Reply To: Idle issue
* Any * pipe on bike = must be replaced within 2-4yrs max.
Rubber rots inside too. And gums up parts. Stock lines have tiny holes (slower flow)
Braided fuel and air lines last 10 years , and they run colder (meaning heat resistant) so your fuel doesnt turn gassy on a hot day.
Big holes flow more air and fuel.Ā Ā Ā Ā So your carbs get fuel quicker ,Ā Ā Ā bigĀ vacuum lines help your pump flow fuel better (it works like a pulse)
So more air in the vacuum system helps.
Giant filters (a good one!) Hold more clean fuel as a mini reserve plus your carb has less dirt going to it.Ā Ā Cant trust every Petrol station out there.
SoĀ yes air and fuel lines help.Ā Ā Any extra info is at /shop/ pageĀ orĀ Ā Ā searchĀ *fuel* in the search bar ^ for a diagram .Ā Pictures will reveal the differences.
Next up.Ā Stock jets are crap. I’ll leave it at that lol.
Bigger jets = slight torque boost, rear engine is COLDER since petrolium has cooling effect.
To understand or how to swap carb jettingĀ Search *Carb* ^
There is a lot that can be done on these machines,Ā but one warning.Ā They hate *china* copy parts!Ā Eg. Cheap Ā£1 lines. š
For anything else (tune wise), copy this linkĀ or tap below
https://m.facebook.com/groups/345623961212?view=permalink&id=10154079865506213
It saves me rewritting as i get asked often butĀ i am amending the list above as i have done a lot more since then.
Will be finding time to make a properĀ 101 Book for all thingsĀ GT125RĀ tuningĀ with probably 3 pages but should be enough to allow people to do things without paying mechanics robbery prices.
Also i have uploaded as many service manuals in forum as (125/250 = same frame)Ā so books also contain a lot of maintenance info etc…
Ofcourse,Ā Ā ifĀ try everything I said in the previous replies , your bike WILL run better!