OcUK Rolling Road Day 14 @ PowerStation (Tewksbury) - August 4th 2012
- Thread starter Gibbo
- Start date
It's not anything to do with the gear changing.
Here's a guide Audi themselves have written for how to test Audi automatic transmissions on the MAHA dyno: http://www.maha.de/cps/rde/xbcr/SID-9CCF2353-A6562862/maha_internet/PruefanleitungLPS_AUDIe.PDF
The key quote:
All 'non-clutch' automatics behave in fundamentally the same way with regards to load-dependant losses, and as such all have to be corrected. Audi have done the work for their models, but there is no data for BMWs. You could use the Tiptronic figure for the 530d, and it'd be better than nothing, but it won't be correct.Audi/MAHA said:
You are better off using a dyno that is configured against a known variation between actual engine power output and measured power at the wheels for your model.
Last edited:
Soldato
gutted, just realised I am at a festival that weekend
You epic drop out!
Soldato
I'll step in.
With Clarkey's help this weekend, we got the new manifold on the daily and its running well.
Therefore, Gibbo, please add me to the running list
Soldato
Who wants to go out in a Vauxhall though?
Wouldn't mind going out in yours tbh - never been in one and they look hella fun
Soldato
Erm. I have a different car now!
Soldato
Ah yeah sorry, forgot to mention - it's a BMW 328i chav edition - first dyno for this one.
Soldato
Can I go back to being a spectator please?
Just don't see the value in running again, not when the car hasn't changed since last time, and its already had 3 runs at powerstation! It's not like we are short of numbers this time either it seems...
I'd rather put the money towards the track day...
Just don't see the value in running again, not when the car hasn't changed since last time, and its already had 3 runs at powerstation! It's not like we are short of numbers this time either it seems...
I'd rather put the money towards the track day...
Soldato
Thought it was ~180bhp at the last RR Will?
Soldato
Had wheel spin in 4th today at 60+mph. Hopefully it's power is ok now. 
Soldato
It's had the following runs at Powerstation, car spec first...
MP185 - 194bhp (at the first OcUK RR I took it to)
MR200 - 201bhp (separate power run done by Rich at powerstation some months after I'd had the car upgraded to 200 spec, which meant a changed map, new inlet manifold and slightly bigger throttle body)
MR200 - 194bhp again at the most recent RR day (disappointing number, though torque was up a useful amount, but there are some reasons it could be low, given my tyres were all 4-5psi down on normal as I'd been lazy, and it was a very cold day so apparently the map might have been running a bit richer to compensate...)
Soldato
Sure do, I'll post them when I get home this evening. Don't laugh at my 25% transmission loss though.
