Dave,
147kw is the same output as the current s14 200sx we get here, the 180kw s15 is
the higher spec Type R version with a six speed. The literature that I have
seen only shows the 147kw with 5 speed coming here. Although the nissan
australia web site shows the coming s15 as having a six speed, the papers have
reported it as a 5 speed?
I think optimax is pretty close to if not more than 100 RON. Premium unleaded
is 96-97 RON from memory so it would have to be higher to justify the price. In
any case the computer should back the timing off to avoid pinging on lower RON
fuels.

Luke Clough

David Andrews wrote:

> G'day All,
>
> I have a question about import S15 SR20DET's. The jap-spec/tuned S15 is
> rated at bout 187kW running on 100RON fuel. Nissan are releasing the
> aus-spec/tuned S15 soon and its supposedly rated to 147kW running 95RON
> fuel. Now what I am wondering is if I import the jap-spec S15 and run it on
> 95RON fuel will I be likely to only be getting 147kW out of it or will I
> just get a lot of detonation or a combination of these?
> What I am really after is an engine that will give me around the 180ish kW
> mark in stock trim, meaning no reduced engine life. So if i get the S15
> 147kW engine I won't be getting this performance but it'll be safe. But if
> I get the S15 187kW engine then it'll be trying to go hard but will be
> dying in the arse from the crappy fuel we've got?
> Comments/suggestions?
>
> Dave

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