Yorkshire_Z4M40i
Member
I was wondering if anyone out there has looked at or undertaken any engine/performance modifications on their Z4's? I like the pace of my m40i, but it kinda of bugs me that I know the US market got more horsepower then we did in the UK... I think I'd like to tap into that extra fun juice if at all possible! 
I've been looking at what's available, but can only really see a few plug in chip type thingys (technical speak I know sorry), from the likes of AC Schnitzer and Race Chip. The former seems to be BMW approved, but cost around 4k. The latter is about £400, but not approved I'm guessing. I think the AC Schnitzer one also gets a warranty with it for three years or so, covering engine and drive train - I'm guessing that's how they came up with 4k haha.
Anyone got any thoughts or experience on tuneing/modifying thier car please?
Cheers
P.s. I did search the forum for similar threads, but didn't find anything. Apologies though if this type of question has been answered before and I've missed it. Ta.

I've been looking at what's available, but can only really see a few plug in chip type thingys (technical speak I know sorry), from the likes of AC Schnitzer and Race Chip. The former seems to be BMW approved, but cost around 4k. The latter is about £400, but not approved I'm guessing. I think the AC Schnitzer one also gets a warranty with it for three years or so, covering engine and drive train - I'm guessing that's how they came up with 4k haha.
Anyone got any thoughts or experience on tuneing/modifying thier car please?
Cheers

P.s. I did search the forum for similar threads, but didn't find anything. Apologies though if this type of question has been answered before and I've missed it. Ta.