GStwin.com GS500 Message Forum

Main Area => Projects / Builds, Racing and Tech => Topic started by: dB-tje on May 28, 2014, 08:51:27 AM

Title: Dyno run questions.
Post by: dB-tje on May 28, 2014, 08:51:27 AM
Hi guys, today my GS went to the dyno for some testing and fine tuning.
The result so far is 34kw on the rear wheel, but there is a problem. The bike is running lean from 4000 to 7000 rpm.
Does somebody know how i can fix this?

Specs:
1990 GS
Dynojet stage
K&N open airfilter
Open exhaust (takkoni) on stock pipes

(http://i1068.photobucket.com/albums/u459/d-barelds/Mobile%20Uploads/GS500%20Streetfighter/A77B59C9-D1EE-4F91-81CA-6140AC94E546_zpsrmitgtut.jpg)

Greetz dB
Title: Re: Dyno run questions.
Post by: bombsquad83 on May 28, 2014, 08:59:44 AM
A couple of small washers under the jet needle clips should address midrange leanness.
Title: Re: Dyno run questions.
Post by: bombsquad83 on May 28, 2014, 09:02:15 AM
I see that you have the dynojet kit.  Many people have had issues with dynojet stuff on this bike.  If you can get it working to your satisfaction then great.  Also, the dynojet needle should have multiple clip positions on the needle, so you can just move the clip down one or two slots on the needle to address midrange leanness instead of needing washers.