Care to take a look at these? truck seems to go rich lean and load up at steady throttle. wot runs decent.

Thank you,
Lucas

Thank you. Just got tuner pro figured out.

Lucas

Thank you for the fast reply! I solved the issue mainly today...was me deleting the EGR valve for no reason :mad1: i guess it being a 1 ton the egr is a ported valve and plays a big roll in the...

ECU # is -1227747

How would i go about finding out the chip number? It is a Factory chip as far as i know...

thanks, Lucas

I have a 1993 k3500 454 NV4500... The engine is a semi fresh rebuild(50K miles) with a small cam. I have replaced the following some parts multiple times... The truck has a stumbling rough idle....