ORIGINAL: Edfltchr
Ok guys one more question both motors are 2.5R's in a Jjato and Maxx ,ran absolutely flawlessly on Top Fuel 33%. Just got my order from Tower and it seems I ordered 20%,Now the motors run like crap. My question is does higher nitro content help a worn motor run better?
If all you did was fill up the tank and go run the engine on 20% without retuning the engine, then yes, it will not run as well as it did with 33%
You must dial in the engine on the new fuel. You will probably have to remove the shim and then tune them in. They will probably both need to be leaned out to run the 20%.
Higher nitro does not necessarily make a worn engine run better.