I had a mapped c320cdi previously and planned to replace it with a 335d. But when I drove the 335d I found the power delivery to be a little too linear. Yep undoubtedly fast (well marginally quicker) but not as fuel efficient and not exciting.
Drove the 335i and was blown away by the noise and power delivery - very similar output to the diesel but totally different experience.
With the mods I have now there is more torque than a stock 335d, lots of power and even more noise. When getting on it down a back road a petrol cars character will win hands down for me..
Driving 20k a year, I recon i spend less than a grand more fuelling the i than would the d... Which I can swallow for the occasional fun days!
Car: 2010 Jaguar XFR (Cat-back exhaust)
Gone but not forgotten: Highly Modified E90 335i LCI M Sport Manual (circa 480BHP/500lb ft)