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Some of this week's Letters to AutoSpeed!

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Still More Power?!

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In relation to your Over 300hp Per Litre article, there is a member from SDU (skylinesdownunder) that currently owns an earth shattering RB26DETT engine. It currently makes greater than 1000kW on 3 Bar boost. Look at his website for proof on this claim and email him at I think you'll find his car will be the fastest GT-R in Australia very soon! I also think his car is the most powerful in Australia at the moment - and there's even more power to be extracted from his engine. I hope you can change the facts and make the 2000+ members of SDU and SAU (skylinesaustralia) happy!


Skyline Fan Pete

I've Seen it Too!

After reading your GTR story this edition, you may be interested in the Sydney based beast at It certainly puts out a bit of grunt, and quite a bit more than the one referred to in your story. Not insulting anyone - quite the reverse. I love seeing guys these guys going right over the top.

Keep the stories coming. Great E-mag!

Mark Parsonage

And Word from the Man Himself...

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Quote: "...this is the most powerful GT-R engine ever bolted together in Australia; if anyone can out-do this, by all means send us your graph taken from an engine dyno!"

Okay, I'll bite: I can supply you with a Dyno Dynamics printout of my GT-R using a measly 2.0 Bar of boost and showing over 636kW at all four wheels. That's a real power at the wheels figure - no dodgy compensation, bull?(&^ 'shootout mode' figures or guestimations. I think you'll find this equals 'slightly' more power at the wheels than the engine featured - on lower boost and with less displacement. And, yes, the motor was proudly built in Australia by Australians.

If I showed you the 3.3 Bar engine dyno video, it'd make you cry...

Mario of

Okay, so it seems there is a GT-R in Australia with more mumbo than the Nizpro engine we featured. Mario (of owns a R33 Godzilla with - in short - a 'fully built' 2.7-litre bored and stroked RB26 running custom cams, MoTeC M800 ECU and twin modified Veilside/SPL GT-3540 turbos with dual external 'gates. For a more comprehensive rundown, visit the aforementioned exvitermini web page.


I just want to know if it is possible to wire an Autronic SMC computer to a LT1 350 Chev? Thanks

Graeme Burke

The Autronic SMC is a 'universal' type programmable computer. It can be configured to manage your LT1 engine (perhaps with some slight changes to the ignition pick-up), but any such conversion is quite complex. At minimum, the car's existing loom will require a cut-and-shut to incorporate the SMC. Also, be sure to talk to the installer or distributor in regards to what standard 'ancillary' driving features you may lose - such as cruise control where fitted.

Soggy Rex

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I was just reading your review on the current Subaru STi and got to thinking. With all the problems the STi has with its low-down performance, what of the standard WRX?

Is the standard WRX simply a lower spec version that has all the faults of the STi, or is it a totally different beast all together?


Darren Smith

Both the Subie STi and WRX are weak when driven off-boost and at low rpm. Compared to the STi, however, the current WRX feels a lot punchier down low since has a relatively small turbocharger and newly shortened gear ratios. Still, when you catch it off-boost it's not all that happy.

The two cars drive quite differently - for our money, the WRX is a better everyday streeter (since it's more responsive), but the STi is the pick for all-out performance. The STi's biggest advantages are its big brakes and trick diffs. Note that - we're told - the STi's bottom-end performance can be improved dramatically with some aftermarket tuning.

Family Focus

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Thanks for the upgrade story on the Holden Supercharged Six. It was clearly written and well photographed. It was also good to see the focus was on drivability and sustained performance rather than peak power. It is something to consider for the future development of the family car!

Simon Ayres
Murdoch Australia

We're glad you liked the focus on drivability. We reckon too much weight is given to peak power figures these days - there's no point having a mega-power car if it's crappy at everything except WOT performance.

Detonation Blues

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I have a Honda car using the D15A SOHC VTEC engine and there is a problem regarding fuel RON in place where I live. Some gas stations mix 87 RON fuel with kerosine (or any other liquid), which causes a lower effective RON.

I tried retarding the ignition timing, which reduced knocking but power was also reduced. I then advanced the cam gear to get a better performance to low rpm. Unfortunately, advancing the cam gear causes my engine to detonate at low rpm.

It seems adding fuel treatment (octane booster) cannot be avoided - and I will do it. I am curious, however, why advancing cam gear caused knocking at low rpm. I hope you would give me an explanation. Many thanks for your help.

Awie Sutrisno

Advancing the cam timing obviously increased your Honda's low rpm peak cylinder pressures beyond the limits of your fuel octane. Be careful of the full effects of altering camshaft timing - depending on the car's ignition arrangement, spark timing may also be changed simultaneously.

One option for you - apart from adding octane booster to each tank of fuel - is to install a quality water injection system. This should reduce the engine's tendency to knock.

RDS is Where?

This site may be useful for you readers; it contains a list of radio stations transmitting RDS in Australia. Visit

Gary Sut

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