been looking at getting a four pill amp for my stryker 490..midnight special 500 or davemade 400 both amps have the same pills in them (2879's)..the midnight special is rated at 500 but it seems the pep input is to low for my 490..the davemade is rated at 800 + and will handle my stryker output.. what is the difference in these two amps as far as max input ratings and the difference between max output power on both amps..will not be volting the amp will be running on stock mack alternator with 3 batteries.. any info on ECU interfernce would also be nice..have been told that to much rf could fry the computer on the the truck..is this true or false