mattpearson1987 Posted December 1, 2004 Share Posted December 1, 2004 I've got a 1990 dt125r, dep rear silencer but only seems to b doin 50 miles per tank, n e 1 got n e ideas, also does any1 no how to derestrict early models mines a 1989/90 model so every1 says its easy but doesn't say how? Thanx Matt :? Link to comment Share on other sites More sharing options...
solorider Posted December 4, 2004 Share Posted December 4, 2004 the front pipe has an extra pipe in it,you can see it if you take off the exhaust,and the powervalve is pegged shut if you go to http://geocities.com/yamaha_dtr125/menu.htm this site will explain everything Link to comment Share on other sites More sharing options...
mattpearson1987 Posted December 6, 2004 Author Share Posted December 6, 2004 Nice 1, allthough got powervalve servo on it, dep silencer but not dep front pipe, on christmas list. any tuning tips? Link to comment Share on other sites More sharing options...
solorider Posted December 6, 2004 Share Posted December 6, 2004 you could take thr restrictor out of the front pipe,that will only cost you a gasket,further tuning will cost and it is best to get it done properly and you risk making the engine more unreliable Link to comment Share on other sites More sharing options...
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