Hey I'm new to diesels and I just bought a 1997 7.3 supercab long bed heavy duty diesel. Right now I only have a K&N intake in it. I'm thinking about the mbrp 3" down pipe to 4" exhaust single exit with the 5" tip. And I am also hearing that the tony wildman chip is very well designed. Ok, now to the question...How do I get my truck to pour out the smoke??? The only time it smokes is when I cold start it.