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[tidla]

Remember watching good old top gear where the boys got there hands on some classic Italian supercars from the 70s.
(Crazy owners).
One of the challenges was to see how much power the cars had lost from factory standard. The results were .. loads.

I wonder what the V6 would dish out  10 years later?

[bigegg]

mine was dyno'd at 225bhp in 2009, when it was 11 yrs old.
Dunno what it was "out of the box" in 1998, but probably less 

[Andy B]

mine was dyno'd at 225bhp in 2009, when it was 11 yrs old.
Dunno what it was "out of the box" in 1998, but probably less 

10% over stock? or an over optimistic dyno? 

[Field Marshal Dr. Opti]

Remember watching good old top gear where the boys got there hands on some classic Italian supercars from the 70s.
(Crazy owners).
One of the challenges was to see how much power the cars had lost from factory standard. The results were .. loads.

I wonder what the V6 would dish out  10 years later?

One of them, a Lamborghini Urracco ( I think) gave out 80 bhp at the rear wheels. Left the factory with  255 BHP.

[Field Marshal Dr. Opti]

mine was dyno'd at 225bhp in 2009, when it was 11 yrs old.
Dunno what it was "out of the box" in 1998, but probably less 

10% over stock? or an over optimistic dyno? 

How much do you lose at the rear wheels?

[bigegg]

mine was dyno'd at 225bhp in 2009, when it was 11 yrs old.
Dunno what it was "out of the box" in 1998, but probably less 

10% over stock? or an over optimistic dyno? 

dunno - was before my ownership, and I don't know what mods were on the car at the time (decatted perhaps?)
I just have the printout from "dyno demon"

[albitz]

Iirc around 30% is usually lost between flywheel and driven wheels.

[omega3000]

Remember watching good old top gear where the boys got there hands on some classic Italian supercars from the 70s.
(Crazy owners).
One of the challenges was to see how much power the cars had lost from factory standard. The results were .. loads.

I wonder what the V6 would dish out  10 years later?

One of them, a Lamborghini Urracco ( I think) gave out 80 bhp at the rear wheels. Left the factory with  255 BHP.

Yes i remember watching that , wasnt that mr clarksons  Shocking amount of power loss , wonder if redex would have increased its power 

[waspy]

mine was dyno'd at 225bhp in 2009, when it was 11 yrs old.
Dunno what it was "out of the box" in 1998, but probably less 

10% over stock? or an over optimistic dyno? 

How much do you lose at the rear wheels?

Around 25%

[2woody]

depending on how it's tested, you lose between 15 and 20 % througfh the transmission - anything up to twice that for an auto. Test in 4th for lowest loss ( 3rd for auto )

the "dyno" industry is a funny one. They're primary business is to give car owners bragging rights in the pub, and to that extent, I'd tentatively subtract 10% from their quoted figures. Owners doing significant development are generally wise to the above and only work on a before and after" improvement basis.

[Kevin Wood]

The only way to get a repeatable, let alone anywhere near accurate, figure from a rolling road is to do a proper coastdown at the end of the run to cancel out the losses. Not really worth bothering at all with an automatic gearbox IMHO. Even then, the rollers need to be regularly calibrated and maintained. As said, most are out to take your money and give you a "pub figure", so don't bother with accuracy. It's easy to fiddle it - so don't trust anyone you have paid to do tuning work for you.