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Nissan 370Z Forum (http://www.the370z.com/)
-   Tuning (http://www.the370z.com/tuning/)
-   -   How did I dyno this high? (not that I am complaining) (http://www.the370z.com/tuning/41450-how-did-i-dyno-high-not-i-am-complaining.html)

6MT 08-22-2011 09:55 AM
Quote:
Originally Posted by Red__Zed (Post 1273426)
Why are you agreeing?
Because this is a silly argument.

Cmike2780 08-22-2011 10:03 AM
Quote:
Originally Posted by 6MT (Post 1273434)
Because this is a silly argument.
:iagree:

98intrigue 08-22-2011 10:41 AM
Quote:
Originally Posted by Cmike2780 (Post 1273418)
No roller dyno is 100% accurate. The only number anyone should be concerned with are the gains. What's to say most dyno's read low. It doesn't matter. It's not like the OP was comparing this to other dyno's and bragging about it. Dyno's are only tools to track your progress and figure out if your mods actually show gains.

Yeah PM's tend to read on the high side, but I really don't understand why people get so pissy about seeing a high number. A 10hp gain is pretty accurate for an UpRev tune.
Exacty. A 10hp gain is a 10hp gain no matter what dyno you're on...that seems to be the average gains from an UpRev tune. Matt, take this to the track and see what your Z can do. If Chuck's car dynoed around the same as yours, you should have a 12 second Z on your hands:tup:

Red__Zed 08-22-2011 10:45 AM
Quote:
Originally Posted by 98intrigue (Post 1273592)
Exacty. A 10hp gain is a 10hp gain no matter what dyno you're on...that seems to be the average gains from an UpRev tune. Matt, take this to the track and see what your Z can do. If Chuck's car dynoed around the same as yours, you should have a 12 second Z on your hands:tup:
Realistically, the percentage gain is more relevant. And you hope they don't change parameters between runs.

MattP725 08-22-2011 11:00 AM
Quote:
Originally Posted by 98intrigue (Post 1273592)
Exacty. A 10hp gain is a 10hp gain no matter what dyno you're on...that seems to be the average gains from an UpRev tune. Matt, take this to the track and see what your Z can do. If Chuck's car dynoed around the same as yours, you should have a 12 second Z on your hands:tup:
Oh you will see me bragging if I run 12s lol.

I figured it was a bit high but I know they didn't change parameters between runs because I watched the screen through all the runs. They have a solid reputation and that sort of stuff would def show through.

While I'd like a universal standard I'm sure most of us with the standard boltons are within 5-10hp of each other so what is the true difference.

It was a fun experience regardless and the uprev was def worth it.

6MT 08-22-2011 11:09 AM
Quote:
Originally Posted by 98intrigue (Post 1273592)
Exacty. A 10hp gain is a 10hp gain no matter what dyno you're on...that seems to be the average gains from an UpRev tune. Matt, take this to the track and see what your Z can do. If Chuck's car dynoed around the same as yours, you should have a 12 second Z on your hands:tup:
For what it's worth.... my gain from baseline with an UpRev tune was 25whp. Nice to see, but I was more interested in the torque plot over an RPM range. The whp number really meant nothing to me. Besides, who drives their car at 7500 rpm all the time?

Cmike2780 08-22-2011 11:21 AM
Quote:
Originally Posted by 6MT (Post 1273692)
For what it's worth.... my gain from baseline with an UpRev tune was 25whp. Nice to see, but I was more interested in the torque plot over an RPM range. The whp number really meant nothing to me. Besides, who drives their car at 7500 rpm all the time?
Wouldn't that notion apply to the torque curve numbers also?

MattP725 08-22-2011 11:23 AM
Yeah to me that is definitely inflated too...

end of the day it just shows that numbers are not a definitive source of information.

vividracing 08-22-2011 12:38 PM
Quote:
Originally Posted by 6MT (Post 1272989)
:roflpuke2::bowrofl::icon18::inoutroflpuke::ugh2:

That is the funniest thing I've read on here in a long time!!
Quote:
Originally Posted by 6MT (Post 1273115)
Well, do you think that if I were to travel down a very long hill and reach a very high top speed; that I would deduce that my car has more "power" than someone who runs a short run on a measuring device? Like a dyno? Trap speeds are measurements like dyno runs. But trap speeds can be very deceptive.... as the example above proves.
:ugh2:

MattP725 08-22-2011 12:46 PM
Quote:
Originally Posted by vividracing (Post 1273855)
:ugh2:
The only valid argument for that would be differing alititudes and atmospheric conditions... that could technically affect the trap speed I would assume. Still a closer measurement across the board than dyno.

wstar 08-22-2011 12:59 PM
Quote:
Originally Posted by MattP725 (Post 1273883)
The only valid argument for that would be differing alititudes and atmospheric conditions... that could technically affect the trap speed I would assume. Still a closer measurement across the board than dyno.
We can roughly fix up drag race results with a DA calculator (and I generally assume most tracks are level, not downhill lol): DA Calculator - Density Altitude Calculator - DragTimes.com

Main problem with drag results is they're indicative of more than just how your engine is doing. What tires you're on, track conditions, extra equipment that helps with setup and launching (e.g. suspension, line lock, etc), what kind of tire rubber you're running, skinny front tires you'd never use on the street, and of course driver skill.

chuckd05 08-22-2011 02:32 PM
I dynoed 343 last year than Less this year but my trap was
106.8 last year in fall weather this year trap was 108.9 in 97 degrees (literally)

So I have no idea what to think about there dyno other than it works for
Before and after tests.

partsguy 08-22-2011 02:35 PM
Quote:
Originally Posted by 6MT (Post 1272960)
And try and grow some thick skin. You'll need it.
Good advice.

MattP725 08-22-2011 03:16 PM
I don't think the thick skin is necessary unless you are foolish enough to think your intake/HFC/catback of brand X is going to get you SUBSTANTIALLY different results than the next guy... it seems most of the Z cars are pretty much in line with each other all things being equal. I can't reasonably expect to be 40 hp more than the guy down the street with the same mods as me. Just doesn't work that way.

John@Z1 08-22-2011 04:48 PM
The highest HP NA 370Z that we've dynoed made 321rwhp. This was with LTH, Gen 3 and FI CB. We have a dynojet. But I hear you can go to another dyno and make more power than ours. Our clients say that our dynojet reads low :(.

I don't believe your car is a factory freak. I think that that dyno needs some work.


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