hi this is my first post and i am about to buy an exhaust system. i was thinking the magna flow 1 3/4 with cats, but i was wondering what the air pump was, and if i needed it. i have a 93L with a powerdyne bd10. i have a bassani cat back, but i would be taking that off for your full system. i live in CA and was wondering if with cats the truck would still pass smog? thanks for all the help, i cant wait to let my truck breath freely.
Roger
Roger