How do you adjust fuel computer (mapping)

[Johnny Five]

Does anyone have instructions for changing the stock computers' fuel mapping. My sled is a bit fat! I have the Ultra Q muffler. (08 RTX) Can't get ahold of Allan Ulmer, I'd really like to change it before the weekends' rides!

Thanks J5

 

[motorman]

fuel mapping

ttt
good luck

 

[AIRWOLF]

Fat??
why do you think its running rich?

 

[Johnny Five]

Because there is "soot" inside the tip of the muffler and the people riding behind me say things like "why does your 4 stroke stink so bad?"

 

[doo_man]

Mine seems to load up on fuel a bit and has a slight bog. I was told by dealer only way is to buy a fuel controller - any tricks out there?

 

[Bpatch50]

power commander

You need a power commander. Call Ulmer...if you can't get ahold of him, try Excell. They sell the same product.

 

[Johnny Five]

I called Ulmer the other night, he was supposed to email me the instructions. He is really busy right now apparently. I remember the first step was to remove the ground from the computer up in the nose. After that I have no idea. Also, he said that the instructions were on his website for the Apex and it is a similar method, however, I've spent quite a bit of time reading and searching and I can't find it. I know on my boat there is a small adjuster (potentimeter) that you change with a small flat screwdriver but, I'm looking to do it right the first time. If I remember right, you can only make a small adjustment this way, IF you require more you'll need the power comander. But, my sled works great, it is just a bit smelly for the guys behind me and the muffler is pretty black inside the tip.

Any help is great tho' so keep 'em comin'!

 

[AIRWOLF]

http://www.ty4stroke.com/viewtopic.php?p=576397#576397

this will only help the low end

 

[Johnny Five]

Airwolf, Thank You very very much! That was the thread / info I was looking for. I knew someone would know!

Thanks again!

J5

 

[AIRWOLF]

Airwolf, Thank You very very much! That was the thread / info I was looking for. I knew someone would know!

Thanks again!

J5

let me know how it works out for you..I added fuel to my nytro with a Yoshi exhuast

 

[Nytro40th]

I added fuel to my nytro with the hauck husher, went up 10 and then lowered back down to 5 for all cylinders