Tuning ?

[Kryptek1]

i purchased another savage x 4.6 I put the purple Hpi tuned pipe on it did the break in and i didn't even have to tune the engine it runs great but I was running my temps around 250 using Byrons 20% gen 2 nitro fuel stock tires And gearing should I go up to 25% fuel any advice would be great

 

[Rooky]

I run Byrons 20 in mine, it works well. Some other folks get 20 and 30 and mix them to get 25. I've never done it myself, but I've been told the power and tuning difference is noticeable. But the 20 works fine for me.