Dyno Query

[boyley]

I had the Calais Dynoed today, and am not sure of what to make of the result. The car was lifting up quite a lot under load so they strapped it down more. Even after that it lifted a fair bit. Could that affect the output? Also two stock VE 6L Manuals returned 246kW/248kW respectively.

Sheet attached, comments please?
http://i256.photobucket.com/albums/hh166/boylero/VEDYNO1.jpg
http://i256.photobucket.com/albums/hh166/boylero/VEDYNO2.jpg

[VooDoo]

Intake temps lower than ambiant?? Thats a nice trick.

You power is falling over from around 5000rpm. Its either the tune or valve springs although the VE ones have been better than the older VT/VZ range

[boyley]

Intake temps lower than ambiant?? Thats a nice trick.

You power is falling over from around 5000rpm. Its either the tune or valve springs although the VE ones have been better than the older VT/VZ range

Just noticed the temp thing that might explain the big O/p's all day, apart from mine of course:nopity:

[35R]

do you have a tune done? looks a bit rich. Definitely quite a bit left on the table there.

[SSUte01]

What power were you expecting and have you managed to go down the quarter by chance?

Dynos aren't always truly representative in my findings

Also which gear was it dynoed in?

[boyley]

do you have a tune done? looks a bit rich. Definitely quite a bit left on the table there.

Yes I have a tune and the tuner told me it would be rich on the dyno.

What power were you expecting and have you managed to go down the quarter by chance?

Dynos aren't always truly representative in my findings

Also which gear was it dynoed in?

I was expecting around 225kW but the result is high, I reckon it was about 210kW. I will have it down the 1/4 on the 30th August.

Yes I have never used a dyno before because of such variables but thought I'd give it a go as it was a dyno day. Its actually my wifes car and she won Top Female..........did I mention there were no other females there lol

[Delft Maloo]

id say thoses results of the other 2 ve's are a bit optimistic if they are stock cars.

i would have thought yours would have made a little higher but that does depend on alot of things,eg temps,gear,dyno ramp rate ect. The afr's look a little rich on the run, there is normally a difference in road afr's and dyno afr's but its not usually too big if both afr meters are calibrated. yours being 12:1 afr looks damn stock, my vess stock commands 12.7 afr and isnt to far off on the road untuned. i would have expected any where between 12.6-13.0 afr for your modded tune.

[35R]

250rwkw does seem too high for stocker VE's. LUXO maybe your rwkw number is a bit high too but the AFR's on the chart seem a tad wonky and definitely too rich (even compensating for road vs dyno). Then again maybe all the numbers are in question given this. Were the AFR's the same as this when tuned? Anyway as ever MPH will tell 90% of the real story i guess.

[boyley]

250rwkw does seem too high for stocker VE's. LUXO maybe your rwkw number is a bit high too but the AFR's on the chart seem a tad wonky and definitely too rich (even compensating for road vs dyno). Then again maybe all the numbers are in question given this. Were the AFR's the same as this when tuned? Anyway as ever MPH will tell 90% of the real story i guess.

No the AFR's were spot on when tuned, we did it with wide band o2 sensor.

[Delft Maloo]

No the AFR's were spot on when tuned, we did it with wide band o2 sensor.

so you are saying that they tuned the cars wot for the afr thats on the graph or that it was tuned correctly befor but on this run this is the afr that has shown up?

[SSUte01]

Did I read correctly that you recently bought your own tuning solution. If yes, good decision and best of luck with it all, once you get yuor head around it I think you only see more and more gains. Keep us up to date with your progress :)

Dynos are a great tool and I wish had my own but they definitely are not the be all and end all when it comes to comparative performance.

Enjoy :)

[boyley]

so you are saying that they tuned the cars wot for the afr thats on the graph or that it was tuned correctly befor but on this run this is the afr that has shown up?

Sorry mate sounds confusing now that I read it.

History- Car wide band tuned in NSW in March 08 by Steve Bennett

This dyno was performed in Tasmania without wideband sensor fitted.

Cheers Rob

[boyley]

Did I read correctly that you recently bought your own tuning solution. If yes, good decision and best of luck with it all, once you get yuor head around it I think you only see more and more gains. Keep us up to date with your progress :)

Dynos are a great tool and I wish had my own but they definitely are not the be all and end all when it comes to comparative performance.

Enjoy :)

Yeah thats right mate I am tuning my LS1 ute first. Will leave the VE to the experts for a while.

Am fittting the extra O2 sensor socket this week and installing the wideband sensor and PLX guage permanently.

Then its off to Autove adventures.

[Delft Maloo]

Sorry mate sounds confusing now that I read it.

History- Car wide band tuned in NSW in March 08 by Steve Bennett

This dyno was performed in Tasmania without wideband sensor fitted.

Cheers Rob

if steve tuned it then id say it probably is right then and that the wide band for the dyno in taz is off alittle. I have personally seen differences between my wide band and the wide band on dynos being between .5-1 afr off the same reading on the same dyno run. when i put the ute on in the national dyno comp in qld the afr's on the dyno sheet showed 10.9-11 afr on bob romano's dyno but my wideband recorded 11.8-12 afr, well yes my W/B might be out and there's should be close to right youd think but no! 2 days later i ran the ute up at hi torque and both our W/B's were within .2 afr of each other the whole time and then 2 weeks later on castle hills dyno mine again matched there's of about 11.8-12 afr.

[Chris@Russo]

If two stock VE 6L manuals made around 246rwkw on this dyno which is reading at least 25rwkw more then on our mainline dyno, which backs up track times. Then what power do you think your Calais is really making?

We see around 200rwkw VE 6L A6 standard which at the track runs around 100mph. if you have 225rwkw you should see 105mph. Dynos are a great tuning tool but the drag strip will show you your real power in the mph.

[boyley]

If two stock VE 6L manuals made around 246rwkw on this dyno which is reading at least 25rwkw more then on our mainline dyno, which backs up track times. Then what power do you think your Calais is really making?

We see around 200rwkw VE 6L A6 standard which at the track runs around 100mph. if you have 225rwkw you should see 105mph. Dynos are a great tuning tool but the drag strip will show you your real power in the mph.

Yeah look the Calais had no mods when the tune was done. I wasnt expecting a huge number. But comparing the drive feel between my ute and the Calais, the Calais would go close to the low 13 the ute ran a few months back.

Cheers Rob

[VXGTS]

Intake temps lower than ambiant?? Thats a nice trick.

You power is falling over from around 5000rpm. Its either the tune or valve springs although the VE ones have been better than the older VT/VZ range

Excuse my ignorance, but what advantage can be gained by the dyno set with the intake temp lower than ambiant. I thought that since they whack a big fan infront of a car when being dyno'ed the intake temps would be close to the ambient? Just curious?

[nqcv8]

Excuse my ignorance, but what advantage can be gained by the dyno set with the intake temp lower than ambiant. I thought that since they whack a big fan infront of a car when being dyno'ed the intake temps would be close to the ambient? Just curious?

Well as a higher intake Temp inflates the power figure, a lower intake temp would reduce it.