Quote:
Originally Posted by 3002 Tii
That's because there's such little aftermarket support for the n52 but check out the e90 NA section and you'll find some stuff for tunes.
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Worth mentioning in this context that, following some discussions on our E90Post sister site, several years ago I was one of the guinea pigs for an N52 tune from Gintani/OE Engineering. I was pretty happy with the results - about 10 extra hp - I posted dyno figures at the time. While there is some extra intake/exhaust work one can do I still think this is one of the few cost effective mods to increase power on the N52.
A side point also worth mentioning is that I just had my first CA smog check last week and the Z4 (with the tuned ECU still in place) sailed through with no problems.