R36 Dtw Tune??

[SharifE]

HI GUYS...
Im lookin at en ECU tune..
Checking out DTWs tune looks impressive but when I saw graph, I was a bit surprised..IS IT TRUE THAT STOCK WE ONLY HAVE 132KW at wheels???

[Black R36 Sedan 09(alfie)]

The melbourne 36's are 140ish Kw atw from factory.. But then again.. The temperature when its being dynoed also varies the power reading.. so yea, its not that far off...

[pj's]

HI GUYS...
Im lookin at en ECU tune..
Checking out DTWs tune looks impressive but when I saw graph, I was a bit surprised..IS IT TRUE THAT STOCK WE ONLY HAVE 132KW at wheels???

SharifE, I think you mean DWT. Those results were from my car and in original 'tune' it only delivered 132KW ATW. Alfie is correct to say the results vary a great deal due to atmospheric conditions. I also hastened to add I have yet to see any other dyno results of a 'standard' Oz R36. pj

[passatpout]

HI GUYS...
Im lookin at en ECU tune..
Checking out DTWs tune looks impressive but when I saw graph, I was a bit surprised..IS IT TRUE THAT STOCK WE ONLY HAVE 132KW at wheels???

That's probably about right. Most transmissions are about 85% efficient at best, and there's 2 of them between the flywheel and the wheels (gearbox and diff). That doesn't take into account other losses along the way, eg friction with bearings (small, but still there).

220*0.85 = 187kW, 187*.85 = 159kW.

Take into account hotel load (ie power used that isn't for propulsion), so things like AC, power steering, electrics, and variations with temperature, fuel quality, build quality (there'll be an allowable tolerance on power output from the factory, assuming they're testing under the same conditions, probably +/- 10%).. could quite easily be 132kW at the wheels.

Just remember, though, that the thermal efficiency of an engine means that around 2/3 of the energy in the fuel is lost before it's even hit the flywheel, roughly a third through the radiator and a third through the exhaust.

Cheers...

[Treza360]

The Haldex AWD system has a fair chunk of drivetrain loss from the flywheel. Not sure what it is for you guys with the latest Haldex generation but the one in my car was around 30%. The Gen2 might be a little better but I wouldn't imagine it would be too much.

To put this in comparison, the last stock WRX I saw dynoed with its' full mechanical AWD lost around 25%.

From what I've seen and read FWD is around a 15% loss, RWD is about 20-25% and AWD is around 25-30%.

Cheers,
Trent

[ron]

130-odd KW does not look much, but who cares if they goes like a shower of ****!
numbers do not always mean everything.

consider stock rex run 125-145KWatw, and our R36 are much quicker.

[SharifE]

SharifE, I think you mean DWT. Those results were from my car and in original 'tune' it only delivered 132KW ATW. Alfie is correct to say the results vary a great deal due to atmospheric conditions. I also hastened to add I have yet to see any other dyno results of a 'standard' Oz R36. pj

Hi Alfie, are u happy with ur tune??Any issues??

[Black R36 Sedan 09(alfie)]

I am very happy with my tune mate.. No problems with it... Done 15,000km's since the tune and the car is running smoother than factory.
Check the tune out: www.evolve-technik.com.au

[Lance B]

I am very happy with my tune mate.. No problems with it... Done 15,000km's since the tune and the car is running smoother than factory.
Check the tune out: www.evolve-technik.com.au

How much was the ECU upgrade?

[Black R36 Sedan 09(alfie)]

I can't remember mate..
Drop them (Evolve) a line and ask..