M5 Dyno Result!! - The Unofficial BMW M5 Messageboard (m5board.com)

w8pmc · 8th June 2006, 23:08

Right, i've now had my M5 (DMS) run on a Dyno Dynamics RR (considered the best) at WRC down at Silverstone & the results off the machine are as follows.

In P500 Sport/M-Mode she managed 519.7HP at the crank & 405.9lbsft Torque
In P400 mode she managed 428.0HP & 348lbsft Torque

Now as you'd expect their would be some adjustment to take into account the very high ambient temperature (30+C) & according to WRC, the fact as they slotted my car on as a favour for a friend, they did not fully set-up the equipment as it had been running 500+BHP Evo's for the last 2 days & was not set up correctly for a high powered RWD car.

According to the engineer who ran my car, his adjusted figure would be 554BHP & 429lbsft in P500 mode & 449BHP & 363lbsft in P400

I'm sure the doubters will still doubt & fair play, however not only are Dyno Dynamics considered to be one of the most accurate RR systems, they also if anything give under the bar figures, not the over optimistic ones you get from some RR's. Also this particular company (WRC) & the RR my M5 ran on, is the exact machine that the well know UK Publication EVO magazine use for all their tests, so i'm happy that the results they've given me are as accurate as i'm likely to get.

To also further this point, the co-owner of the adjacent unit has a stock E60 M5 & his P500 result just following his running in completion, was 473BHP & that was run on a much cooler day so overall i'm very happy with the results.

Another interesting factor is the actual curves & the fact that back to back runs produced a virtually identical curve, which by all accounts is very rare on any car.

Finally, boy does the Emmy sound good from outside at full chat. We got quite an audience once the neighbours heard the unfamiliar V10, as apart form the EVO work, most of the WRC Dyno work is on Porkers, Scoobies & Evo's.

Gustav · 8th June 2006, 23:17

Thanks for the results! A standard M5 side by side today would have been interesting!

bwnicely · 8th June 2006, 23:23

what upgrades to get that power? headers, x pipe, exhaust, software? anything else? and who did it with what products, thanks, murph

w8pmc · 8th June 2006, 23:31

Quote:

Originally Posted by Gustav

Thanks for the results! A standard M5 side by side today would have been interesting!

It would indeed.

What i may try to organise in the Events section, is a RR day at WRC for UK M5 owners. I think their may be enough of them on here & it would be a cracking day out.

WRC are an awesome outfit & work with many of the Porsche Cup Teams by way of mechanical & tuning assistance as well as supporting many classes of motorsport at Silverstone.

w8pmc · 8th June 2006, 23:33

Quote:

Originally Posted by bwnicely

what upgrades to get that power? headers, x pipe, exhaust, software? anything else? and who did it with what products, thanks, murph

Purely Software, developed & written by DMS.

They have a strong showing in the UK & to a degree in Europe, but are only really now starting to break into the US market. They now have an office in Chicago.

They claim 548BHP from their map alone & a de-limited top speed of 205MPH.

Ron Barke · 8th June 2006, 23:34

Very interesting. Can't wait to hear what happens with flgojr's upgrade.

PPG4 · 8th June 2006, 23:51

Checkout www.supersprint.com/homeuk.htm...

Not trying to flame, but Supersprint's dyno of an unmodified E60 M5 yielded 529.8 HP. There have been other reports of other unmodified EU E60's yielding similar results.

Same dyno yielded 543.7 HP with x-pipe and mufflers.

For roughly the same money, I'd have to go with the SS set-up. But to each their own.

w8pmc · 9th June 2006, 00:08

Quote:

Originally Posted by PPG4

Checkout www.supersprint.com/homeuk.htm...

Not trying to flame, but Supersprint's dyno of an unmodified E60 M5 yielded 529.8 HP. There have been other reports of other unmodified EU E60's yielding similar results.

Same dyno yielded 543.7 HP with x-pipe and mufflers.

For roughly the same money, I'd have to go with the SS set-up. But to each their own.

I can well believe it & i've heard on here of a DMS M5 producing a dyno result of nearly 570BHP. I've also heard stories about tuning shops photoshopping dyno results to keep their customers happy. TBH it's a bit of a tricky one to get 100% accurate results, but you just try to find a good tuning firm & given WRC have done nothing to my car & the Run was done as a favour, they have nothing to gain by making figures up. Also & as said, it's the RR that EVO magazine use, so i'm happy that it's results are bonafide.

I'd said in other posts that i'd be getting my M5 rr'd & that i felt i had to know if the DMS mapping did make the difference they claim & i'm now not only satisfied with the on-road performance increase that the DMS map has provided, but i'm also factually satisfied that their claims are substantiated.

I may as yet try another RR later in the year (cooler temps), but will avoid those that make massive claims.

AJ · 9th June 2006, 00:28

so a stock m5 on a colder day showed 473 crank hp and yours showed 520 (554?) on a 30+ degrees day. a 53hp crank increase from from ecu tune only.

sorry. those numbers make no sense. and how do you come up with crank hp? all those euro dynos..

the only number that matters is what reaches the ground. true story.

m5 makes about 450hp at the wheels which is about 530 crank if you consider 15% drivetrain losses. i've seen 4 examples of those numbers achieved by different cars- so it is pretty consistent.

i understand that europeans have different dyno culture, but here (us) you run on a dynojet or mustang and measure rwhp and that is that...

and as i said- 25hp difference from pull to pull i can make just by angling the fan in front of the car slightly differently, so this is negligable- especially for close to $3k...

now, i am sure the car is more responsive, but i am almost positive that in absolute numbers you will not see much difference..

alex
few cars

PPG4 · 9th June 2006, 00:53

w8pmc:

If the dyno was still set up for an AWD car, how did they calculate the correction factor from HP at the wheels to that at the crank? Seems like the adjustment factor would be skewed... then to add another 25 HP on top of that based on some unknown conversion formula for the dyno not being set up properly? There are just too many fudge factors being applied here to get any real value from the dyno runs, particularly without any baseline testing on your particular car under similar conditions.

Given DMS' purportedly good reputation tuning BMW's, I will accept their claim that their ECU remap produced 548 HP. What I was suggesting in my prior post is that given the SuperSprint dyno runs... a) DMS software is really yielding only about 20 hp (nothing to sneeze at in and of itself) and b) it seems like a better value proposition given my own personal utility assessment (which includes the fact that eventually software will come out that will take advantage of the increased breathing characteristics of the SS hardware; whereas once you change anything on the car, the DMS software will no longer be optimized) the SuperSprint hardware seems like a better overall value.

At the end of the day, I'm glad you enjoy the DMS product and feel that you've gotten your money's worth. That's all that really matters.