That's because very often low reading dynos are tuned higher to get Dynojet numbers not to loose customers. Seen billion times.

Maybe you thought it was because outside-US there are not good enough engine builders or mappers so SAME PARTS give them 20% less power?

THIS is a BS!

 

That's why I like to back up my dyno chart with a run on the drag strip. My car may only make 438 AWHP, but it runs 10.4@ 130.

 

Thats why we have roll on tests between different cars)))

 

do any of you guys do 30-130 runs ?

here in the UK the MLR forum annually do a timed run event on a runway for 30-130 mph

 

I believe it's 60-130

 

Simple fact is, 1 HP is a very well defined quantity. There shouldn't be any games at all if people had a shred of integrity.

That's not limited to shops either, I know the dyno manufacturers themselves play these games.

My problem comes from statements like yours though claiming 20% lower power numbers. That's not an attack at all just pointing out the situation where you are saying your numbers are comparable at 20% values. I'm sure there are plenty of shops "outside the US" playing the same BS games and their numbers are no more reliable simply because they are "outside the US."

FWIW though, those 3 dynos were within the same building, owned by the same company, and properly calibrated to manufacturer specifications. The Dynojet WAS NOT the highest of the three...

 

This is kind of true, so it's a little disappointing that we have all these problems with dyno credibility.
For a reality check and to have some fun, I tried it the hard way, (calculating whp from a log) to help a dsmtuners friend (dsmmatt28) who didn't want to take his car to a dyno. Some interesting things came up in the discussion. This was a couple of years ago. I'm "We're on Boost" over there.

http://www.dsmtuners.com/forums/tuni...e-physics.html

 

EXACTLY, THIS IS THE POINT!

But the fact is that Dynojets do NOT measure HP, while they measure DJWHP !!!





AS you really seem to miss the point/not to understand/want higher and false number than what you have, I'll loose one more post:

http://www.factorypro.com/magazine/d...hp_reason.html

"You mean that a lot of non-dynojet dynos had to install "dynojet inflation channels" to read higher than True hp? Yes. Almost everybody wants a high reading dyno."

"...he didn't like what the real number was, so he inflated it to 120, from the actual 90.
And now, the magazines are scammed into believing it's "correct" and will only accept inflated hp numbers in their magazines - and no longer the real, True HP numbers.
Since then, a dj dyno does not = Superflow does not = Fuchs does not = any other dyno that tries to clone a djhp number. Thanks a lot, dynojet."

 

How do the cars begin the run while keeping the contest fair?
This is an interesting alternative that would reduce variance from luck or driver skill.

 

You'll pass through the 30mph speed while accelerating in the gear you prefer, and the timer will begin at 30mph...

 

Dude, I don't know what your problem is. We are on the same page that there is lots of BS going on with dynos.

I think the only difference between you and I is you seem to believe it only happens in the US? I'm saying I have no doubt it happens every where else too.

Point being, take dynocharts with a grain of salt no matter where they come from. I'm really not interested in this going further, you seem to think I have some point to prove about Dynojets when I certainly do not.

Oh, but for the record, NONE OF THEM measure HP. They calculate it either from a torque measurement or acceleration of a known inertia measurement.

 

Again.
It's not happening ONLY in the US, but unfortunately DynoJet was made here, and unfortunately here became the standard for WHP measurement so that other dynos had to inflate their numbers not to loose customers.
But those ARE NOT whp, while they are DJWHP... and you read that 1 DJWHP is not 1 WHP.

This was just in reply of YOUR question when YOU asked:
" In having a look at the dyno and did some calculations, is the power not a bit low for that turbo at that boost?
Full race website say 650hp turbo? And this dyno reading is 469whp"

Now you know why: the DJWHP you know ARE NOT whp.
Unless, as I told, you think that only here there are very good engine builders and mappers that can squeeze out all the power from a defined turbo.

 

03whitegsr never said that, it was Acssa.

https://www.evolutionm.net/forums/9853211-post1291.html

 

Ah sure sorry! So just EDIT and consider all my reasonments in reply of accsa.

 

How did this turn into a Dyno fight?

Seems like people have a hard time talking about politics religion and now Dyno's.

I would like to think that the majority of people realize that the Dyno is simply a measurement tool. It is best to compare Dyno numbers to a previous run on the same Dyno. In order to see the difference. Jumping from Dyno to Dyno and trying to compare is useless.

If people need to inflate there numbers that is pretty weak. There have been a few shops in here called out for such practices. I don't even see them around any more.

Back on topic...

Any more solid results yet? I would like to see some more of these turbos make it into peoples hands.