L322's, and while they are better in performance and spec than the earlier cars, I do wonder as to their longevity  Yesterday I couldn't spell Engineer... Today I are one!
Inventor of the 'Guide-o-Matic automatic wheel alignment tool'
Former long term L322 owner, Up/Down graded to a Classic Tractor!

Fretless, the problem you describe is different to the OP, having read your post it would appear that there may be a TSB which covers a throttle hesitation on the 4.4, AFAIK it involves a software update to the powertrain control module, which changes the injector software. Might be worth checking with the dealer LTB00054v2. There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
Fiat 500x 1.4 multiair Lounge 2015
2010 LR D4 Commercial 2.7 TDV6

NMJ, thanks for this info ! Hopefully that'll nail it, will get to it soonish and let you know the outcome - it can be a bit vexing at times

miggit, all that switch cleaner spray I've used over the years delayed recovery of the ozone layer by decades
Best amp I've had was a Trace Elliot

Still want those pedals though...  The best 4.4 x far

Wah Wah Wah

Fender Twin for me baby Although it's gone traded it in for a motor bike  Yesterday I couldn't spell Engineer... Today I are one!
Inventor of the 'Guide-o-Matic automatic wheel alignment tool'
Former long term L322 owner, Up/Down graded to a Classic Tractor!