OCUK Rolling Road Day 9 - Its booked!
- Thread starter Phate
- Start date
You might want to add "No turbocharged automatics" to save any disappointment on the day.
It is extremely difficult to get a reading from these and the cooling fans cannot do a good enough job to ensure the longevity of the vehicle.
Anything with a Haldex transmission is also a right PITA
It is extremely difficult to get a reading from these and the cooling fans cannot do a good enough job to ensure the longevity of the vehicle.
Anything with a Haldex transmission is also a right PITA
Soldato
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- 14 Jul 2005
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This is completely off topic, but, why? 
Soldato
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- 2 Mar 2004
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Because you cannot get the majority of OEM automatic transmissions to hold in the desired gear to obtain a power run and/or decent results.
When you've got it up to speed and are ready to accelerate on the dyno, planting your foot down will result in the autobox kicking down in response to the demand for increased speed, thus making it difficult to ascertain any meaningful result from one.
It all depends on the operator, what equipment they have to hand, the dyno and how familiar they are with the car. Powerstation couldn't deal with my C4, for example - although they did seem to get it nailed on the last run but didn't generate any useful info 
When you've got it up to speed and are ready to accelerate on the dyno, planting your foot down will result in the autobox kicking down in response to the demand for increased speed, thus making it difficult to ascertain any meaningful result from one.
It all depends on the operator, what equipment they have to hand, the dyno and how familiar they are with the car. Powerstation couldn't deal with my C4, for example
- although they did seem to get it nailed on the last run but didn't generate any useful info The Haldex ?
To start with you have to pull the fuse for the ABS / stability control as there is no "off" button No biggy in that respect but in doing so it disengages the centre diff and allows it to run "almost" FWD.. trouble is, a little power still goes to the rear..
On the dyno you have FWD, RWD and 4WD, if you select FWD it confuses it as the rears still turn, if you select 4WD it virtually stops the rear wheels as the power loads up and then confuses it again..
Sorry Phate
To start with you have to pull the fuse for the ABS / stability control as there is no "off" button No biggy in that respect but in doing so it disengages the centre diff and allows it to run "almost" FWD.. trouble is, a little power still goes to the rear..
On the dyno you have FWD, RWD and 4WD, if you select FWD it confuses it as the rears still turn, if you select 4WD it virtually stops the rear wheels as the power loads up and then confuses it again..
Sorry Phate
![[TW]Fox](/data/man-of-honor/2009.png){kind=avatar}
Soldato
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- 14 Jul 2005
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- 17,616
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- Bristol
I was more thinking of the cooling, but interesting read none the less.
I have an irrational hatred and general amusement about how annoying Haldex is. No idea why
Soldato
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Am I the only one running a derv?
....and here....in the forum undergrowth....we see an early 2009 example of irony.
I copied that directly from one of Gareths threads
It's not really a rule...more of a guideline anyway
