Dyno tune, Should've done it along time ago

Gday Luke,
My last GQ 4.2 had a rear wheel output of 44kw..
After fitting an MTQ Turbo it produced a rear wheel output of 77kw @ ½bar of boost or 7-8psi,,,,......

Hi Luke , can I ask where Hitech diesle is located?

Cheers J.B.

Luke,

Interesting figures. I am thinking of getting my diesel pajero dyno'd after fiddling with boost and exhaust.
From what I can work out on those figures.
AFR of 30 is obviously 30 parts air to 1 part fuel. Not sure if it is volume or weight. A petrol engine usually runs at 13 to 15. You know have an AFR of 20. I assume the amount of air going in has not changed , i.e. boost increased? Then they have increased the fuel so you are getting more fuel in the air, now 20 parts air to one part fuel.
More fuel, more bang, more power. As long as it is not blowing smoke, since it is more likely now. But worse fuel economy on full throttle :o(
55 to 83 kw is actually 50.9% better, not 100% :o)))).

Was looking at some 4wd porsche turbo (996) figures the other day, a little tweaked, and it was getting 330kw at the wheels. But it doesn't have low range and enough clearance for what I want to do, so I had to dismiss it. Tweaked STi's and EVO VIIIs are about 200 to 220kw at the wheels. Just thought I would mention it so you don't get too carried away on the bitumen dragging other people off. Know the feeling though.

Hi Luke,

I have similar sentiments regarding the dyno tune. Mine went from the standard 66kw the factory delivers to an end result of 126kw at the rear wheels. This has needed the turbo to be upgraded an intercooler added and plenty of fuel and boost added. It runs to a max of 14psi but I don't know the air fuel ratio. Dyno chart is on my rig page. Longevity of motor has been OK so far and with 315000km on the dial it should be showing if there was to be any probs, I would think.

See you at Warraweena.
Trevor.

Got a bit more to go Luke :-)
Trevor's ( Trevor R Bris ) 99 4.2 GU with over 300,000k's put out 125kw at the rear wheels, around 160kw at the motor, also has the MTQ turbo.
Not trying to be a smartarse or anything, just pointing out what can be achieved is all.
Keeping in mind when you're playing with diesel's you should really be concentrating on torque not horsepower as this is what diesels work on, HP figures will generally be quite low in diesels, when you go modifying them you're chasing torque, the more torque the better.

Cheers
Pezza

I use the think you couldn't mess with anything that had an ECU. Especially dyno tuning.

Well I've been proved wrong. Had our 95 series Prado TD dyno tuned at Brisbane Tuning and Turbo after I had a mandrel 2 3/4 inch mandrel exhaust fitted. Seems they cause the engine to run too lean.

I already had a Dtronic and ditched the Hiclones.

The tune alone provided 3.7 Kw and 24 Nm improvement.

Power improvement all up over standard is now around 22% (88 kw at the rear wheels for a 4 pot 3 litre old technology engine!).

i want to get our cruiser dyno'd while in brisbane, can anyone reccomend where and give me an idea of how much?
Crawf

No one has mentioned exhaust gas tempertures. To me this would be the most critical measurement. No use in getting a torque/kw gain at the expense of excessive egt`s. Regards G.T.