Just had the neutral switch and high pressure switch replaced. Noticed today on my way home when you accelerate hard you get brown exhaust smoke,is this something I need to worry about?

Negative captain! Diesels will smoke and it is normal. Stock engines smoke much less and it takes hard acceleration to make it smoke... on the other hand, if you have a big tuner and crank it up, the ol' girl will smoke like a chimney:ro) Tuners will give you a lot of BLACK smoke!!

Dan