520 BHP on dyno

[R33_GTS-t]

Originally Posted by FiLi

Nice results. Congrats

Just a bit off-topic, anyone know the CO2 emissions per km?

2 polar caps per km. As we speak, rainbow warrior has docked on the dyno to prevent another 'environmental catastrophe'.

Dyno losses:
Puma Race Engines Technical Guide - Measuring Engine power - engine dynos and rolling road dynos

[Gigjam]

great numbers, congrats

[canman]

Originally Posted by mindlessoath

my thoughts are that dynopacks are used for tuners to see what there parts make in hp after being bolted on. my guess. i dont belive they are better for showing the actuall car hp and can get very missleading.

my opinion. mabe there are some facts i dont know. anyone have those facts? i didnt find much on the issue.

No idea where you got that idea from. Nismo, HKS, Honda, Ford, Lockheed Martin, Mitsubishi, Subaru, TRD the list goes on, all own Dynapacks and all develop new vehicles and parts on the dyno.

In a way all dyno's are used as a comparison tool so you can see what improvements are being made, so in that part of your comment you're correct. Reality is that hub dyno's are much better at being able to repeat your numbers run after run as they don't have to deal with such inconsistencies as tyre slip, raising tyre pressures etc etc

The fact of the matter is that most people like to see big numbers and think their cars making 500HP when in fact it's not, and don't like seeing the reality of what it's really making when it's put on a Dynapack. There's plenty of proof around that Dynapack's are every bit as good for measuring a cars power and torque accuratly as it is at showing differences between runs.......it's what it's been designed to do over the last 15 years and that's why most of the worlds major manufacturers use them.

Back on subject now, nice car Benji, you must be stoked to be the first person to get your hands on one.......... hows peoples reactions on the street been to the car ???

[tweenierob]

Originally Posted by canman

The fact of the matter is that most people like to see big numbers and think their cars making 500HP when in fact it's not, and don't like seeing the reality of what it's really making when it's put on a Dynapack.

Lets not start this debate, at least twice a month i have cars in that have dynapack dyno sheets. The cars always make 10-15% less on my dyno and much more realistic figures!! As in, we all know what horsepower certain spec cars can acheive, when they make 40hp more than what is possible before they come in to us you can chuck the dynapck results in the bin.
Unfortunately you have hit a bit of a nerve for me, people can get really hung up on dyno results even when they are from different comapnies, and this causes problems for me. THere are two companies in the uk (names not important) that always make my job much harder, customer A isnt 100% happy with there car so they come to see me. I remap car and then go out with customer A, customer A cant belive the difference 'it must have another 50hp!!'
'Your car is producing 600hp, 525 at the wheels'...
'but it made 628hp on bla bla bla dyno'
Customer A leaves not 100% sattisfied

Next one is carrying on from SteveN, 'But my car made 610hp before', 'I dont understand, it is twice as fast'
'Let me see your old dyno sheet'
'Hmmm, 415atw' now 520atw...

FFS!!!

As much as i hate to admit this I have had two cars that i have had to have dynapack power run'd. One was a 1300hp supra, and another was a T88 MR2 on remoulds (i shit u not ). For these the dynapack was much better.

Rob

[canman]

Sorry yes, I won't block up the thread with this subject, but in response to you, I should clarify my comments some more.

As with any dyno, how the operator sets up the dyno and does the runs can skew the results somewhat, with any dyno runs you'll always need to know way more info than most people know such as gear ratio, air temp, baro, int he case of hub dynos - run length, in the case of rollers - tie down pressure etc etc

So in short, I suppose it's really more about getting an operator who runs the dyno's with a realistic/consistent setup and isn't chasing big numbers in the name of sales......sounds from what you've said that you're not one of those people so sorry if you thought I was implying that.

I totally agree with customers just looking at numbers....... most frustrating thing in the world........ as long as it goes better than before you brought it in that's all that matters in reality, but of course a lot of people want to talk numbers down the pub........ each to their own I suppose.

[bonzelite]

I've noticed that dyno threads tend to be somewhat forum cliche's attracting gigantic disagreements. It never fails:

There is the contingent of people who will not believe any numbers from a dyno as being credible or accurate no matter who did it or with what equipment.

"What was the barometric pressure readings that day? What was the birth sign of the dyno operator? Is Mercury in retrograde? Is that at the crank? At the hubs? At the wheels? At the breakfast table? At sea level? Is the global warming reading correct? Did you use a geiger counter? Did you dyno the car on a leap year"


And if the numbers are to be believed, there is hair-splitting over what the "actual" power "really is."

Some people are never satisfied with any readings and will present alleged evidence that such-and-such dyno company is not as reputable as this other one, or the dyno run was somehow altered or faked.




How about that the GT-R is FAST AS HELL. That should clear things up

[canman]

Don't think anyone will disagree with you there

[Thrust]

Originally Posted by bonzelite

I've noticed that dyno threads tend to be somewhat forum cliche's attracting gigantic disagreements. It never fails:

There is the contingent of people who will not believe any numbers from a dyno as being credible or accurate no matter who did it or with what equipment.

"What was the barometric pressure readings that day? What was the birth sign of the dyno operator? Is Mercury in retrograde? Is that at the crank? At the hubs? At the wheels? At the breakfast table? At sea level? Is the global warming reading correct? Did you use a geiger counter? Did you dyno the car on a leap year"


And if the numbers are to be believed, there is hair-splitting over what the "actual" power "really is."

Some people are never satisfied with any readings and will present alleged evidence that such-and-such dyno company is not as reputable as this other one, or the dyno run was somehow altered or faked.




How about that the GT-R is FAST AS HELL. That should clear things up

Excellent post. All power readings should come with a warning in LARGE LETTERS saying: Read The Bonzelite Proviso!!!

PS Someone gave me a ratio of 1 to 1.16 for rw to engine correction.

[tweenierob]

I have now updated my software to state 'the Bonzelite Proviso' on all dyno graphs!! Very funny post mate! pmsl

Always good to start the day with a laugh

Rob

[bonzelite]

Top-o-de-mornin to ye fellowes

(tips hat here)

-bonzelite

[FiLi]

Originally Posted by R33_GTS-t

2 polar caps per km. As we speak, rainbow warrior has docked on the dyno to prevent another 'environmental catastrophe'.

Dyno losses:
Puma Race Engines Technical Guide - Measuring Engine power - engine dynos and rolling road dynos

Thanks

[ybioul]

Originally Posted by Benji Linney GTC

Big thanks to Rob and the gang at perfect touch for the chance to put the 35 on their awesome Dastek 4wd dyno.

My car is totally factory standard, standard boost and run in

Official word is 'Its maximum power is 480 PS (473bhp) (353 kW) at 6400rpm'


We decided to try out BP Ultimate 102 unleaded, (which is still pump fuel).... 520 bhp @ 6,617


She was serviced 500 miles ago, but decided to change the engine oil again after a bit of track action


Looking forward to next dyno secssion when mapping god Tweenierob will have her mapped for a new Ti exhaust, remove cats and other bits

What was the mileage of this car, just for me info ? thanks

[GTaaaaaarrrrrr!]

When are you having the mapping done and exhaust work Ben? Will it be going back on the dyno for a before and after?