Anyone with a diesel also got a U581 or U381 scanner? - Page 4

pondweed · 3rd December 2008, 07:00

I wonder if DOES do more than the 381, then? Thats great news - the first reported working occurence in a 75/ZT!

Be interested in the complete range of the figures given as you drove... and what you think is the thing we are after .i.e. should it rise a lot from idle, or should it be more constant? The lb/min (and conversion to kg/hr in the link further up the thread, along with the MAF graphs) and Rons MAF measurements from his site - no units! - dont really seem to "link" at all....

yp53 · 3rd December 2008, 09:50

I'll plug it in next time I'm out and about and exercise the right foot a little .... then note some results

s

pondweed · 3rd December 2008, 10:31

WELL, mine DOES read the MAF readings, so I guess this U381/581 version (mines v4.5) has been corrected, perhaps from Ron's earlier contact?
So if you have an earlier version, upgrade your software online from www.memoscan.cn!

I'm going to start a new thread for comparative live data readings for the diesel.

My MAF+MAFAM readings (lb/min) are 1.776 (idle) - 19.1 (4k revs + ish), with a new xpart £70 maf - i.e. the "replacement" for the Bosch - that doesn't work after 10,000 miles except with MAFAM on low, when it seems fine.

yp53 · 15th December 2008, 12:08

Finally remembered to take the 581 with me today and note some MAF readings (these are for yp53 - Nov 2003 CDTi Tourer):

Ambient air temp = 41deg.F / 5deg.C
Coolant temp = 180-185deg.F/ 82-85deg.C
Standard air intake & MAF
TU3B setting 5

First set is 'no load' (engine revved with car stationary)

650rpm (idle) : 1.718lbs/min
1000rpm : 2.4lbs/min
1500rpm : 3.6lbs/min
2000rpm : 4.75lns/min
2500rpm : 6.2lbs/min
3000rpm : 7.9lbs/min
3500rpm : 9.5lbs/min

Second set is under load (driving on level road) - these figures are approximate as a) they vary with load and b) I needed to watch the road as well

1000rpm : 2.4lbs/min
1500rpm : 3.7lbs/min
2000rpm : 5.5lbs/min
2500rpm : 7.5lbs/min
3000rpm : 9.8lbs/min
3500rpm : 12.9lbs/min

max at full throttle = 14.9lbs/min (standard air intake)
max at full throttle = 18.9lbs/min (intake duct disconnected from air filter housing)

pondweed · 16th December 2008, 07:52

I'll post these over into the comparison thread
http://www.the75andztclub.co.uk/foru...658#post263658

15th December 2008, 12:08	#34
yp53 Loves to post ex- Rover 75 CDTi Tourer Join Date: Nov 2006 Location: Timsbury, nr Bath Posts: 328 Thanks: 0 Thanked 0 Times in 0 Posts	Finally remembered to take the 581 with me today and note some MAF readings (these are for yp53 - Nov 2003 CDTi Tourer): Ambient air temp = 41deg.F / 5deg.C Coolant temp = 180-185deg.F/ 82-85deg.C Standard air intake & MAF TU3B setting 5 First set is 'no load' (engine revved with car stationary) 650rpm (idle) : 1.718lbs/min 1000rpm : 2.4lbs/min 1500rpm : 3.6lbs/min 2000rpm : 4.75lns/min 2500rpm : 6.2lbs/min 3000rpm : 7.9lbs/min 3500rpm : 9.5lbs/min Second set is under load (driving on level road) - these figures are approximate as a) they vary with load and b) I needed to watch the road as well 1000rpm : 2.4lbs/min 1500rpm : 3.7lbs/min 2000rpm : 5.5lbs/min 2500rpm : 7.5lbs/min 3000rpm : 9.8lbs/min 3500rpm : 12.9lbs/min max at full throttle = 14.9lbs/min (standard air intake) max at full throttle = 18.9lbs/min (intake duct disconnected from air filter housing) Last edited by yp53; 15th December 2008 at 12:18..

16th December 2008, 07:52	#35
pondweed This is my second home Waiter, Waiter! I seem to have a Roomster in my drive... Join Date: Nov 2006 Location: Sussex Posts: 3,268 Thanks: 0 Thanked 1 Time in 1 Post	I'll post these over into the comparison thread http://www.the75andztclub.co.uk/foru...658#post263658 Last edited by pondweed; 16th December 2008 at 07:54..

3rd December 2008, 07:00	#31
pondweed This is my second home Waiter, Waiter! I seem to have a Roomster in my drive... Join Date: Nov 2006 Location: Sussex Posts: 3,268 Thanks: 0 Thanked 1 Time in 1 Post	I wonder if DOES do more than the 381, then? Thats great news - the first reported working occurence in a 75/ZT! Be interested in the complete range of the figures given as you drove... and what you think is the thing we are after .i.e. should it rise a lot from idle, or should it be more constant? The lb/min (and conversion to kg/hr in the link further up the thread, along with the MAF graphs) and Rons MAF measurements from his site - no units! - dont really seem to "link" at all....

3rd December 2008, 09:50	#32
yp53 Loves to post ex- Rover 75 CDTi Tourer Join Date: Nov 2006 Location: Timsbury, nr Bath Posts: 328 Thanks: 0 Thanked 0 Times in 0 Posts	I'll plug it in next time I'm out and about and exercise the right foot a little .... then note some results s

3rd December 2008, 10:31	#33
pondweed This is my second home Waiter, Waiter! I seem to have a Roomster in my drive... Join Date: Nov 2006 Location: Sussex Posts: 3,268 Thanks: 0 Thanked 1 Time in 1 Post	WELL, mine DOES read the MAF readings, so I guess this U381/581 version (mines v4.5) has been corrected, perhaps from Ron's earlier contact? So if you have an earlier version, upgrade your software online from www.memoscan.cn! I'm going to start a new thread for comparative live data readings for the diesel. My MAF+MAFAM readings (lb/min) are 1.776 (idle) - 19.1 (4k revs + ish), with a new xpart £70 maf - i.e. the "replacement" for the Bosch - that doesn't work after 10,000 miles except with MAFAM on low, when it seems fine.