Figure Guess....

[maccavvy]

Off to the rollers tomorrow as I don't have a number ..
Its an 04 cv8 with the larger 05 intake pipe, defillipo headers and x force exhaust
Was fitted with a focus pack 10 years ago.
62k miles with fsh

Ideas ???

[jameshsv]

maccavvy said:

Off to the rollers tomorrow as I don't have a number ..
Its an 04 cv8 with the larger 05 intake pipe, defillipo headers and x force exhaust
Was fitted with a focus pack 10 years ago.
62k miles with fsh

Ideas ???

325rwhp

[M11 MFP]

305 rw

[TheLeatherman]

Less than 300 rwhp if it is a true dyno and the car is untuned..............what is a focus pack????

[snowwolf]

All RRoads are very different with figures, I have a figure of 637 at a RR that is not used by HSV/Monaro's but at Surrey Rolling Road it came out at 628 both at the fly btw

[TheLeatherman]

snowwolf said:

All RRoads are very different with figures, I have a figure of 637 at a RR that is not used by HSV/Monaro's but at Surrey Rolling Road it came out at 628 both at the fly btw

How does a dyno measuring power at the wheels give a true figure at the fly though???? That's why in Oz we only ever quoted rear wheel power, unless the engine was taken out and put on the engine dyno to get a true power at the fly.

Edited by TheLeatherman on Friday 20th March 23:28

[ARAF]

TheLeatherman said:

snowwolf said:

All RRoads are very different with figures, I have a figure of 637 at a RR that is not used by HSV/Monaro's but at Surrey Rolling Road it came out at 628 both at the fly btw

How does a dyno measuring power at the wheels give a true figure at the fly though???? That's why in Oz we only ever quoted rear wheel power, unless the engine was taken out and put on the engine dyno to get a trie power at the fly.

On a manual, I think they just dip the clutch, and see how quickly the wheels slow down to calculate the transmission power loss. No idea how they do it for autos.


My answer to the OP is that it really doesn't matter what it makes, and dyno runs cause more heartache than happiness. If you think it's fast enough, that's all that matters. If you don't, then get modding. It doesn't matter on the dyno, or even on the strip, as for most of the time, your car will be at partial throttle on the road.

[maccavvy]

Im only taking it cos I have the day off and wanted something to do.
plus im interested to know the difference between lpg and petrol.
It drives amazing but a number to put to it would be nice.

http://www.monkfishperformance.co.uk/wortec-focus-...

[vxr2010]

321 rwhp

[TheLeatherman]

OK if it has a tune in the focus pack then really you should be seeing 330 rwhp at least. Will be interesting to see I guess!!!!

[vxr2010]

At Srr on same spec car 320 to 323 is about normal and as a lot of club members use it I trust the figures as much as you can

[blue666uk]

maccavvy said:

Im only taking it cos I have the day off and wanted something to do.
plus im interested to know the difference between lpg and petrol.
It drives amazing but a number to put to it would be nice.

http://www.monkfishperformance.co.uk/wortec-focus-...

Do let us know as well, I have the tune one down from you but essentially most of the same upgrades, but would interesting to see what the difference is between petrol and LPG as well. I reckon about 10-15% power deficit, on mine, but would be good to hear.

[maccavvy]

well that was fun... never heard my car from 5 yards at 125 mph ...

heres the 2 graphs.. lpg and petrol im amazed how little it uses.

Edited by maccavvy on Saturday 21st March 11:18

[ARAF]

I'm amazed. They're identical, so think you may have put the same one up twice.

[maccavvy]

just seeing if anyone noticed ...

[snowwolf]

Like Araf said above, you can have loads more BHP than someone else and you will be slower on the strip but rolling road days are good fun and a good get together too, my Surrey rolling road figures at the wheels were 496 in Dec 2010 and then 498 18 months 15k miles later only mod was a Rotofab air intake so seems quite consistant.

[ARAF]

maccavvy said:

just seeing if anyone noticed ...

As a comparison tool, the dyno is brilliant for tests like this, and as you say, LPG makes very little difference.

[M11 MFP]

11.5℅ drive line loss and torque / power intersect not at 5252 rpm. Something is not quite right!

[ARAF]

M11 MFP said:

11.5? drive line loss and torque / power intersect not at 5252 rpm. Something is not quite right!

Forget the driveline loss, it's of no significance. The rear wheel figure doesn't rely on that calculation.

As for the power/torque crossing point, the scales aren't the same.

[M11 MFP]

Ah yes, didn't notice that. Why the hell they aren't on the same scale lord knows. The torque distribution is much easier to interpret at a glance that way. Fwhp estimates may be for the most part balls, but why include them if they come out as wildly inaccurate as these clearly are?