well, i have a temp guage. But its an onboard temp made from traxxas. And that heat shield came off my pressure hose. It was laying on the header and fried it all up. So the motor isn't getting hot enough to burn through that. I would be really scared if that was to happen. My temp are usually really high. But i think the temp guage is way off. It usually read like 320-360, but when i go to lean it some more, it keep gaining in power. I am pretty sure i am far from the best performance, but the temps are Reading crazy. And now that this huge black spot on my piston has arrived. I'm not sure what to do... I have two threads up, one on here and one on traxxa's web site. And one person form both said it looks to lean, then the other two say it looks to rich. Not sure what to think yet.