I just installed a Hypertech Thermomaster chip, 160 thermostat and a K & N filter on my 90 coupe L98 engine. Better acceleration still runs a bit hot but the important thing is I am getting a 24 code. Is this serious? The Haynes manual say it could be the ESS-ELECTRONIC SPEED SENSOR, or the TPS-THROTTLE SPEED SENSOR. My question is, does the new chip create new tuning setting that would create this problem? And should I be changing the voltage on the TPS. My digital dash is now more intermitant than before and every once in a while will now freeze up and read out 0 mph when it sure looks like I am cruising down the road.