easiest way tune efi controller

2008 High Lifter Edition Polaris Sportsman 800HO

easiest way tune efi controller

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easiest way tune efi controller - 7/24/2008 10:14:45 PM

CRAIGGRIZZ700

Posts: 269
Joined: 5/12/2008
Status: offline

Just got my ehs controller on, whats the easiest way to tune it with my mods.

_____________________________

08 GRIZZLY 700 FI
28" OUTLAW MST'S
12" ITP SS108'S BLACK
VENOM 3500LB WINCH
EHS RACING FREE FLOW INTAKE
EHS RACING OUTERWEARS AIRBOX
EHS EFI CONTROLLER
2" POWER TIP "THE ORIGINAL"
DYNATEK
..............................................
06 GRIZZLY 660 SP EDITION
26"SWAMPWITCH'S
12"ITP
WARN 2500
CLUTCH KIT

Post #: 1

RE: easiest way tune efi controller - 7/25/2008 5:46:03 AM

VT_Grizzly

Posts: 941
Joined: 9/4/2001
From: VT
Status: offline

Just like tuning any motor, you need to tune at different throttle positions and read the plug....or if you want the absolute easiest and most accurate way (besides a dyno tune), buy an Air / Fuel ratio meter. I've got an LM-1 and really like it. I did a lot of mods to my old 600 and I didn't have a starting point. I got it dialed in pretty quick using the LM-1 AFR meter downloaded to the computer.

If you want to do it the old fashioned way, use your throttle screw so you have the exact throttle position. Make a few runs at that position and read the plug. Adjust you EFI controller for that throttle position / rpm. Go through these steps for as many throttle positions as you feel necessary (the more the better) and you should be on your way.

_____________________________

2000 - 675 Grizz
Custom Webcam
Ported / Benchflowed Head
27" Mudbugs
1.5" spacers
Adjustable dual rate front springs
HMF utility
K&N Pro Filter Kit
larger oil cooler and fan
EPI Comp clutch springs - Orange secondary spring
16 gram weights
40mm Edelbrock Pumper Carb
DG Locker
Warn bumper w/ trail lights
Quadrax Rear bumper w/ backup light
Ricochet skid plates
Powrmadd hand guards
Warn XT25
Other Accessories and wiring mods

(in reply to CRAIGGRIZZ700)

Post #: 2

RE: easiest way tune efi controller - 7/25/2008 12:36:44 PM

onrope71

Posts: 436
Joined: 12/14/2006
From: WV
Status: offline

Start out with the stock setting based on your mods. Go throught low to mid acceleration and then check th plug. If it seems white close to the end then add more to the yellow setting. Test it at wide open throttle. Look at plug att or subtract on the red setting. The EHS controlled should be very close to being spot on though.

_____________________________

2007 Yamaha Grizzly 700fi
Maxxis Bighorns, ITP SS108, HLS Suspension, Ricochet Full Skids, EHS Racing Air Box & Fuel Controller, Two Brother M-7 exhaust, Rox Hand guards & Risers w/ Uni Solex bars, Warn 3.0 XT winch w/ 2R Racing mount, PIAA 510 & H.I.D. lights, Dynatek CDI and coil, FPS Sheave

(in reply to VT_Grizzly)

Post #: 3

RE: easiest way tune efi controller - 7/25/2008 10:10:00 PM

CRAIGGRIZZ700

Posts: 269
Joined: 5/12/2008
Status: offline

Eric at ehs has listed a few settings, with ceartain mods in directions. I believe i figured out how to adjust lights and numbers.

_____________________________

08 GRIZZLY 700 FI
28" OUTLAW MST'S
12" ITP SS108'S BLACK
VENOM 3500LB WINCH
EHS RACING FREE FLOW INTAKE
EHS RACING OUTERWEARS AIRBOX
EHS EFI CONTROLLER
2" POWER TIP "THE ORIGINAL"
DYNATEK
..............................................
06 GRIZZLY 660 SP EDITION
26"SWAMPWITCH'S
12"ITP
WARN 2500
CLUTCH KIT

(in reply to onrope71)

Post #: 4