I just installed a new PHP Hydra chip and am having a problem. I have a new PCM along with this new chip. On all of the programs sometimes the throttle response is dead on and at other times it's lethargic. Sometimes the SES light comes on and the engine will go into a limp mode. Other times it runs like a scalded cat. There are times when I let off the throttle the engine will lope several times and then just die other times it will idle just fine just a little higher than normal. It seams the 2 dialer driver modes are the worst. Has anyone else had these symptoms or suggestions on how to remedy the problem. Yes, I did download the suggested tunes according to the code of my new PCM.