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Originally Posted by DSC_OFF
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Originally Posted by -c-
You don't want to do that. Technically the n52 should not be force fed. Not strong enough .... Sure people have done it but not sure what the long term results show.
I had fun tuning my I to SI spec but that's about all I can go if you have an SI you can tune it to get maybe another 10 HP or so but that's about it.
On the other hand theirs plenty of suspension, brake and wheel mods you can do..... Also you can always play with your rear diff to give you the illusion of another 25 or 40hp 
I've done plenty to mine and its the lowest Z4 on the totem poll post facelift. |
here's one example of a sc'd n52 lol
http://www.e90post.com/forums/showthread.php?p=11053868 |
Lol, I always wondered about that company.
OP - Maybe you could make up your own kit running ~4 psi with a small blower. There are probably tuners that would tune it (use google). I wouldn't expect more than 320-325 hp though, unless you swap cranks with an N54 (not sure if this is even possible). Even then, you're treading in dangerous waters, and the cost of pushing the limit too far is expensive...