I haven't gotten a programmer yet for my 2008 wr250x. I was planning on leaving it stock, but when i rode a buddy's, with a programmer, pipe & header, i noticed a definite improvement, especially in the low end.

So I picked up a header & pipe. I'd already opened up the airbox.. just a little.. the wr250's don't need it as much as some. I went on a ride this last week.. some steep mountain climbing.. lots of work on the engine. I was in 2nd or higher most of the time, but there were a couple of long steep sections i was in 1st.

Anyway, my question is, will a lean running condition damage the engine? How would i know if it lean to the point of damage? The wr's run premium fuel, & I was in the 3k-8k elevation range. Does the FI make any adjustments for increased air & less exhaust pressure? The us wr's don't have an O² sensor on them.

It didn't pop on decel any more than usual.. very little. It seemed to have as much power as my buddy's with the programmer. Do i really need the programmer? The bike seems to run great.. was it the elevation? I was planning on getting a programmer.. but am wondering if it's really necessary..

Thanks for any input.

scotty

Thanks, Eddie.

It seems to me if it's not running bad, i can live with it being a little lean.

But maybe i'll go ahead & spring for a programmer.. maybe santa will bring me one. :)

Thanks again for your helpful advice.

scotty