Before and after dyno results on the 335i

There is no question about it, the M3 is a better car but to me its just not worth the extra over a 335i. If there was no 335i and only a 330i I would own a M3 now.

I drove from london to sheffield yesterday, average speed was 62mph I managed 36mpg which is not bad at all.

The only problem I have is that if I really put my foot down im struggling with traction on the rear wheels. I will replace the tyres with ContiSport 5p's which should help.
 
few heat questions here. Yes the N54 engine gets hot when tuned. So anything after 360 or so bhp it's really advisable to look at additional cooling, uprated down pipes are a big yes (my next mod) followed by an intercooler. you can run high bhp (close to 400bhp) without these, but obv it's safer with.

Another example of why I like the JB4 tune, you can jump to a higher power map and when it gets hot just jump to a lower one on the fly.
 
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