0700700

first of all i would like to point you to the following two pages

218bhp: http://www.wetterauer.de/chiptuning/datenb...&diagramm_id=29
231bhp: http://www.wetterauer.de/chiptuning/datenb...diagramm_id=411
also here http://www.hs-elektronik.com/datenblatt-d/...31ps-500nm.html




i remember some one asking a while ago about the differences in the two cars and the new
engine if anything is quite remarkable, and the way the torque curve develops i would say
that it behaves pretty much like the 535d (here if you are interested)


anyways whats interesting is that all testing companies (dms, wetterauer, dgt_ch) claim that
the car actually produces in excess of 500nm...

DG_ch claim 531nm
Wetterauer and DMS: 520nm
HS: 545nm


If you think this varies with testing... well yes it does but you have to remember that the 4 reported the original 530d as varying between 490nm to 505nm... so the new engine IS VERY INTERESTING !



Also look at acceleration figures up to 100... independant tests state the 535d: 6.46s , the 530d: 6:64 seconds.. I have driven the new 530d (and the old one also) and the difference is large... I know i am not
a car magazine but i have had the two timed :

530d 218bhp -90% confidence interval at 6.9-7.2s
530d 231bhp -90% confidence interval at 6.5-6.8s



Anyways just wanted to let everyone know that the new engine is AMAZING ... not only that but at 1650RPM it produces 510nm, whereas the old one musters only 455NM... Taken with the evidence of an impending change in the 535d , i think this car is your best bet if you are considering a sporty bmw diesel

colejl

That'll be me then!

Merv the Derv

Interesting read! Were the 530d's auto or manual?

0700700

all of them auto cars, i dont drive manuals


its just ive spent 50% of the last year of my life in bmw dealerships and have tested a LOT OF cars (e90:320i/320d/325d/330i, e60:530d(both),535d,545i,523i 645 coupe and cabrio, 740d, 745d, 120d, cooper.. x5 3.0d and 4.4i) (in 2004 i tested m3 csl, x5 4.6is, 760li, z4 3.0i)
so i thought i would share some info with you guys...


Of course the 535d i tested was a demo car with 1830km so i cant compute reliable full
acceleration results from it, but the 530d were nicely run in cars (218bhp had 36000km, and the new 231bhp had 9000km)

from what i have seen i am convinced that the 530d can jump a 535d at the start... And besides the kerb weights for the new
engine are very good, its around 7 kg lighter, compare with the weight of the 535d ! (attached)

also the new manifold and modifications to the turbo, technically mean that the engine is freer to breath so we can assume
quite a bit less lagg

here judge the weights of the two cars, even one more plus for
the 530d... the 535d engine is very heavy as it is build on old technology
and also the 2nd big turbo doesnt help

OliverB

1. very expensive tuner !! (more than 1.000 ? !)

2. I would prefer an additional power-box clipped on the loom than re-chiping (no trace of ECU opening), to avoid problems of warranty...

3. Yes, more than 70kgs between 530d & 535d ... That's 4% more weight to move !

4. Approching 600NM, you should have an automatic gearbox. The clutch & the manual gearbox won't resist I guess ! :thumbsdown:

5. Is the gearbox final ratio still ideal with torque/power optimization ? Did you notice that 530d &535d have different ratios ?

P.S.B

hmm .. this is kinda off topic but does any one have a review of both the 530i

Merv the Derv

The 530d 231bhp model may be almost as fast as the 535d may be even faster up to say 50mph but there's no way with just the single turbo that its going to be anywhere near up to 100mph. UK Autocar timed the 218hp model at 19.4secs 0-100mph and 15.0secs for the 535d. An increase of 13hp just won't do it. As far as I was concerned the introduction of the twin stage turbo 3.0 litre engine was to give similar standing start performance to the 530d but with the added benefit of petrol type performance right up to the redline. I'm not trying to start a diesel war its just that in my experience when I was driving above 70mph in my 530d and accelerating through the gears the car felt out of breath whereas in the 535d with the same senario it feels far more rapid. 530d is still a fantastic car.

OliverB

YES of course, the twin turbo helps at high revs ! Of course the 535D is a little quicker finaly ... But the difference between 530D & 535D is not so great than between 525D & 530D. Both cars give a lot of pleasure !
But ... How many kms with rear tires do you expect ????

0700700

damn your right , the final drive ratios are clearly better on the 535d

colejl

Indeed, my 530d is great at the bottom end but acceleration is blunted at higher revs - I want that 2nd turbo!

However, we're currently comparing an updated engine with an original engine. Lets compare the updated 530d with the updated 535d when (if) it comes along...