O2-Optimizer XT660

You want less shaking of the bike and better throttle response?   
The O2-Optimizer is mounted between the stock lambda sensor and the stock wiring by using the stock plugs
With the O2 optimizer the closed-loop area in the lower revs is set to a fix value. ECU stopps regulating the injection and you get more power and less shaking in the lower revs.
Using a Power Commander without the O2 optimizer will not give you great benefits!!

What you can expect:

• no shaking in lower revs when using a Power Commander
• no error code in the display while using in the bikes without O2-sensor
• perfect adjustment of the bike with a Power Commander
• fits only XT-660 R/X from 2007 and later or XT-660 Z 2008 and later!!