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[spkrman]

Originally Posted by eTiMaGo

180-200WHP should be possible with a bolt on turbo and ECU tweaking, but that would really be pushing the limits of the stock internals...

Even with new rods and pistons, lowered compression ratio and more boost, I would see it hard to get more than 250WHP without the engine becoming an uncontrollably peaky little thing. There unfortunately is no replacement for displacement.

But we'll see, there's just so many unknowns at the moment. I'm sure this engine has been modded to the extreme and then some in Japan, but how can we access that sort of information?

tis a good Q... I'd like to know myself what has been/can be done with the 1nz.

175+ whp can be done reliably on stock internals... right now all we can really look at is what the XB/XA guys have been doing.