My dyno numbers

P's_Z

Ok, so not really related to tuning, but couldnt find where to post(admins please move if necessary, sorry and thanks). Today i did a few baseline runs on my completely stock 2013 Z and here are the results:

270whp
220 tq

I know these are just numbers, and while i feel good about whp, i guess i expected to see a bit higher tq number, what do you guys think?

Runs were made on 4th in a mustang dyno. Humidity was high and Temp was about 92 degrees. I'll try and post the graph later on.

Comments/opinios are welcome

DEpointfive0

Should be in 5, BUT without a tune, you'll hit the speed limiter

__________________
Do YOU want to know what/where I got my username from?

P's_Z

Thats what i was told! But the guys at the dyno said that it'd hit 130 in 5th and their response was basically "at my one risk" and "normally we just do it in 4th "and this and that". They werent being jerks but i guess it was my own fault for being ignorant as this was my first time "dynoing" a car. I guess also trusting them since they do this everyday and just listening to their recommendations. What was cool and did not expect was, that since i wasnt tuning or anything, they let me do 2 of the pulls plus the 1/4 mile simulation. Ive always seen the tuners doing the pulls but obviously because the cars were being tuned

synolimit

Not saying they don't know their stuff but not everyone knows everything about every car. I'd have no idea my gear ratios if I didn't own this thing. You shoulda asked or really told them, no 5th is the correct gear in this car with this ratio. But no never mind, from now on do the runs in 4th so you have a good baseline to go off of.

__________________
13 370z-

P's_Z

Thanks! I could always run a baseline again in 5th this time. I do plan on modding, but probably not for a while, so I think I have some time before then.

synolimit

U will top out in 5th though but everything below 155mph you'll be good on.

__________________
13 370z-

Jordo!

4th is fine -- less wear and tear on the motor.

Those numbers are in line with expectations, and that particular dyno is calibrated to read close to a dynojet.

EDIT: Correction; the whp figures are close (although on the lower side) but the wtq readings a very low relative to a dynojet.

__________________
Enjoy it. Destroy it.

blumango

Hi,

On the mustang dyno, there is a factor that says "HP@50 Miles/hr". May I ask what number is keyed in?

P's_Z

Did not notice, does that appear in the graph or just in the computer screen in the dyno?

I apologize for my noobiness

blumango

You should see it at the bottom of the main screen. Mustang has a list of cars with these figures which the Dyno operator must key in but unfortunately, Mustang stopped updating the list since 2007. Our cars are not listed and that can affect the Dyno figures....

P's_Z

Might be why my dyno chart shows that I have an infiniti G37 and not a 370z

Jordo!

In theory, that value should be about the same for both the G37 and Z, so assuming the value they entered was correct for the G, you should be in the ball park.

I'm just wondering where the public can find these values listed.

It should be public domain info but I can only find references to it and no actual tables with data

Anyway, notwithstanding the degree to which any given dyno reports "true" values, I find that you get less consistent results between load holding dynos vs. inertia dynos because different values may be entered between shops.

I say, find a place with a dynojet. Your numbers will be easier to compare and contrast as the key value of relevance (the weight of the drum the wheels accelerate) is fixed from unit to unit, and thus results are far more consistent (i.e., reliable). Then you just have to note SAE values vs uncorrected and or STD, as well as the gear you are in (4th is fine, although derived torque values tend to be a bit lower relative to 5th).

In other words, the values different individuals get from shop to shop on Mustang dynos are harder to compare than the values folks get from dynojets, and at the end of the day, THAT is how to most clearly conclude anything about how your VQ37 compares to others.

If you go, ask for the drf (actual data file) -- if you email it to me I can make comparison graphs of your output vs several others.

__________________
Enjoy it. Destroy it.

P's_Z

Finally had some time to look for this info... HP@50MPH is 13.13

blumango

Awesome! So if all the mustang dyno operators are
using this value and also stay consistent to the values of the car's actual weight, we all can have a better comparison! Thanks for your effort!

P's_Z

And thank you for your time and information