changing fuel percentage

[brunom97]

hello i have a sportwerks mayhem with an axial .28rr that runs on 20% nitro would it be ok then i have a thundertiger tomahawk that runs on 20% nitro and then an exceed madwarrior that also runs on 20% would it be ok if i change to 30% on all of them please tell on which ones would i have a problem and would i have to tune them would i have to do any other procedures like break it in again on 30%

 

[Racer 1966]

They will all run on 30%. A tank of easier running to adjust the engine to it and some minor tuning and a cooler plug should be all you need. At worst you have to add a shim under the cooling head.

 

[Metalhead Matt]

You won't see much, if any performance increase. I'd just stick to what you know works. Keep 'er simple.