Hyundai Veloster N Forum banner

1 - 8 of 8 Posts

·
Registered
Joined
·
53 Posts
He is absolutely correct in that it runs rich, because my tail pipes were black by the time I got home from the dealer and that is only about 45 miles or so.
 

·
Registered
Joined
·
37 Posts
He is absolutely correct in that it runs rich, because my tail pipes were black by the time I got home from the dealer and that is only about 45 miles or so.
The rolling anti-lag system will cause a lot of this as well. When you retard timing and allow combustion to take place after the exhaust valve opens (pop pop) there is going to be some unburnt fuel and carbon in the exhaust system.
 

·
Registered
Joined
·
128 Posts
Typically this is about right. The percentage of 10-15% loss from crank to the wheels, will bring about 30-35 whp loss. Add an overly rich A/F mixture, he's showing with the Dyno Chart and voila' you have another 2%-3% loss added on top.
 

·
Registered
Joined
·
21 Posts
"Flywheel" based one for comparison:

250HP sounds about right on flywheel with above rear-wheel HP figure. Maybe you need be on nurburgring to unlock 275. :p
 

·
Registered
Joined
·
876 Posts
"Flywheel" based one for comparison:
Ah no it's not.

250HP sounds about right on flywheel with above rear-wheel HP figure
Front whp, not rear wheel.

The video above is for a VN PP.

275hp is; OEM crank rated horsepower w/overboost, exhaust valve opened and in N-Mode.

This is a chassis dynamometer which measures wheel horsepower not crank hp. You can also calculate it manually at; 15%-20% loss from the crank thru the drivetrain to the wheels. This is a good whp rating for the VN. It's a little better than 10% loss, based upon this correction factors.

The above video is; 250 wheel rated horsepower (not flywheel), on a; Dynapack chassis dynamometer, made in New Zealand.
 

·
Registered
Joined
·
21 Posts
heh; like my little conscious

Flywheel mode to correct numbers by via calculation for you using SAE correction method... @2:14 btw...

Why i had "flywheel" in quotes.
 

·
Registered
Joined
·
876 Posts
Don't care, it's a chassis dyno that measures whp, not a crank hp and crank hp has nothing to do with this video.
 
1 - 8 of 8 Posts
Top