Hi.
I own an Autech S14. But I'm guessing you own an Autech S15 for they are more common.
The only problem I can see with an imported Autech S15 is that it's tuned on such high compression (11.7:1) on Japans excellent grade fuel. I don't know what RON the fuel in Msia is, but chances are, you'll get some knock, and especially with the hot atmosphere.
Might be wise to invest in a full ECU that can control ignition timing as well as a/f. Other than that, their a good machine
Oh yea, difference between S14 and S15 Autech is... mines turbo....