370z GTM Stage 2 Supercharger Dyno (Dynopack @Hawaii)
 

VQinc Dyno Day September 2011 - YouTube

http://www.project-definition.com/an...yno370gtm2.jpg

Andrew's 370Z 2nd pull - YouTube

Dyno'd the car on a Dynapack today... got some good numbers seeing that changing location, altitude, gas, and overall dyno were all factors to consider.

473 HP
340 TQ

GTM Stage 2 Supercharger

*Thanks to Sean @Munkywurks (Local shop in Hawaii) for hosting the dynoday event

Numbers from Socal @GTM:

http://i313.photobucket.com/albums/l...ynoVsstock.jpg

Now back to Gears of War 3!

Good stuff!
 

AWESOME results my friend. I gotta ask tho what kind of fuel mileage are you seeing after this install? and do ya love it or what?

Isn't that pretty low for a hub dyno

Wondering what caused the blip in the curves. Nice numbers!

I'm no expert on dynos but I heard dynopacks dyno 6% lower than the rollers. Again, i'm no expert. Maybe someone can shine some light on this... I actually thought I wouldn't break 450 hp.

As for the gas mileage, it says 21.4 on my guage but i am pretty sure that's wrong. This beast uses a gripload of gas but it is a small price (large?) to pay for the power and overall awesomeness. I constantly get a lot of compliments on how great she sounds. GTM did a great job.

Lastly, the little dip/spike might be when the SC kicks in? I dont know... I am only assuming because of my baseline is around there :)

its says that im getting 31 MPG lol. i measured how many miles I got a tank last week, got 310 to a tank.

310 miles to a 19 gal tank equals 16.3 miles to the gallon.

Dynapacks read higher than regular dynos they are a hub dyne which cuts out the the wheels/rotational mass that bogs down dyne numbers.

^cool. Guess that means Hawaii dynos really low then.

488 to 473 with a difference of 15 hp

So I'm guessing, if GTM had their dyno here on the island, I might be at ~450

This is assuming that dynapack is suppose to be higher...

Some photos courtesy of Kingbaby of the setup and turnout:

http://i276.photobucket.com/albums/k...y/61816bcd.jpg
http://i276.photobucket.com/albums/k...y/8505eda7.jpg
http://i276.photobucket.com/albums/k...y/2f5d98bc.jpg

Some cars that came out (there were more):

http://i276.photobucket.com/albums/k...y/2df71386.jpg
http://i276.photobucket.com/albums/k...y/fc9e2a8e.jpg
http://i276.photobucket.com/albums/k...y/00f2cbaa.jpg

More at original post with more videos: Click Me!

Also my buddy's Nismo:

Scott's Nismo 370Z - YouTube

OP,
Diffferent Dyno #'s should be taken with a grain of salt. I wouldn't get to hung up on a 15whp difference. That could all be attributed to weather conditions for that particular day. Also the fact that you are comparing results from two completely different climate zones.
Well my personal experience tells me your knowledge is lacking and incorrect. I dyno'd my old 35th on both a Dynojet (industry standard) and a Dynapack, within in a week of each other, on almost an identical morning (weather wise). Both results were within 1hp & 1ft/lbs of each other.

MY personal experience and logic would say that a HUB dyno (Dynapack) would get great numbers than a DYNOJET. Great Example is Church Automotive in Los angeles that yields greater numbers than dynojets mainly because it is reading the power from the hub. When you have to spin your wheels for a DYNO to read your HP it will be lower because power is lost when it has to be transferred to the wheels.

Of course the owner of the DYNO could make adjustments to his DYNOPACK to account for the higher HP. Not sure I don't own one just stating what I know from Experience and what logic tells me (power is lost at wheels)

So you have dyno'd your own personal vehicle on both types? and with almost all things being equal, have seen the drastic differences?

-Church's automotive, balloon dyno is legendary... and shouldn't be included in this convo.

All load based dyno's can be altered to show fictitious gains, by adding correction factors etc.. which is why most consider the Dynojet to be the defacto standard.

Regardless, dyno #'s should only be used to show increases from baseline. Trap speeds will tell you what you are really putting down.

Yes I have, all dyno numbers in the end are relative, all I am saying HUB dynos should read higher on average because they are technically removing one large variable (wheels/tires - rotational mass).

I get about 350 WHP on a Dynopack and about 320ish on dynojet

Nice numbers man, Sounds GOOD to.. Always liked the yellow Z to.. The chick in the door at 40 Sec is nice to. LOL
Auto or 6 SPD? Funny sounded like mine 7SPD auto.