99 superduty on 22.5
i have a few questions about my truck. first- when i go wot the rpms get close to the redline. will this cause the service engine light to come on or is there something else. second-when i bought the truck it had a superchips and an edge juice already installed. but the guy took out the edge pyro and put in an analog gauge. will this cause the edge to not perform the best. and finally-when i stomp on the throttle the egt's almost instantly climb to 11-1200. what would be a cheap and easy way to lower the egt's. thanks in advance.