Raptor 250 dyno info

[motoz/HMF]

Raptor 250 dyno info:

Stock jetting:
Main - 133.8
Pilot - 25
Needle - non adjustable.
Fuel screw - EPA capped.

HMF slip on baseline jetting airbox lid off:
Main - 170 Mikuni LARGE ROUND
Pilot - 30 VM28/486 style
Needle - we modded the stock taper. (The GYTR will work)
Fuel screw - 2.5


We suggest you remove or mod the airbox lid to get max flow so that you can make the HP.


IMPORTANT READ THIS:
http://hmfengineering.com/forums/showthread.php?t=3658

[motoz/HMF]

Powercurve Horsepower.

All stock = GREEN
HMF S/O = BLUE
HMF FULL = RED

NOTE: The stock engine (carb, cam, bore) can be improved with aftermarket parts.
We designed the FULL SYSTEM HEADPIPE different than stock because we know you will be adding carb, cam, bore mods in the future.
Because of this, you will notice that the slip on makes a tad more power in the low end than the full system.
This is because of the larger headpipe/muffler, once you mod the engine the FULL SYSTEM will really pull some HORSEPOWER numbers.

4k RPM
STOCK 8.1 HP
S/O 9.1 HP
FULL 8.6 HP

4.5K RPM
STOCK 8.9 HP
S/O 9.9 HP
FULL 9.3 HP

5.0K RPM
STOCK 10.5 HP
S/O 11.7 HP
FULL 11.2 HP

5.5K RPM
STOCK 12.1 HP
S/O 13.2 HP
FULL 13.0 HP

6.0K RPM
STOCK 13.6 HP
S/O 14.5 HP
FULL 14.5 HP

6.5K RPM
STOCK 14.5 HP (PEAK HP)
S/O 15.2 HP
FULL 15.8 HP

7.0K RPM
STOCK 14.4 HP
S/O 15.2 HP
FULL 15.8 HP

7.5K RPM
STOCK 14.0 HP
S/O 16.1 HP (PEAK HP)
FULL 17.2 HP (PEAK HP)

8.0K RPM
STOCK 12.9 HP
S/O 15.5 HP
FULL 16.9 HP

[motoz/HMF]

Pic raptor 250

[motoz/HMF]

AIR FUEL RECALIBRATION
ALL HMF exhaust slip on/systems require the end user to recalibrate the fuel system on EFI or carbureted machines.
HMF does run every machine on the dyno and offers baseline AFR suggestions OR EFI controllers.
AFR baseline settings (EFI and Carbureted) are for basic sea level @ 60 degrees.
Baseline settings give the end user a starting point for tuning to their location and ambient conditions.

This EXHAUST, EFI CONTROLLER, AIR FILTER, JET KIT is NOT intended for use/sale in CALIFORNIA and does NOT meet CALIFORNIA, FEDERAL, EPA, CARB noise or emission standards for On Road/Highway, Public, Private or State Land and is prohibited for use by FEDERAL LAW.

This EXHAUST, EFI CONTROLLER, AIR FILTER, JET KIT is intended for use in “CLOSED COURSE COMPETITION OFF ROAD RACING USE ONLY”
on machines which DO NOT fall under the CALIFORNIA,FEDERAL, EPA, CARB noise or emission standards.

Modifications which exceed CALIFORNIA, FEDERAL, EPA, CARB noise or emission standards on NON “CLOSED COURSE COMPETITION OFF ROAD RACING USE ONLY” vehicles is prohibited by FEDERAL LAW.


FOOTNOTE:
2006 and newer Motorcycles with head/tail lights OEM from the manufacturer and EVERY All Terrain Vehicle, even those intended for off road closed course competition use, are considered CALIFORNIA, FEDERAL, EPA CARB noise or emission controlled vehicles.
Vehicle emission control information is noted in the owners manual and on the machine air box lid and exhaust muffler.
Any modifications which exceed the CALIFORNIA FEDERAL EPA CARB noise or emission standard is prohibited by FEDERAL LAW.