QUOTE (cannondale27 @ Apr 1 2009, 04:37 AM) <{POST_SNAPBACK}>
Couple tips to make dyno tuning faster.
Use the AFR bar guage on dyno for idle and low end. Just get it in the green or slightly lean.No need to make runs. Do this last after topend tuning.
When you tune the topend dont be overly concerned with AFR till you get the line straight as possible using map editor. Then use the flowrate to get afr where most power is. Changing flowrate will leave you straight afr straight and change entire line up or down. Makes finding the power easy. Hard part is getting afr flat.
Ran into a new one last week on dyno. Check your throttle percentage especially after setting idle which you will have to do after making changes. If throttle % at full isn't 95% or preferably 100% adjust the cable or check the thumb throttle to see if the arm inside has full travel. Ran into one that had about 1/8 in less throw than it should which led to only 80% throttle and made top end tuning impossible.
Use the AFR bar guage on dyno for idle and low end. Just get it in the green or slightly lean.No need to make runs. Do this last after topend tuning.
When you tune the topend dont be overly concerned with AFR till you get the line straight as possible using map editor. Then use the flowrate to get afr where most power is. Changing flowrate will leave you straight afr straight and change entire line up or down. Makes finding the power easy. Hard part is getting afr flat.
Ran into a new one last week on dyno. Check your throttle percentage especially after setting idle which you will have to do after making changes. If throttle % at full isn't 95% or preferably 100% adjust the cable or check the thumb throttle to see if the arm inside has full travel. Ran into one that had about 1/8 in less throw than it should which led to only 80% throttle and made top end tuning impossible.
I also just started getting my quad running but I have the 450 and ported and boomer's gas tank mine is also shooting flames out the back.
What kind of settings do you think I should start at or what should I be looking at to fix.
Please help.
Thanks Wayne