[LS3] Is the Euro 5 VFII affected by detuning... is it 304?

[monstar]

Interested to flesh out whether the detuned Euro 5 LS3 fitted to the VFII SS has the same measured (dyno) output as VE (HSV, CSV, VXR, GXP) LS3 at 317 and 325, or even the HSV SV340.

The final factor of boot badge divided by 1.27 holds true for all variants except the Euro 5, where the best calibrated evidence shows ~220 rwkw which, multiplied by 1.27 is not 304, as claimed in the sales brochures. The output correlates to that of the VEII, which has a 0-100 of 5.4s versus 5.3s of VFII which is fitted with shorter diff gears.

So, let's see if we can reach a consensus. No opinions please, only post dyno results which are verifiable.

Third gear pulls and charts not showing derived RPM method are of course good for nothing.

 

[monty_vfssv]

27% = auto.. bugger can't comment.

 

[monstar]

27% = auto.. bugger can't comment.

If the dyno test was properly executed to a known standard in 4th gear with actual engine RPM derived torque then is all good input, right?
Let's see something!

 

[PeteSS]

I'll play the game.

This is a dyno test between VF11 SS and a 340kw HSV LS3.

if we use the 1.27 rule, the HSV was nowhere near where it should be . incidentally neither was the VF2.

What it does indicate is a 20rwkw difference between the two. So if Holden is telling porkies, then going by these particular readings, so is HSV

 

[monstar]

I'll play the game.
This is a dyno test between VF11 SS and a 340kw HSV LS3.
if we use the 1.27 rule, the HSV was nowhere near where it should be . incidentally neither was the VF2.
What it does indicate is a 20rwkw difference between the two. So if Holden is telling porkies, then going by these particular readings, so is HSV

That does show exactly that the Euro 5 VFII makes less than the Euro 4 HSV 340 - on this scale it makes 20 rwkw more. However although the comparison is valid to demonstrate a clear power difference between the two tunes, for the final result to be accurate the pull would have to be in fourth gear.

 

[monty_vfssv]

Not my car.

Vf2 auto, 4th gear pull - stock(242kw) vs CAI(284kw)

 

[monstar]

Not my car.
Vf2 auto, 4th gear pull - stock(242kw) vs CAI(284kw)

There's no information stating parameters, correction or atmo conditions? Without that it's a couple of lines plotted!
What diff ratio gets you 180 kph in 4th gear?

 

[monty_vfssv]

There's no information stating parameters, correction or atmo conditions? Without that it's a couple of lines plotted!
What diff ratio gets you 180 kph in 4th gear?

Yeah true.. not my car so left out the details.

So are you trying to say the vf2 only has 280kw at the engine?? Wouldn't surprise me with how doughy they are stock. But with basic mods the ls3 is always up 20-30 odd kw on the vf1.

If my stock vf2 was only 220kw at the rears, then I've picked up 80kw with just a CAI, exhaust and headers. Cant complain.

 

[monstar]

Actually trying to sort fact from a fair whack of hyperbole is all. Yeah, I must be the devil
Stock LS3 does not make peak power at 5400 RPM, rather 5900 RPM. Yet to see a stock VFII dyno showing peak close to that in fourth gear.

 

[monty_vfssv]

Actually trying to sort fact from a fair whack of hyperbole is all. Yeah, I must be the devil
Stock LS3 does not make peak power at 5400 RPM, rather 5900 RPM. Yet to see a stock VFII dyno showing peak close to that in fourth gear.

4th gear vf2.. Stock vs CAI